Maintenance, updates and app takeovers
Apps need care after launch: new iOS and Android versions, store rules, bugs and new features. We keep yours healthy, or take over an app another team built.
Every year Apple and Google release new operating systems and tighten their store rules. An app nobody looks after starts to crash, falls behind or gets removed. A light maintenance plan prevents that and keeps improving the app in small, regular releases.
If your previous developer is no longer available, we can take the app over: we review the code, fix what's urgent, set up proper builds and releases, and then carry it forward.
Maintenance & app takeovers
What we deliver
- OS & SDK updatesReady for each new iOS and Android release.
- Store complianceTarget API levels, privacy labels and policy changes handled before deadlines.
- Bug fixing & monitoringCrash reporting and fixes prioritised by how many users they affect.
- Performance & securityFaster start-up, smaller downloads and up-to-date dependencies.
- Code review & takeoverAn honest audit of an existing app and a plan to stabilise it.
- New featuresImprovements in small, regular releases instead of risky big ones.
Work
Related work

UNTOLD
The companion app for UNTOLD: lineups, personal schedules, maps and live updates.
View project

Rhuna
Smart tickets, payments and Web3 tooling for modern events (rhuna.io).
View project
Extasy
An experiences and ticketing marketplace (extasy.ro): discover, book and pay for things to do.
View projectWhy durfu soft
Small team, long experience
18+ years of experience
Our team has built apps since 2008, the year the App Store opened, for brands on three continents. Since 2019, the studio has operated as DURFU SOFT S.R.L.
You talk to the builders
No account managers in between: the people you talk to are the people who design and build your app.
App, back-end and web together
One team for the whole product, so nothing gets lost between agencies.
Technologies
- Crash reporting
- CI/CD
- fastlane
- GitHub Actions
- Store compliance
- Dependency updates
Services
More we can do
Mobile app development
iPhone and Android apps, from first sketch to the stores and beyond.
Learn moreFlutter app development
One codebase for iOS, Android and the web, with native performance.
Learn moreNative iOS development
iPhone and iPad apps in Swift, from a team building for iOS since 2008.
Learn moreWebsites & web apps
Company sites, landing pages and web apps that load fast and get found.
Learn moreCommon questions
How much does an app cost?
It depends on what the app needs to do: the number of screens and features, whether it needs a back-end, payments or integrations, and how polished the design should be. After a short discovery call we send a clear estimate for a first version. Starting with a focused first version and growing it from real use is usually the best value.
How long does it take to build an app?
A focused first version can launch within weeks; larger platforms with back-ends and integrations take a few months. After discovery you get a timeline with milestones and working builds along the way, so you're never waiting in the dark.
Flutter or native: which should I choose?
For most apps, Flutter is the best value: one codebase for iPhone and Android, with native performance and one team to pay. Native Swift or Kotlin is better when an app leans heavily on the newest platform features or deep hardware access. We've done both since 2008 and recommend what fits your project.
Start a project
Have an app in mind?
Tell us what you want to build: a new app, a website, a back-end, or something in between. We'll help you shape it and ship it.