Stop chasing clients across Figma comment threads, Loom videos, and WhatsApp messages. Stackon combines interactive canvas proofing, stage-gated milestone approvals, private developer task isolation, and post-launch maintenance retainers starting at $19/mo.
Web design agencies that attach post-launch maintenance retainers build predictable recurring cash flow. See how stage-gated delivery and retainer ledgers impact your annual agency revenue.
Revenue generated from initial milestone-based web design deliveries.
Predictable recurring maintenance cash flow from 18 retained clients.
Combined milestone billings and recurring post-launch maintenance contracts.
Generic project management tools were never designed for the visual, multi-stage realities of web design. Here are the four points of operational friction that eat agency profits.
You invite corporate clients into Figma for design review. Non-technical executives accidentally drag components, comment on archived draft frames, or get overwhelmed by zoom navigation. Feedback ends up fragmented across Loom videos and email messages.
The Stackon Solution:
Point-and-click canvas proofing directly inside the client portal. Clients view clear design mockups (PNG, JPG, WebP, SVG), drop numbered pins on exact coordinates, and compare revisions with an interactive diff slider without touching complex design files.
Two days before production launch, the client suddenly says: "We changed our minds on the homepage structure - can we rework the primary hero section?" Because wireframes were approved verbally over Slack without formal stage-gating, the agency is forced to rebuild production code for free.
The Stackon Solution:
Formal stage-gated milestone approvals. Phase 1 (Wireframes) requires formal recorded sign-off with client name, IP, and timestamp before Phase 2 (UI Visuals) unlocks. Earlier phases are locked, protecting agency scope from retrospective redesign requests.
Web development involves dozens of messy internal QA tasks: CSS media query adjustments, SSL cert installations, and contractor timesheets. Exposing this internal churn to clients on shared Trello or ClickUp boards creates anxiety and micromanagement.
The Stackon Solution:
Architectural workspace separation. Developers coordinate internally on private task lists, contractor hours, and technical checklists. Clients see only high-level milestone progress and polished deliverable review rooms.
After a new site goes live, clients email the agency founder asking for "quick copy updates," plugin troubleshooting, or new team headshots. Agencies do this work for free out of habit, losing thousands of dollars in billable retainer revenue every year.
The Stackon Solution:
Automated post-launch maintenance retainers. Stackon tracks monthly hour pools, enforces rollover caps, and prompts automated Stripe overage deposits when client requests exceed their monthly balance.
Stackon replaces your fragmented web design stack with four purpose-built delivery mechanisms.
Stop sending non-technical clients into Figma where they accidentally drag UI elements, get lost in artboards, or leave comments in the wrong canvas frames. Clients click directly on high-resolution PNG, JPG, WebP, and SVG mockups to drop numbered pin markers and feedback. A side-by-side diff slider verifies revisions before sign-off.
Web projects collapse when clients request wireframe layout shifts during final staging development. Stackon enforces formal stage-gating: Phase 1 Wireframes and Phase 2 UI Visuals require recorded client sign-offs with legal timestamp and IP audit trails before Phase 3 Staging Development begins.
Web development involves messy internal friction: junior developers fixing responsive CSS bugs, staging QA checklists, contractor timesheets, and DNS configurations. Stackon keeps all internal tasks and contractor assignments private, showing clients only polished milestone stages and review rooms.
Never fix broken plugins, update staging copies, or tweak website copy for free again. Convert completed web builds directly into recurring maintenance retainers. Stackon tracks monthly hour budgets, enforces rollover hour caps, and automatically invoices overages via Stripe.
Real operational setups implemented by web agencies and productized development shops.
The Crisis: A corporate client approved homepage wireframes in an informal Slack chat. Two days before launch, the client’s CMO rejected the layout, forcing the agency to absorb 32 unbilled developer hours ($4,200).
The Stackon Setup: Switched to stage-gated milestone approvals. Formal timestamped audit logs proved Phase 1 sign-off, converting the late redesign request into an approved $3,800 change-order invoice.
The Crisis: The agency paid $15/seat for MarkUp.io and $12/user for ClickUp, spending over $320/month across 12 seats just to collect client feedback on graphic mockups and track developer tasks.
The Stackon Setup: Consolidated onto the Stackon Agency plan ($79/mo flat for 20 seats). Visual canvas pin proofing and diff sliders replaced third-party tools, saving $2,890 annually.
The Crisis: The studio completed 3 web projects per month but had zero recurring revenue. Post-launch bug fixes and ad-hoc client requests were performed without billing.
The Stackon Setup: Created an automated $1,200/mo website maintenance retainer package. 12 completed clients enrolled, creating $14,400 in predictable monthly recurring cash flow.
An honest comparison between Stackon and generic portals across design review, staging management, and maintenance billing.
Point-and-Click Canvas Pin Annotations
Clients leave pinpoint notes on specific UI elements rather than vague emails.
Side-by-Side Version Diff Slider (v1 vs v2)
Proves requested design revisions were executed, cutting revision loops by half.
Formal Milestone Approval Audit Trail
Eliminates retrospective "we never authorized this layout" disputes on launch week.
Stage-Gated Multi-Phase Delivery
Locks earlier design phases before expensive engineering work begins.
Internal Developer Tasks Hidden from Clients
Keeps CSS bug lists and developer notes hidden from client view.
Real-Time Workspace Messenger with Channels & DMs
Replaces external Slack fees while keeping project discussions organized.
Post-Launch Retainer Hours Ledger
Turns one-off web builds into compounding monthly recurring revenue.
Retainer Rollover Rules with Capped Balances
Protects agency capacity from sudden unmanageable hour claims.
Agency Seat Pricing (5 Creators + Unlimited Clients)
Keeps software overhead low while offering enterprise-grade client portals.
Direct answers to common questions about visual canvas proofing, milestone stage-gating, and retainer management.
Generic client portals (like Copilot, ManyRequests, Basecamp, or ClickUp) treat web design projects like simple text tickets or file attachments. But web design delivery is deeply visual, iterative, and multi-phased. When an agency delivers high-fidelity website mockups, generic portals force clients to download raw images or jump into complex Figma files where non-technical stakeholders get lost. Furthermore, generic portals lack stage-gated milestone approvals and do not provide retainer ledgers for post-launch website maintenance. Stackon provides a purpose-built environment with interactive canvas proofing, version comparison sliders, stage-gated milestones, and automated retainer ledgers.
MarkUp.io and Frame.io charge $15 per seat per month just for visual feedback. Stackon embeds visual canvas proofing natively inside the client portal for design assets (PNG, JPG, WebP, SVG). Clients click directly on any coordinate of a high-resolution mockup to leave a numbered pin and feedback note. When designers upload revision v2, clients use an interactive side-by-side diff slider to verify changes in real time, saving a 5-person agency over $900/year in redundant software costs.
The most dangerous scope creep in web design occurs when a client approves wireframes casually over Slack, but demands major layout restructuring during the final staging build in Webflow or WordPress. Stackon eliminates this vulnerability through stage-gated milestones. You can structure projects into discrete phases (e.g., Phase 1: Information Architecture; Phase 2: High-Fi UI Concepts; Phase 3: Staging Development; Phase 4: Production Launch). Clients must formally click "Approve Deliverable" with a recorded timestamp and IP audit log before subsequent production phases unlock.
Yes. Stackon operates as a two-sided workspace. Your internal developers, freelancers, and project managers have private task lists, contractor role assignments, and internal comments. You decide which tasks are visible to clients using a simple visibility toggle. Your team can track 45 responsive breakpoint bugs or DNS staging issues internally without ever causing panic or micromanagement on the client dashboard.
Most web design agencies leave thousands of dollars in high-margin recurring revenue on the table by doing free post-launch tweaks. Stackon connects initial web design deliverables directly to an automated retainer ledger. You can offer clients a monthly maintenance package (e.g., $1,200/mo for 10 hours of updates and technical monitoring). Stackon tracks time against maintenance tasks, displays live balance burn to the client, enforces rollover hour caps, and automatically bills overages at your set hourly rate via Stripe.
No. Stackon uses 1-click invitation onboarding links. Clients receive a secure invitation link that takes them directly to their branded portal. When a new website deliverable is ready for inspection, notification emails link straight to the specific review room, guaranteeing fast turnaround and zero login friction.
Yes. On all Stackon paid plans ($19/mo Solo, $49/mo Studio, $79/mo Agency), you can connect your own custom domain or subdomain (e.g., portal.yourstudio.design). All client dashboards, review rooms, email notifications, and invoices are 100% white-labeled with your studio logo, favicon, and brand colors, with zero external platform branding.
Stackon offers predictable flat-rate tiers designed for agency margins: Solo is $19/mo (1 seat), Studio is $49/mo (includes 5 team seats), and Agency is $79/mo (includes 20 team seats). Extra seats are just $7/mo each. All plans include unlimited free client accounts, so you never pay extra fees when onboarding corporate clients.
Launch your white-label web studio portal in less than 2 minutes. Connect your Stripe account, invite your design team, and test visual canvas proofing on active client mockups without entering a credit card.
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