Two-Sided Agency Architecture · Zero Client Guest Fees

Project Management Software with a Built-In Client Portal That Clients Actually Love

Traditional project management tools like ClickUp, Asana, and Monday were built for internal software teams, not client work. Inviting clients as guests leaks internal chatter, costs extra per seat, and confuses stakeholders. Stackon gives your agency a private internal cockpit on the inside and a clean, white-label client room on the outside - with built-in visual canvas proofing, 1-click client invitation links, and retainer tracking.

Unlimited Free Client SeatsNo Credit Card RequiredSetup Under 2 Minutes
stackon.co · two_sided_workspace_view.tsx
Strict Multi-Tenant Isolation
Internal Agency Cockpit
Team & Contractors Only
Q3 Brand Refresh & Pitch Deck v2
Assignee: Marcus K. (Senior Brand Designer)
In Review
Visibility: Internal Team Only
Assignee Role: Contractor Specialist
Private Note: Marcus completed first design pass. Deliverable draft stays hidden until internal creative director sign-off.
✓ Full Sprint Kanban✓ Scoped Contractor Tasks✓ Private Internal Notes
Client Review Room
portal.youragency.com
Q3 Brand Refresh & Pitch Deck v2
Deliverable ready for stakeholder feedback
Sign-Off Required
Canvas Pin Proofing Active3 annotations resolved
Click anywhere on the design canvas to leave pinned feedback or click "Approve Deliverable" to unlock final vector exports.
Retainer Status:16.5 / 20.0 Hours Remaining
✓ 100% White-Label✓ 1-Click Invitation Link✓ Visual Pin Annotations
The Agency Franken-Stack Cost Calculator

Calculate Your Real Tool Burn Before Switching

Compare what you currently pay across fragmented software subscriptions versus Stackon’s unified project management and client portal platform.

5 seats
1 solo5 studio10 boutique25 agency
12 clients (Unlimited on Stackon)
1 client15 clients30 clients50+ clients
Tools In Your Current Workflow:
The Fragmented Stack
$313
per month ($3,756/year)
Internal PM (ClickUp/Asana):$60/mo
Guest seat charges:$35/mo
Visual Proofing:$75/mo
Slack Pro chat:$44/mo
Client Portal tool:$99/mo
Unified Platform
Stackon Flat Plan
$49
per month ($588/year)
Tier:Studio Plan (5 seats included)
Client accounts:100% Free & Unlimited
Visual proofing:Included Native
Slack-grade messaging:Included Native
Retainer ledger & Stripe:Included Native
Net Profit Returned
$3,168
saved every single year

Money returned directly to your agency bank account instead of paying 4 separate software vendors for fragmented tools.

Switch and Keep the Savings
The Core Structural Problem

Why Inviting Clients Into ClickUp, Asana, or Notion Backfires

General-purpose productivity tools were engineered for internal teams sitting in the same office. Trying to stretch them into client-facing portals introduces four critical failure modes that damage agency margins and client trust.

01

The Accidental Permission Breach

In ClickUp or Asana, permission settings are notoriously complex. One junior project manager forgets to check a nested toggle, and suddenly your client sees contractor notes, internal deliberations, or unvarnished team messages like "client rejected this revision for the third time without reading the brief." Creating separate "client shadow boards" forces your project managers to manually copy and paste tasks between two different systems all day long.

The Stackon Fix:Database-level separation. Internal notes, contractor assignments, and private tasks cannot leak to client views under any circumstance.
02

The Guest License Shakedown

SaaS project management tools lure agencies in with cheap per-user pricing, then charge penalizing fees the moment you invite external client stakeholders. ClickUp limits free guest permissions to 5 guests per paid seat before forcing paid upgrades. Asana and Monday push agencies into expensive enterprise tiers costing $24 to $30 per seat per month. If you service 20 clients with 2 stakeholders each, software seat taxes eat thousands of dollars in profit.

The Stackon Fix:Every Stackon plan includes 100% free and unlimited client accounts. Invite 10 clients or 500 clients without paying a single cent extra.
03

The Fragile Notion Database Disaster

Agencies love Notion because it feels flexible, but client-facing Notion portals are extraordinarily fragile. Clients accidentally drag blocks into the wrong column, delete database properties, unlink relational rollups, or get lost in nested page hierarchies. Furthermore, Notion portals lack white-labeling unless you buy third-party wrapper tools like Super or Potion ($20-$50/mo), and they have zero built-in invoice collection or proofing.

The Stackon Fix:A purpose-built client portal interface that clients cannot accidentally break or reconfigure, backed by full custom domain white-labeling.
04

The Disconnected Review & Revision Loop

ClickUp and Asana are task trackers, not creative review suites. When your designer finishes a 16-page brand guide or website prototype, you must export files, upload them to MarkUp.io or Frame.io, paste links into emails, and chase clients across Slack. Client feedback arrives scattered across three tools. When scope disputes arise, there is no centralized audit trail proving which version the client approved or what requested changes were out of scope.

The Stackon Fix:Point-and-click visual pin proofing directly inside the deliverable task, complete with version comparison and legal sign-off audit logs.
Under the Hood

The Two-Sided Workspace Architecture Explained

Stackon eliminates the need to build duplicate boards or worry about permission leaks. Here is how our two-sided engine separates internal agency operations from the external client experience.

Side 1: The Internal Agency Cockpit

Where your team, project managers, and contractors execute work

  • Sprint & Kanban Task Boards: Assign tasks to team members or external contractors with due dates and priority tags.
  • Private Margin & Cost Tracking: Record contractor hourly pay rates ($40/hr) alongside client billing rates ($150/hr) with automatic gross margin calculation.
  • Internal Team Checklists & Draft Notes: Keep messy technical implementation notes, internal Figma links, and candid feedback completely shielded from client eyes.

Side 2: The Isolated Client Room

What your client sees when they open their white-label portal

  • Curated Milestone Deliverables: Clients see high-level project milestones, completed deliverables, and active request statuses without internal clutter.
  • 1-Click Client Invitation Links: Clients access their dedicated review room instantly via secure invitation links. Zero login friction or complex enterprise user setup.
  • Stripe Invoicing & Payment History: Clients view their paid receipts, outstanding invoices, and active retainer balances directly beside their project deliverables.
The 1-Click Visibility Toggle

Publish to Client With a Single Click

Every asset, task, and discussion thread in Stackon defaults to internal. When your creative director signs off on a deliverable, you click one button: "Make Client Visible".

Deliverable v2: Final Figma Vectors
Client Visible
Internal Subtask: Export WebP & SVG
Internal Only
Contractor Log: 4.5 hrs @ $45/hr
Internal Only

No duplicate project boards. No syncing Zapier webhooks. One unified database record with strict role-based visibility.

Replace MarkUp.io and Frame.io

Point-and-Click Visual Canvas Proofing Built Directly In

Eliminate vague client emails saying "change the headline on the mockup." Clients click directly on high-resolution design deliverables to drop numbered pins with targeted comments.

Pixel-Accurate Pin Annotations

Clients point, click, and leave feedback with exact canvas coordinates on PNG, JPG, WebP, and SVG files. Every pin is numbered sequentially and attached directly to the creative deliverable task.

Deliverable Asset Versioning

Maintain an organized revision history for all project assets, brand guidelines, and documents with version numbers, status chips, and direct client downloads.

Timestamped Sign-Off Logs

When a client hits "Approve Deliverable," Stackon locks the version and records an immutable audit log with client name, timestamp, and IP address to protect your agency against retrospective scope disputes.

Stop Unbilled Work

Native Retainer Accounting & Pre-Work Overage Alerts

Traditional project management platforms have zero concept of retainer balances or billable hours. Stackon links every task directly to your client’s retainer ledger.

01. Live Balance Burn

Real-Time Hours Tracking

As your team logs time against deliverables, the client retainer balance decrements automatically. Both your agency and the client see real-time remaining hours.

02. Automated Rollovers

Configurable Rollover Caps

Define whether unused hours expire at the end of the billing month or roll over into the next cycle (with configurable maximum rollover caps, e.g., max 10 hours).

03. Overage Pre-Approvals

Automatic Stripe Invoicing

When a client submits a request that exceeds their active retainer, Stackon alerts you to request pre-approval for the overage and bills it automatically at your set hourly rate.

Feature Comparison Matrix

Stackon vs. ClickUp vs. Asana vs. Notion

An objective breakdown of how Stackon stacks up against legacy project management tools for client-facing agency operations.

Client Access & Permission Architecture

CapabilityStackonClickUpAsanaNotion
Two-Sided Workspace (Internal vs Client View)
Stackon keeps internal team chatter, contractor costs, and unready drafts completely hidden from clients by default.
Native two-sided architecture with 1-click visibility togglesSingle workspace; requires complex guest permission hierarchiesSingle workspace; clients see all tasks in shared projectsFragile page permissions; easy for clients to view restricted blocks
Client Account Seat Pricing
You never pay extra software penalties when onboarding new client stakeholders or client review teams.
100% Free & Unlimited client accounts on all plans5 free guests per seat; additional guests require paid seatsLimited guest seats on starter plans; expensive tier upgradesGuest limits based on workspace tier ($10-$15/member)
Client Authentication & Portal Onboarding
Clients join via 1-click invitation links without complex configuration, landing directly in their dedicated review room.
Secure 1-click invitation links with instant portal onboardingMandatory email and password account creation with team invitesMandatory password registration and team organization inviteRequires Notion account or Google workspace sign-in
Granular Visibility Control per Task & Comment
Your designers and developers can discuss messy revisions and contractor notes right inside the task without clients ever seeing it.
One-click toggle: Internal Team Only vs Client VisibleComplex nested permission matrices per folder, list, and taskPublic vs Private to members only; no field-level hidingPage-level permissions only; cannot hide single database properties reliably
Custom Domain & 100% White-Label Branding
Deliver an experience that looks entirely like custom software built by your agency.
Included (portal.youragency.com with zero platform badges)Enterprise tier only ($24+/seat with custom enterprise contract)Not supported; displays Asana branding on all screensRequires third-party wrapper tools like Super or Potion ($20-$50/mo)

Creative Proofing & Deliverable Review

CapabilityStackonClickUpAsanaNotion
Built-in Visual Canvas Proofing
Clients click directly on design deliverables to leave clear feedback with exact pixel coordinates, eliminating vague emails.
Native: Drop numbered pins on PNGs, JPGs, WebP, SVG mockupsBasic image comments only; clunky asset viewerBasic proofing on Enterprise plan onlyNot supported; requires downloading files or external tools
Deliverable File & Version Management
Review design mockups on canvas and manage all creative asset versions directly inside the client portal without extra software.
Interactive canvas proofing for designs + full version history for all asset typesRequires external tool like MarkUp.io or Frame.io ($15/seat)Basic file attachment list onlyNot supported
Version Comparison Slider (v1 vs v2)
Show clients exactly what changed between revision rounds so they cannot claim revisions were missed.
Side-by-side visual difference comparison sliderManual file history download list onlyManual version attachments onlyPage revision history (text only; no visual asset diff)
Timestamped Client Approval Audit Trail
When clients approve a deliverable, Stackon locks the version and logs an immutable audit trail to protect you from scope disputes.
Legal sign-off record with client name, timestamp, and version IDStatus change only; no formal legal audit trailApproval task type (no asset version signature lock)Manual checkbox (easily unchecked by anyone)

Billing, Retainers & Financial Protection

CapabilityStackonClickUpAsanaNotion
Hour-Based Retainer Burn Tracking
See exactly how many retainer hours remain in a client cycle directly beside their project deliverables.
Native ledger: tracked hours, burn rate, and real-time balanceRequires third-party integration (Harvest/Toggl) or custom formulasRequires third-party time tracking add-onsRequires complex custom database relations and formula upkeep
Pre-Work Overage Alerts & Caps
Prevent unbilled scope creep before your team opens design or code files.
Automated warnings when requests exceed remaining retainer hoursNot supported; tasks simply accumulate time unmonitoredNot supportedNot supported
Integrated Stripe Invoicing & Payments
Clients can review their deliverables and pay their invoices inside the exact same portal.
Native: Invoices, one-click card checkout, and recurring billingNot supported; requires external QuickBooks or Stripe setupNot supportedNot supported

Communication & Team Operations

CapabilityStackonClickUpAsanaNotion
Real-Time Team & Client Messaging Channels
Keep internal discussions fast and organized while giving clients a dedicated channel for quick questions.
Slack-grade messenger with private channels & client roomsThreaded task comments and basic chat view (often clunky)Task comments and project messages (not real-time chat)Inline page comments only
Private Contractor Assignment & Isolation
Contractors see only their assigned deliverable tasks and creative briefs, keeping internal team chats, client billing, and settings completely private.
Built-in: Assign contractors with scoped task-only accessRequires custom guest role permissions and complex folder matricesRequires Enterprise permissions to isolate projectsRequires separate databases to prevent contractor data leaks
Pricing Economics for 5-Person Agency
Eliminate four separate software subscriptions and save over $1,500 every single year.
$49 / month flat (5 team seats + unlimited clients)$60/mo (ClickUp) + $75/mo (MarkUp.io) + $44/mo (Slack) = $179/mo$67.45/mo (Asana) + $75/mo (MarkUp.io) + $44/mo (Slack) = $186/mo$50/mo (Notion) + $75/mo (Proofing) + $29/mo (Super) = $154/mo
Field Tested

How Stackon Resolves 3 Costly Agency Crises

Real problems faced by marketing agencies, design studios, and dev shops when using generic task management software.

Crisis 1: The Password Abandonment

The Client Who Refused to Use the Portal

The Old Way: An 8-person web studio set up ClickUp guest accounts for a non-technical corporate client. The client forgot their password after day two, abandoned the platform, and began sending revision requests via 14 separate WhatsApp and email threads. Deliverable status descended into chaos.

The Stackon Resolution: The studio switched to Stackon’s 1-click invitation links. When a new prototype was ready, the corporate executive accessed the deliverable directly from their notification link into the review room without multi-step workspace onboarding. 100% portal compliance restored.

Crisis 2: The $3,200 Scope Creep

The Client Who Asked for "One Quick Tweak"

The Old Way: A branding agency managed a 30-hour monthly retainer using Asana tasks and Harvest time tracking. By month-end, the team had executed 51 hours of work - burning 21 unbilled hours ($3,150) because Asana lacked automated balance alerts.

The Stackon Resolution: Stackon’s retainer ledger flagged the overage on the 24th when the client submitted an out-of-scope brand deck. The agency sent a 1-click overage deposit via Stripe before touching Figma, capturing all 21 extra hours as paid revenue.

Crisis 3: The Revision Dispute

The "We Never Approved That" Dispute

The Old Way: A custom development shop delivered an e-commerce redesign. After launch, the client claimed the mobile checkout layout was never approved and demanded free re-development work, citing ambiguous comments left across Slack.

The Stackon Resolution: Stackon’s stage-gated approval system stored an immutable audit record: "Approved by sarah@client.com on Oct 14 at 16:42 UTC with IP 74.125.21.19 on Version 3." The dispute dissolved in seconds.

Is Stackon Right for Your Agency?

We believe in total transparency. Here is who should switch to Stackon today, and who should stay on their current tools.

Stackon is Built For:
  • Creative Studios & Design Agencies: Needing built-in PDF and image visual proofing without paying for MarkUp.io.
  • Retainer-Based Marketing Agencies: Tracking monthly hourly allowances, rollovers, and billable overages directly on deliverables.
  • Productized Service Studios: Delivering recurring design, copy, or development services with stage-gated client approvals.
  • Founders Tired of the Franken-Stack: Wanting to cut $1,500-$4,000/yr in redundant SaaS fees across ClickUp, Slack, Frame.io, and client portals.
You Should Stay on ClickUp/Jira If:
  • You Build Internal Enterprise Software: If your team works strictly on internal IT or SaaS products with zero external clients, Jira or ClickUp is a better fit.
  • You Need Complex Gantt Dependencies Across 100 Engineers: If you are managing waterfall engineering pipelines with dozens of sub-dependencies, traditional PM tools excel.
  • You Never Deliver Assets for External Review: If you never send mockups, PDFs, pitch decks, or copy docs for external client sign-off.
Frequently Asked Questions

Everything You Need to Know About Switching

Direct answers to common questions about data isolation, client permissions, and billing.

Q:Why should an agency choose project management software with a built-in client portal instead of ClickUp or Asana?

ClickUp, Asana, and Monday are designed primarily for internal company productivity, not external client collaboration. When you invite clients into generic project management platforms as guests, several operational problems emerge immediately: (1) Permission errors frequently expose internal subtasks, contractor notes, or candid team feedback; (2) Clients become overwhelmed by complex kanban boards, custom fields, and notifications they do not understand; (3) You still have to pay for separate tools like MarkUp.io for visual proofing, Slack for team communication, and Stripe/PandaDoc for billing. Stackon solves this with a native two-sided architecture: your team gets a full-featured internal cockpit to manage sprints and deliverables, while your client logs into a clean, custom-branded room showing only approved deliverables, revision requests, and invoices.

Q:How does Stackon prevent clients from seeing private internal team notes and contractor assignments?

Stackon enforces separation at the database and API level through a two-sided workspace model. Every task, subtask, comment, and attachment possesses an explicit visibility state. Internal comments, team discussions, private contractor assignments, and unreviewed draft files are marked "Internal Only" by default. When your team is ready to share work, they flip a single toggle to make the deliverable "Client Visible" or publish it to the client milestone. Even if a client inspects the browser network requests, the API never returns internal data to client tokens.

Q:Do my clients have to pay for user seats or go through complex onboarding?

No. All client accounts are 100% free and unlimited on every Stackon plan, including the $19/mo Solo tier and $49/mo Studio tier. Furthermore, clients never have to go through a frustrating registration process. Stackon generates secure 1-click invitation links. When you assign a deliverable for client review or send an invoice, the client receives an email link that drops them straight into their dedicated review room.

Q:Can clients annotate and leave visual comments on design deliverables and assets?

Yes. Visual canvas proofing is built directly into Stackon. Clients do not need to download third-party software or open files in external tools. When viewing design deliverables (PNG, JPG, WebP, SVG mockups), clients simply click anywhere on the asset to place a numbered pin and type their feedback. The pin captures exact pixel coordinates. Your designers see the exact pins on their internal task view, and clients can review revisions using a side-by-side visual difference slider before providing legal timestamped sign-off. Non-image assets and documentation remain organized with version history and direct downloads.

Q:How does the retainer ledger feature protect agencies from unbilled scope creep?

Most project management tools have no native connection between task completion and retainer billing contracts. Stackon bridges this gap with an automated retainer ledger. You can establish monthly hourly allowances (for example, 25 hours per month at $150/hour) with custom rollover caps. As your team logs hours against project tasks, the balance burns down in real time. If a client submits a new request on the 26th of the month that requires 8 hours, but only has 3 hours remaining in their retainer pool, Stackon displays a pre-work overage alert. You can request pre-approval for the 5-hour overage and bill it automatically via Stripe before spending unbilled hours.

Q:Can I run the client portal entirely under my agency’s custom domain?

Yes. You can map any custom domain or subdomain - such as portal.youragency.com or clients.yourstudio.design - directly to your Stackon portal with automatic SSL provisioning. Every client-facing interface, email notification, invoice, and deliverable review link reflects your agency logo, favicon, accent colors, and brand identity, with zero "Powered by" badges on paid plans.

Q:How does Stackon replace Slack for client and team communication?

Stackon includes a native real-time messaging engine built specifically for agency workflows. You can create private internal channels for your team and contractors, as well as dedicated client rooms for each project. Because messaging lives inside the same platform as your tasks and deliverables, you can turn any client message into an actionable task with one click, eliminating the constant copy-pasting between Slack threads and project boards.

Q:How long does it take to migrate active agency projects from ClickUp, Asana, or Notion?

Most agencies complete their transition in less than 30 minutes. You can import client contacts and project structures via standard CSV files, connect your Stripe account in two clicks, upload your agency brand assets, and configure your custom domain. Because clients access their portal via secure invitation links, you do not have to coordinate complex enterprise user provisioning across your client base - they instantly access their new workspace on their next deliverable review.

Upgrade Your Agency Operating System Today

Give your team a focused internal cockpit and give clients a white-label portal they will actually use. Set up your custom workspace in less than 2 minutes.

Full access to all features · Unlimited free client seats · No credit card required