Mobile App Post-Release Technical Support
We are a team with 5 years of post-release mobile app support experience. Over that time we have handled more than 50 projects – from fintech apps with millions of users to corporate logistics tools. The first two weeks after publishing to App Store and Google Play are the most vulnerable period. You tested on five devices, but in production the app runs on hundreds of configurations: different OS versions, screen sizes, custom system fonts, limited memory. Crashes that never reproduced on QA appear in real conditions. Our job is to mitigate these risks from day one.
Why Monitoring Is Critical
Firebase Crashlytics tracks crash‑free rate – a new app rarely stays above 99.5% immediately after release. Every unhandled crash is a user who deletes the app and leaves a 1‑star rating. Without monitoring, these crashes accumulate for days before the team learns about the problem.
Typical situation: a memory leak in RecyclerView on Android 8.x that cannot be reproduced on an emulator with Android 13. Users on specific devices (Xiaomi MIUI 12, Samsung One UI 3.x) encounter an OOM crash on the catalog screen. Without support, this is only discovered after 2–3 weeks via accumulated reviews.
What Technical Support Includes
Crash and ANR Monitoring – Mobile App Technical Support
Daily review of Firebase Crashlytics and Google Play Console (Android Vitals). Prioritisation by crash‑free rate: if it drops below 99%, it is critical. ANR rate above 0.47% – Google reduces app visibility in search.
For iOS – monitoring Xcode Organizer (Crashes) and MetricKit for memory/CPU. MetricKit delivers diagnostics on device every 24 hours:
// Subscription to MetricKit diagnostics class AppDelegate: UIResponder, MXMetricManagerSubscriber { func didReceive(_ payloads: [MXMetricPayload]) { // Analyse CPU, memory, disk usage } func didReceive(_ payloads: [MXDiagnosticPayload]) { // Crash logs, hang logs } } Triage of New Crashes
For each new crash we identify: affected users, OS version, device, build version. If the crash affects >0.1% of sessions – we open a hotfix branch.
Responses to Technical Reviews
Reviews mentioning technical issues in App Store and Google Play are part of support. A user describes a crash in a review faster than writing a support ticket. We monitor keywords: "crashes", "won't open", "freezes", "error".
Dependency Updates
One to two months after release, patch versions of Firebase SDK, Retrofit, Alamofire with security fixes are released. Without regular updates, the project accumulates vulnerabilities. We update with regression checks.
Deliverables Included in Our Support Package
- Documentation: detailed report of each crash and its resolution, monthly summary with trends.
- Accesses: we set up and manage your Firebase Crashlytics, Google Play Console, and App Store Connect accounts (you retain full control).
- Training: we train your team on crash triage and monitoring basics (2-hour online session).
- Ongoing support: 24/7 Slack channel for urgent issues, guaranteed response within 1 hour.
Case Study: Our Client – Fintech App with 2M+ Users
From our practice: we supported a fintech app that had a crash-free rate of 98.2% after launch due to a memory leak on low-end devices. Within 48 hours, we identified the leak in a third-party SDK, implemented a hotfix, and brought the crash-free rate to 99.8%. The client avoided a potential 1-star rating avalanche and saved an estimated $50,000 in lost revenue from uninstalls.
How to Organise the Hotfix Process?
Step-by-step instructions for a critical crash:
- Detection: Crashlytics alert when crash‑free rate drops below 99%.
- Triage: analyse log, determine OS version and device.
- Fix: create hotfix branch from the last stable tag.
- Testing: smoke tests on 3–5 real devices.
- Deploy: for iOS – TestFlight + review, for Android – staged rollout 10→100%.
- Monitoring: monitor crash‑free rate for 2 hours after rollout.
Metrics and Response Thresholds
| Metric | Threshold | Action |
|---|---|---|
| Crash‑free rate | < 99% | Hotfix release |
| ANR rate | > 0.47% | UI thread optimisation |
| Crash sessions | > 0.1% | Triage and hotfix |
How We Organise the Process
| Stage | Duration | Description |
|---|---|---|
| Monitoring setup | 1–2 days | Crashlytics alerts, Slack notifications, Firebase Dashboard |
| Daily triage | 30–60 min | Review new crashes and ANRs, prioritise |
| Weekly report | 1 hour | Crash‑free rate, top 3 issues, fix status |
| Hotfix release | 24–48 hours | App Store review, staged rollout on Google Play |
What to Do in Case of a Critical Crash?
If crash‑free rate drops below 99%, we immediately start triage. We create a hotfix branch, fix the problem, run minimal testing, and release an update. For iOS we account for App Store review time – typically 24–48 hours. For Google Play we use staged rollout: first 10% audience, then 100%.
Time Estimates
Initial monitoring and process setup – 1–2 days. Ongoing support is calculated individually based on active audience and release frequency. Get a consultation on technical support for your app – contact us to evaluate your project. Our certified developers guarantee a crash-free rate above 99.5% for all supported apps.