Your app keeps evolving as your business does.
A dedicated mobile retainer for businesses scaling their app. New features, integration changes, OS-version updates, performance work — without re-procuring an agency every quarter.
Senior team · Direct comms · Cancel anytime
Why post-launch is where most apps die
Launching the app is the easy part. The expensive failures happen in the 6 months after launch:
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iOS or Android ships an OS update and your app starts crashing for everyone
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You're rolling out 3 new locations and the app needs per-store config the original build didn't anticipate
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Your POS or CRM vendor changes their API and the integration breaks silently
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A new competitor launches and you need a feature in the app store within weeks, not months
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The original agency stopped responding, and re-procuring takes longer than the work would
An app that doesn't evolve is an app that's quietly bleeding customers and revenue.
A senior team that already knows your codebase.
The team that built your app is the team that maintains it. No hand-off, no re-onboarding every six months, no 'we'll need to do discovery' before each engagement. Predictable monthly cost, direct communication, cancel anytime.
Same senior team
The engineers who built your app stay on the retainer. They already know your code, your integrations, and your operational quirks.
OS-version compatibility
Every iOS and Android release gets tested. We patch breakages before your customers find them.
Integration maintenance
POS, CRM, accounting, and payment APIs change. We monitor, patch, and harden.
New feature releases
Quarterly feature rollouts that match your business priorities — not the agency's roadmap.
Direct communication
No account managers. You message the engineers writing the code, and they respond.
Predictable monthly cost
Fixed monthly retainer, scaled to the support level you need. Cancel or pause anytime.
From alignment to ongoing delivery
Planning call
We learn your app, your operation, and what kind of ongoing support you need. Free, 30 minutes.
Onboarding
Source code review, integration audit, infrastructure handover. 1–2 weeks if we didn't build it; immediate if we did.
Retainer activation
Monthly retainer begins. You message the team directly through Slack or your preferred channel.
Ongoing delivery
Maintenance, integration repairs, and feature work shipped continuously. Monthly status review.
Quarterly adjustment
Scale up, down, or pause based on what's coming up in your business.
An app that keeps working — and keeps shipping.
Dedicated senior Flutter team
The same engineers month over month. They know your codebase, your integrations, and your operation.
OS-version compatibility
Every iOS and Android release tested. Patches shipped before your customers find the breakage.
Integration monitoring & repair
POS, CRM, accounting, and payment APIs change. We monitor for breakage and patch quickly.
Active feature development
Quarterly roadmap of new features tied to your business priorities — not the agency's.
Crash & performance monitoring
Crash reports, performance baselines, and error budgets reviewed weekly.
Flexible engagement
Scale up for feature pushes, scale down for steady-state. Cancel or pause anytime.
The team that built your app is the team that maintains it.
Same senior engineers month over month — no hand-offs, no re-onboarding
Predictable monthly cost — no hourly billing surprises
Direct communication — message the engineers, not an account manager
OS-version updates and integration changes handled before they break customers
You own everything — code, designs, infrastructure, all in your accounts
Cancel anytime with 30 days' notice — no lock-in
An ongoing partnership for businesses that can't afford an app that quietly stops working.
Predictable monthly cost. Cancel anytime.
Retainers scale with your support needs and feature velocity. From light maintenance (OS updates, minor fixes) to active feature roadmap, plus everything in between.
Starting from
- check_circle Senior Flutter team (the same team that built your app)
- check_circle OS-version compatibility patches
- check_circle Integration monitoring & repair
- check_circle Active feature development
- check_circle Direct communication — no account managers
- check_circle Cancel or pause anytime
Final monthly price depends on team allocation and feature velocity. Most clients land between $2,500 and $12,000/month.
Frequently Asked Questions
No. We take on retainers for apps built by other agencies, in-house teams, or freelancers — provided we can get our hands on the source and the codebase isn't actively on fire. (If it is, see App Stabilization.)
If we built the app, immediately. If another team built it, we typically need 1–2 weeks of onboarding to map the codebase, integrations, and infrastructure before we accept ongoing responsibility.
Yes. Retainers are month-to-month with 30 days' notice. No long-term contracts, no cancellation fees.
Yes. Most clients adjust the retainer level quarterly based on what's coming up. Light maintenance one quarter, active feature work the next, then back down.
Everything is yours. The source code, designs, infrastructure credentials, and documentation are all in your accounts under your name. If we walk away tomorrow, you have everything another team needs to take over.
Tell us about your app and your support needs.
We'll help you size the right retainer for your business — minimum support, active feature roadmap, or somewhere in between. No commitment. Takes less than 60 seconds.
Need ongoing support without re-procuring an agency every quarter?
Tell us about your app and where you need help. We'll put the right team on it — usually within days, not months.