I will audit fix and debug your mobile app or mvp with german precision


Top Rated
Informazioni su questo servizio
I will analyze, debug, and fix issues in your mobile app to ensure it runs smoothly, reliably, and as expected.
If your app is crashing, behaving incorrectly, or stuck due to bugs, I help you identify the root cause and fix the problem properly without introducing new issues or temporary workarounds.
I work in a structured and transparent way, focusing on stability, maintainability, and long-term quality rather than quick hacks.
What I can help you with:
- App crashes and runtime errors
- Broken features or unexpected behavior
- Build and deployment issues
- Performance and stability problems
- API or backend integration bugs
- UI or logic issues
- Code cleanup and bug isolation
Platforms & technologies:
- Flutter
- Android (Java / Kotlin)
- iOS (Swift)
This service is ideal for:
- Apps that crash or behave incorrectly
- MVPs that need stabilization
- Apps rejected by App Store or Play Store due to bugs
- Founders or teams who need a reliable fix
️ Important notes:
- This gig is for bug fixing and debugging only
- New features are not included
- Scope depends on issue complexity
- Source code access is required
Please contact me before ordering and briefly describe:
- The issue
- Platform (Flutter / Android / iOS)
Scopri di più su Jean App Dev
German Mobile App Development, Website Expert
Top Rated
- DaGermania
- Membro dagiu 2020
- Tempo di risposta medio1 ora
- Ultima consegna5 giorni
Lingue
Inglese, Tedesco
Il mio portfolio
FAQ
What kind of mobile apps do you work with?
I work with Flutter apps as well as native Android (Java/Kotlin) and iOS (Swift) applications.
Do you fix apps that you didn’t build yourself?
Yes. I regularly debug and fix apps developed by other developers or teams.
What types of issues can you fix?
I can fix crashes, runtime errors, broken features, performance issues, API or backend integration bugs, UI/logic problems, and build or deployment errors.
Do you add new features or functionality?
No. This gig focuses strictly on bug fixing and debugging. New features can be discussed as a separate project.
Do you need access to my source code?
Yes. Access to the source code (GitHub, GitLab, Bitbucket, or ZIP file) is required to properly analyze and fix the issue.
How do you ensure the quality of the app?
I follow best practices in Flutter App Development, including thorough testing, optimization for performance, and a focus on a user-friendly design to ensure your app meets the highest quality standards.
5 recensioni per questo servizio
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Valutazione dettagliata
- Livello di comunicazione del venditore
- Qualità della consegna
- Valore della consegna
Ordina per
Y yourcamsound

Germania
Collaborazione in corsoWie immer klasse und super Zusammenarbeit! Professionell und zuverlässig.
5000 USD-10.000 USD
Prezzo
7 settimane
Tempo
Utile?G 
goerkem00

Germania
Collaborazione in corsoTop, hat egal wie oft ich nach Revisionen gefragt habe alles erfüllt
400 USD-600 USD
Prezzo
3 settimane
Tempo
Utile?L lennart_buenker

Germania
Collaborazione in corsoJean's work is - as always - jsut great. He answers fast. He understands my needs. I started to work with Jean about 1 year ago. Since then he not only created exactly the APP I wanted, he also extended the APP whenever I needed it done. Apart from that he has supported me several times with some additional stuff like databases. 100% reccomondation here
400 USD-600 USD
Prezzo
3 giorni
Tempo
Utile?S senolsenocak525

Germania
Collaborazione in corsoSuper, jederzeit wieder.
1000 USD-2500 USD
Prezzo
13 giorni
Tempo
Utile?S schportling

Germania
Collaborazione in corsoEine tolle Arbeitsebene und noch immer eine fantastische Zusammenarbeit. Danke!
800 USD-1000 USD
Prezzo
1 giorno
Tempo
Utile?
5 recensioni per questo servizio
| (5) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Valutazione dettagliata
- Livello di comunicazione del venditore
- Qualità della consegna
- Valore della consegna
Ordina per
Y yourcamsound

Germania
Collaborazione in corsoWie immer klasse und super Zusammenarbeit! Professionell und zuverlässig.
5000 USD-10.000 USD
Prezzo
7 settimane
Tempo
Utile?G 
goerkem00

Germania
Collaborazione in corsoTop, hat egal wie oft ich nach Revisionen gefragt habe alles erfüllt
400 USD-600 USD
Prezzo
3 settimane
Tempo
Utile?L lennart_buenker

Germania
Collaborazione in corsoJean's work is - as always - jsut great. He answers fast. He understands my needs. I started to work with Jean about 1 year ago. Since then he not only created exactly the APP I wanted, he also extended the APP whenever I needed it done. Apart from that he has supported me several times with some additional stuff like databases. 100% reccomondation here
400 USD-600 USD
Prezzo
3 giorni
Tempo
Utile?S senolsenocak525

Germania
Collaborazione in corsoSuper, jederzeit wieder.
1000 USD-2500 USD
Prezzo
13 giorni
Tempo
Utile?S schportling

Germania
Collaborazione in corsoEine tolle Arbeitsebene und noch immer eine fantastische Zusammenarbeit. Danke!
800 USD-1000 USD
Prezzo
1 giorno
Tempo
Utile?
