CASE STUDY

MOBILE BANKING APP
FROM 2.1 TO 4.8
STAR RATING

FOR A FINTECH COMPANY

MOBILE BANKING APP TESTING
ABOUT CLIENT
ABOUT CLIENT
ABOUT CLIENT
ABOUT CLIENT

Digital banking startup with mobile-only platform suffering from 2.1-star rating. Customer acquisition stalled, marketing ROI zero. CEO deadline: 3 months to fix or shutdown.

The platform needed comprehensive mobile testing across 67 device configurations to transform a failing banking app into a top-rated financial services platform.

MOBILE BANKING APP TESTING
CHALLENGE
CHALLENGE
CHALLENGE
CHALLENGE
CHALLENGE

Critical issues affecting user experience and platform reliability:

8.3% crash rate

15%+ crash rate on some device models, creating severe reliability issues.

Login failures

Biometric bugs and session timeouts preventing users from accessing their accounts.

Failed transfers and incorrect balances

Duplicate transactions and balance discrepancies eroding customer trust.

Device compatibility issues

App worked on flagship devices but failed on mid-range and older models.

Performance problems

Slow load times (8-12 seconds), UI lag, and excessive battery drain.

Security vulnerabilities

Biometric bypasses and insecure storage of sensitive financial data.

MOBILE BANKING APP TESTING
SOLUTION
SOLUTION
SOLUTION
SOLUTION

Implementation

5-person mobile testing team:

Device Testing (67 Configurations)

iOS 14-17, Android 10-14: flagship to budget devices. Various screens (notched, foldable, tablets), chipsets, memory. Real physical devices for accurate results.

Functional & Security Testing

420+ scenarios: all banking workflows. Biometrics (Face ID, Touch ID, fingerprint). Transactions, account management, notifications. Security: jailbreak/root detection, secure storage, SSL pinning.

Performance & Stability

Crash logging (Firebase Crashlytics), memory leaks, battery profiling, launch times. Poor network conditions (2G, 3G, dropouts). Low memory/battery behavior.

Usability & Accessibility

UI/navigation improvements identified. VoiceOver, TalkBack, screen readers tested. 5 languages, regional formats validated.

Continuous Monitoring

Crash reporting, CI/CD smoke tests, quality dashboards for ongoing quality assurance.

Tools

Appium XCUITest Espresso Firebase Crashlytics Charles Proxy Postman JIRA TestFlight Google Play Console
MOBILE BANKING APP TESTING
RESULTS
RESULTS
RESULTS
RESULTS
4.8★
App Store Rating Achieved
99.4%
App Stability Rate
0.2%
Crash Rate (Down from 8.3%)
340%
User Growth in 6 Months

Key Achievements:

  • App rating climbed from 2.1 to 4.8 stars – 12,000+ positive reviews praising stability and performance
  • App stability reached 99.4% – Crash rate dropped from 8.3% to 0.2%, eliminating critical reliability issues
  • 340% user growth in 6 months – From 45,000 to 198,000 active users as word-of-mouth improved
  • 87 critical crashes fixed – All major crash scenarios eliminated across device matrix
  • Transaction success rate: 99.8% – Eliminated failed transfers and duplicate transaction issues
  • App load time reduced 73% – From 8-12 seconds to 2-3 seconds average
  • Customer acquisition cost down 62% – Improved ratings reduced need for paid advertising
  • Saved company from shutdown – CEO credits quality transformation with saving the business
MOBILE BANKING APP TESTING
SUMMARY
SUMMARY
SUMMARY
SUMMARY

Business value

  • Comprehensive mobile testing across 67 device configurations transformed a failing banking app into a top-rated financial services platform
  • Drove 340% user growth and saved the company from potential shutdown
  • Delivered exceptional user experience with 99.4% stability and 4.8-star rating

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