AriesDevs

Sample project · Tandem Learning

A mobile-first learning app that kept learners coming back

Sample project: an illustration of how we approach this kind of work, not a real client engagement.

Student using a tablet in a library
Sample project · Tandem Learning

Industry

Education · Cross-platform learning app

Timeline

5 months

Team

1–2 senior engineers

Stack

  • Flutter
  • Dart
  • Firebase
  • Node.js
  • Figma

01 · The challenge

What was getting in the way

Tandem Learning ran language courses through a web portal that worked poorly on phones and not at all on the long bus rides where most students had time to study. Only one learner in five finished the first month.

Teachers had no view of who was falling behind until the end of term, and the small product team could not afford two separate native apps.

02 · Our solution

What we built and how

We built one Flutter codebase for iOS and Android, with lessons that download in the background and sync progress when the connection returns. Short sessions, streaks and spaced-repetition reviews were tested with 300 learners before the public release.

A teacher dashboard shows each class’s progress and flags learners who have gone quiet, with a one-tap nudge message. Accessibility work covered screen readers, dynamic type and captions on every audio exercise.

03 · Results

What changed after Tandem Learning went live.

Sample figures for this illustrative case study, measured against the period before launch.

4.7★

store rating

Average across both stores, from more than 6,000 ratings.

2.1×

month-one retention

Learners still active after 30 days, compared with the web portal.

58%

offline sessions

Share of lessons completed without a live connection.

Keep reading

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