App Maintenance & Modernisation
SDK upgrades, performance tuning, accessibility, and OS-version compatibility for live apps.
· Reviewed by senior engineers
01 What it is
What this service is
App maintenance is the unglamorous discipline of keeping a shipped app alive as platforms change underneath it: new iOS and Android versions, new SDK requirements, new privacy rules (App Tracking Transparency, Privacy Manifest, Play Data Safety), new device classes (foldables, Vision Pro), and new accessibility standards (WCAG 2.2, EU Accessibility Act).
Modernisation is the bigger sibling — rewriting tired code (UIKit → SwiftUI, View System → Compose, JS bundle → Hermes), upgrading dependencies that have gone two majors behind, and rebuilding the CI/CD pipeline that everyone forgot how to operate.
02 What it's for
What it's for
You need this when the app is shipping crashes, when Apple or Google have sent you a Target SDK warning, when the original team has moved on, or when a new compliance deadline (EU Accessibility Act, Apple Privacy Manifest) is coming up.
We also see this engagement as a precursor to a major feature push — modernise the foundation first so the new feature work can ship cleanly.
03 How to use it
How to engage devinsta
We start with a 1–2 week audit covering code, dependencies, crash rates, performance, accessibility, and CI/CD. We deliver a written report ranked by impact and risk. Most clients then engage us for the remediation work in phases.
04 How to deploy
How we deploy it
Modernisation work ships in feature flags or in shadow builds where possible — so existing users aren't disrupted. We use phased rollouts (TestFlight, Play Internal → Closed Beta → Open Beta → 5% → 50% → 100%) and we measure crash rate, retention, and key performance metrics at every stage.
05 What we provide
What you get from us
- Code, dependency, and CI/CD audit
- Crash rate triage and remediation
- SDK and target-version upgrades
- Privacy Manifest / ATT / Play Data Safety compliance
- Accessibility audit (WCAG 2.2 AA, EU Accessibility Act)
- Performance and battery profiling
- Phased production rollout
- Optional retainer for ongoing maintenance
FAQ
Common questions
Our app crashes a lot. Can you fix it?
Usually yes — we triage by crash volume and severity in Crashlytics / Sentry, fix the highest-impact crashes first, and report a measurable improvement. Most apps see a 60–90% crash-rate reduction in the first sprint.
What about Apple's Privacy Manifest?
Required since 2024 — every SDK must declare its data collection and required-reason API usage. We audit your SDK estate, generate the Privacy Manifest, and ensure the app passes Apple's automated review.
Do you provide accessibility audits?
Yes — we audit against WCAG 2.2 AA, the EU Accessibility Act (effective June 2025), and Apple / Google's platform accessibility guidelines. We deliver a remediation plan ranked by impact and ship the fixes.