Mobile App Maintenance · London
Mobile App Maintenance in London
Ongoing upkeep for London businesses' existing apps — the work that keeps something built two years ago from quietly breaking. Mobile apps decay faster than web software because the ground moves underneath them: annual OS releases, changing store requirements, and SDK deprecations that eventually become removals.
Why this comes up
The problem
The app was delivered, the developer moved on, and nothing has been touched since. Reviews mention crashes on newer phones and nobody is confident it could even be rebuilt today.
What you get
What we deliver
- A build restored and reproducible, which is often the first real problem to solve
- Dependencies and SDKs updated, prioritising the ones with security implications
- Compatibility with current OS versions and current devices
- Store requirement changes handled before they block your next release
- Crash monitoring in place, so problems surface before reviews do
- A predictable release cadence rather than emergency fixes
Want this scoped for your business in London?
Thirty minutes, no charge, no sales script. You leave with a written summary of what mobile app maintenance would actually involve — whether or not you use us.
Working in London
London
London clients usually come to us because they want senior people actually on their project rather than a large agency's B team, and because Midlands rates buy considerably more delivery per pound.
Clients here are usually replacing an agency, and want senior people on the work at rates that are not Central London rates.
Sectors we work with in London
- Financial Services
- Professional Services
- Technology
- Media
- Hospitality
- Retail
What we work with
Technologies and platforms
- Swift
- Kotlin
- React Native
- Firebase
- Fastlane
Who we work with
Industries we serve
- Retail
- Healthcare
- Field services
- Hospitality
- Professional services
Why us
Why London businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in London
Looking for the full picture? See our Mobile App Maintenance services, everything we do in London or browse everything we do.
Mobile App Maintenance in London — common questions
- What does an unmaintained app cost us?
- It degrades quietly. Crashes rise as new devices appear, store policy changes eventually block updates, and unpatched SDKs become a security exposure. The cost arrives as a large remediation project rather than as a visible monthly line.
- Can you take over an app someone else built?
- Usually. The first task is getting a clean reproducible build — often harder than expected when signing credentials, environment details and undocumented steps left with the original developer. That handover work is worth budgeting for honestly.
- How often does it need attention?
- Realistically a few releases a year plus a response path for urgent issues. Both platforms release annually and store requirements change on their own schedule, so an app left for eighteen months has usually accumulated more than one blocking problem.
- Should we maintain or rebuild?
- Maintain if the app works and the codebase is coherent — rebuilding is expensive and reintroduces bugs someone already fixed. Rebuild when the framework is genuinely unsupported or the code has become slower to change than to replace.
- Do you work with businesses across Greater London?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout London, including London and the surrounding Greater London area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of London businesses do you usually work with?
- Clients here are usually replacing an agency, and want senior people on the work at rates that are not Central London rates. Beyond that we work across Financial Services, Professional Services, Technology, Media, Hospitality and Retail.
- Do you cover the areas around London?
- Yes — we work throughout London, including Reading, Milton Keynes, Cambridge, Brighton. London is an urban area of roughly 9,000,000+, and we take on work across the wider Greater London region rather than the city boundary alone.
Talk to us about Mobile App Maintenance in London
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise