App and website maintenance retainers in the US in 2026 typically run $1,500 to $15,000 per month. Most product teams on a standard Next.js or React Native stack pay $2K-$6K/mo for ongoing support.
The floor is a basic dependency update and uptime monitoring retainer for a simple site. The ceiling is a multi-platform app with continuous OS updates (iOS/Android annual releases), security patches, performance monitoring, and proactive feature work. Most well-built apps fall in the $2.5K-$8K/mo range. The single biggest predictor of where a specific engagement lands is scope discipline, operators who lock the spec in the first two weeks save 20-40% of total project cost over the next three months. Operators who let scope expand mid-build pay the inverse penalty. Either way, the $2K to $15K range is descriptive, not prescriptive: it reflects what a competent US vendor charges in 2026 for the work as scoped, not what a finished engagement has to cost.
| Component | Low | High |
|---|---|---|
Dependency updates + security patches | $300 | $2K |
Uptime monitoring + incident response SLA | $300 | $2K |
iOS/Android OS compatibility updates Apple and Google ship breaking changes annually; mobile apps require OS-cycle updates. | $0 | $3K |
Performance monitoring + issue triage | $300 | $2K |
Minor bug fixes + small UI updates | $500 | $4K |
Analytics review + reporting | $100 | $1K |
Dependency updates + security patches
Uptime monitoring + incident response SLA
iOS/Android OS compatibility updates
Apple and Google ship breaking changes annually; mobile apps require OS-cycle updates.
Performance monitoring + issue triage
Minor bug fixes + small UI updates
Analytics review + reporting
Maintaining iOS + Android + web is 2-3× the cost of a single platform. Each platform has its own OS release cycle, store policies, and breaking changes.
Apps built on current frameworks (Next.js 15, Expo 51+) are cheaper to maintain than apps on two-year-old dependency trees. Technical debt is maintenance cost paid in advance.
A 4-hour response SLA costs 2-3× more than a 2-business-day SLA. For revenue-critical apps, the premium usually pays for itself in prevented outage cost.
Pure maintenance (keep-alive) is the low end. Maintenance retainers that include a monthly feature budget are the high end. Mixing the two is usually cost-efficient vs separate engagements.
Apps running on managed platforms (Vercel, Expo EAS) cost less to maintain than apps running on self-managed Kubernetes clusters or legacy VMs.
Inparlor maintenance retainers start at $2,000/mo. Most apps on our standard stack pay $2.5K-$6K/mo. We prefer to maintain apps we built; for inherited codebases we require a 2-week technical audit ($3K-$8K) before committing to a retainer. The premium over the floor of the market reflects scope we don't itemize, measurement infrastructure, post-launch stability, and a documented handoff that survives whoever happens to be on our team six months from now. Our proposals are itemized line-by-line so you can see what you're paying for; we'd rather lose the deal on transparent pricing than win it by hiding the math.
Custom quote
itemized proposal within 48 hours
Senior engineers on retainer, not on a ticket queue.
Full Maintenance breakdownDIY maintenance with Dependabot + Sentry Free + a single developer in-house is viable for teams with an engineer who can handle it as 20-30% of their time. The risk is incident response latency when that engineer is on PTO. The honest framing: cheaper vendors exist at every tier, Fiverr at the bottom, offshore agencies in the middle, established US-based mid-market shops at the top. The cost-quality curve is real but rarely linear. Going from a $5K vendor to a $15K vendor usually produces a meaningfully different outcome; going from $15K to $45K often produces a refinement, not a transformation. Where you sit on that curve depends on the cost of being wrong, not the budget you have available.
(Annual retainer) ÷ (cost of prevented incidents + cost of OS-cycle rewrite avoided)
$48K/yr retainer for a $2M ARR SaaS. One major unpatched vulnerability incident avoided (avg cost: $50K-$200K in remediation + reputational damage) = retainer paid back in a single avoidance. OS-cycle updates prevented at $15K-$40K/yr in reactive rebuild cost.
We'll send back an itemized proposal, scope, line items, timeline, and the team that would actually run the engagement. No discovery call to schedule a discovery call.
See the Maintenance serviceSenior engineers on retainer, not on a ticket queue. Scoped and quoted individually — itemized proposal within 48 hours.