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iOS Two-Factor Authentication App Rewrite for Croatian Nonprofit

Services Covered:

Mobile Application Development
Project hero — replace with case study imagery
Industry
Industry

Information Technology

Duration
Duration

1 month

Budget
Budget

Less than 10K

Start Date
Start Date

1 November 2019

Team Size
Team Size

1-5

Engagement Model
Engagement Model

Onshore

Project Capability Score (PCS)

gauge meter
75/100
Good

Project Capability Score (PCS) estimates how capable Undabot is of successfully delivering a project like this, based on its past experience, track record, and ability to handle similar work. Learn more about PCS

Client

CARNET

mapZagreb, Croatia

Project Summary

Undabot rewrote a Croatian nonprofit's iOS two-factor authentication app to resolve crashes on newer iOS versions and restore reliable service. The team delivered a beta ahead of schedule and pushed a stable production release, quickly addressing a minor post-release bug. Stakeholders observed an immediate drop in crashes and helpdesk calls, and praised Undabot's responsiveness, speed, and technical knowledge.

Key Challenges

  • App crashed for a subset of iOS users on new OS versions
  • Required a fast fix while the app was in production and used by thousands of users
  • Maintain two-factor authentication functionality for government services

Project Deliverables

  • Rewritten iOS mobile app
  • Beta release
  • Production release on the App Store
  • Post-release bug fixes

Project Solution

Undabot recommended and executed a full rewrite of the client's iOS app rather than incremental fixes. They developed and delivered a beta version with few bugs ahead of schedule using only the old codebase and minimal documentation. The vendor fixed the remaining issues, pushed a production release to the App Store, and rapidly diagnosed and fixed a minor post-release bug. The assigned team included a project manager and two developers.

Project Outcome

  • Immediate drop in app crashes and helpdesk calls within a day of release
  • Fast and effective workflow with responsive communication
  • High client satisfaction with Undabot's technical knowledge, speed, and attention to detail

Platforms

  • MobileMobile

Tech Stack

  • iOSiOS

Client Endorsement

Overall Review Rating

5star

Timeliness

Cost Rating

Willing to Refer

Quality of Deliverables

“After the app launched, stakeholders noted fewer crashes and helpdesk calls. Undabot was a detail-oriented team that combined efficiency with effectiveness. Their responsive communication and depth of knowledge were highlights.”

Marin Milović

Software Engineer

Note: This endorsement is based on publicly available client feedback from external review sources.

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