Zendo built a clean eCommerce storefront and live chat ticket system. But when your agency handles multi-phase delivery, design asset proofing, and hour-based retainer ledgers, a simple chat feed breaks down. Stackon unites white-label client portals, Kanban delivery boards, point-and-click canvas proofing, and automated retainer accounting starting at $19/mo flat.
Zendo charges per internal user seat on their Pro tier. Stackon provides predictable agency flat rates with generous seat bundles and unlimited free client accounts.
€19/seat/mo billing. Lacks visual canvas pin proofing and retainer rollover ledgers.
Studio plan ($49/mo) with 5 seats included + canvas proofing.
Software spend returned directly to agency net margins every single year.
Because Zendo focuses on live chat tickets and order forms without native visual proofing or deep retainer tracking, agencies end up purchasing auxiliary subscriptions. Compare the true monthly balance sheet.
Total Monthly Software Cost:
$343.75 / mo
$4,125 / year
Across 5 disconnected tools
Total Monthly Cost:
$49.00 / mo
Save $3,537 / year
Kept directly in agency profits
Zendo works well if you sell simple one-off service packages through an automated storefront. But when your agency handles multi-phase projects, design feedback rounds, and retainer hours, you hit these four operational ceilings.
Zendo packages client work as support tickets inside a live conversation feed. While that suffices for answering quick inquiries, it fails completely when executing a 6-week website redesign or brand system. Deliverables get buried under dozens of chat replies, milestone timelines are invisible, and subtasks cannot be tracked across team members.
How Stackon Solves This:
Stackon provides a structured two-sided workspace. Your internal team works across multi-column Kanban boards with task assignments, checklist subtasks, and milestone deadlines. Clients see an organized portal displaying real-time phase progress, approved deliverables, and active requests without confusing ticket clutter.
In Zendo, client review is limited to uploading files into the chat thread. When an agency delivers high-resolution visual designs, UI wireframes, or marketing graphics, clients are forced to download raw files and type vague text notes like "on the header, make the headline darker and adjust the padding."
How Stackon Solves This:
Stackon embeds an interactive canvas review room for design deliverables (PNG, JPG, WebP, SVG). Clients click directly on any coordinate to drop numbered pin markers and leave targeted comments. When revisions are uploaded, a side-by-side visual diff slider lets clients verify changes before giving formal approval.
Zendo supports recurring subscription checkout, but lacks an operational ledger to manage billable hours. If an agency sells a 20-hour monthly retainer, Zendo cannot track how many hours were consumed, how many remain, or whether unused hours roll over into the next cycle.
How Stackon Solves This:
Stackon includes an automated retainer ledger engine. Set monthly hour allowances, configure rollover caps (e.g., maximum 5 hours carried forward), and track burn rates against deliverable tasks. If a client request exceeds their available balance, Stackon alerts you to collect an overage deposit via Stripe before work begins.
Zendo’s Pro tier bills €19/user/month (roughly $21/seat/month). While that seems manageable for 2 people, the price compounds aggressively as you hire designers, developers, account managers, and contractors. A 10-person agency spends over $2,500/year just on portal seat licensing.
How Stackon Solves This:
Stackon protects agency gross margins with flat-rate tiers. Solo is $19/mo (1 seat), Studio is $49/mo (includes 5 seats), and Agency is $79/mo (includes 20 seats). Additional seats are just $7/mo. Unlimited client portals are included across every tier without seat penalties.
See how both platforms handle the actual delivery situations agency founders navigate every week.
In Zendo:
You upload 6 JPG screen mockups as attachments in the ticket chat. The client writes back: "On screen 3, the card is misaligned, and on screen 4, the font doesn’t look right." The designer spends an hour guessing which card and font the client meant, triggering another round of clarifying emails.
In Stackon:
The client opens the deliverable canvas in their portal. They click directly on the misaligned card and font element to drop numbered pins with targeted comments. The designer resolves the exact coordinates, uploads v2, and the client verifies the fix with the side-by-side diff slider.
In Zendo:
A client paying a $3,000/mo retainer asks how many hours were spent on ad creatives versus landing page updates. Because Zendo lacks an hour ledger, the agency owner must open Harvest, export time entries, compile a manual spreadsheet, and explain discrepancies over email.
In Stackon:
The client checks their portal dashboard anytime to view their live retainer ledger: starting pool, hours logged per deliverable task, burned capacity percentage, and remaining balance. Transparent data eliminates unbilled time and disputes automatically.
In Zendo:
Because conversation threads are client-facing, internal notes between project managers and freelance developers risk leaking. If a contractor mentions a bug fix or cost estimate in the wrong field, the client sees it, triggering panic and micromanagement.
In Stackon:
The two-sided workspace keeps internal operations isolated. Freelance contractors check off internal QA tasks and log time without exposing raw work to the client. Clients see only stage-gated milestones, finalized deliverables, and professional review rooms.
An objective, capability-by-capability comparison between Stackon and Zendo across core agency requirements.
Visual Kanban Delivery Boards & Subtasks
Zendo treats client engagements as support tickets inside a chat feed. Stackon provides full Kanban workflows, sprint milestones, and subtask dependencies for production delivery.
Internal vs. Client-Visible Task Separation
Keep internal contractor assignments, staging checklists, and QA notes completely private from paying clients while displaying polished milestone progress.
Milestone Stage-Gating & Deliverable Phases
Prevents scope creep on multi-stage projects (e.g. brand identities, website builds) by requiring formal client sign-off on early milestones before work proceeds.
Real-Time Workspace Messenger with Channels & DMs
Stackon includes a dedicated workspace communication hub for both internal team coordination and client discussion, eliminating external Slack fees.
Interactive Canvas Proofing (PNG, JPG, WebP, SVG)
Clients click directly on visual designs to drop numbered pins and notes. Eliminates ambiguous feedback like "change the button color in the second row."
Side-by-Side Version Diff Comparison Slider
Clients drag a slider across previous and updated revisions to verify that all requested edits were executed before signing off.
Formal Client Approval Audit Trail
Provides formal legal audit logs for milestone approvals, stopping retroactive "we never signed off on this design" disputes in their tracks.
Organized Deliverable Version Vault
Keeps final production assets, brand kits, and deliverables organized in one client vault rather than buried under hundreds of chat messages.
Hour-Based Retainer Ledgers & Live Burn Tracking
Track monthly retainer allowances (e.g., 20 hours/month) against deliverable tasks with automatic visibility into hours used versus hours remaining.
Monthly Hour Rollover Mechanics with Caps
Give clients fair rollover value on unused monthly retainer hours without letting balances accumulate indefinitely and creating sudden agency capacity debt.
Pre-Work Overage Alerts & Stripe Deposits
If a client submits a 6-hour request with only 2 hours left on their retainer ledger, Stackon flags a 4-hour deficit before creators start work.
Structured Request Intake Forms
Both platforms allow structured intake, but Stackon connects intake directly to Kanban tasks, retainer ledgers, and deliverable review rooms.
Solo Operator Plan (1 Seat)
Stackon includes full custom branding, custom domains, visual canvas proofing, and retainer ledgers on the $19/mo Solo tier without feature lockouts.
5-Person Agency / Studio Plan
Zendo penalizes growing agencies by billing €19/user/month. Stackon includes 5 full team seats in the $49/mo Studio base plan.
20-Person Agency Plan
Stackon includes 20 seats for $79/mo flat, with extra seats at just $7/mo. Zendo charges over 5x more for the same team size.
Client Portals & Client Guest Accounts
Invite as many client stakeholders, corporate reviewers, and guest contacts as you need without paying per client.
White-Label Custom Domain & Brand Removal
Run your portal under portal.youragency.com with zero external platform branding from day one.
Client Authentication & Review Room Access
Clients onboard via 1-click invitation links and enter review rooms directly from notification emails without multi-step workspace friction.
We believe in straightforward software guidance. Here is who should stay on Zendo and who should switch to Stackon.
You operate a transactional service storefront and prioritize chat ticketing.
You run an agency delivering iterative design, development, or marketing retainers.
Direct answers to the practical questions agency founders ask before migrating from Zendo to Stackon.
Zendo is fundamentally designed as an eCommerce storefront and live chat ticketing system for productized services. While that works for basic transaction-based order handling, agencies quickly encounter a major barrier when delivering iterative, multi-stage client work: Zendo lacks real Kanban project management boards, sprint workflows, and subtask dependencies. Furthermore, Zendo has no built-in visual canvas proofing (forcing agencies to buy MarkUp.io or Frame.io for $15/seat) and lacks hour-based retainer ledgers with rollover rules. Stackon combines true agency project management, point-and-click design proofing, Slack-grade messaging, and automated retainer ledgers starting at $19/mo flat.
In Zendo, every client request is treated as a conversation thread inside a ticket feed. When an agency delivers complex projects - such as a 6-week web design sprint, brand identity overhaul, or software development roadmap - a chat feed quickly descends into disorganization. Stackon provides a full two-sided agency cockpit: internal teams organize work on multi-phase Kanban boards, break projects into private subtasks, assign contractors, and manage milestone deadlines. Clients view a clean portal with clear milestone progress, stage-gated deliverable reviews, and active requests.
Yes. In Zendo, client review is limited to downloading attachments from chat messages and writing unstructured text feedback like "on the header graphic, make the logo smaller." Stackon includes an interactive canvas review room for design deliverables (PNG, JPG, WebP, SVG). Clients click directly on any coordinate to drop numbered feedback pins and comment threads. Designers view those exact coordinates, upload revisions, and provide an interactive side-by-side comparison slider for formal sign-off.
Zendo allows you to sell recurring subscriptions, but it has no ledger mechanism to track billable hours, monthly capacity burn, or unused hour rollovers. Stackon includes an automated retainer ledger engine: define monthly hour pools (e.g., 25 hours/mo at $150/hr), track time directly against deliverable tasks, and set rollover rules (e.g., up to 5 unused hours roll over into next month). If a client submits a request that exceeds remaining balance, Stackon flags the deficit before creators start work and generates an itemized Stripe overage invoice with one click.
Zendo charges €19/user/month (roughly $21/seat/month) on their Pro tier. For a boutique agency with 5 team members, Zendo costs over $100/month; for 15 team members, it costs over $315/month. Stackon uses predictable, agency-friendly flat rates: Solo is $19/mo (1 seat), Studio is $49/mo (5 team seats included), and Agency is $79/mo (20 team seats included). Any additional seats beyond 20 are just $7/mo per seat. All plans include unlimited free client accounts.
Yes. In Zendo, discussions happen primarily within the client ticket feed, creating a high risk of accidentally exposing internal friction or cost discussions. Stackon enforces strict architectural separation: internal team members have private task lists, contractor assignments, and internal comments with client visibility toggles. External clients see only polished review rooms, approved milestones, and invoices.
Yes. On all Stackon paid plans ($19/mo Solo, $49/mo Studio, $79/mo Agency), you can host your portal under your own custom domain or subdomain (e.g., portal.youragency.com) with automatic SSL. There is zero "Powered by" branding on client portals, invoices, review rooms, or transactional notification emails.
Migration takes under 15 minutes. You can import client lists via CSV, connect your Stripe account in two clicks, set up your service catalog packages, and upload your agency branding. Because Stackon uses 1-click invitation links, clients do not have to endure complicated workspace onboarding - they click their invitation link and land straight inside their new portal.
Launch your custom-branded portal in under 2 minutes. Connect your Stripe account, invite your team, and test visual canvas proofing on real client deliverables without entering a credit card.
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