Backtrack Stack

iOS Universel / Jeux

Backtrack Stack is a configurable N‑Back training app designed to help you practice working memory with multiple cue types.

Cues (can be configured):
- Position (3×3 grid)
- Audio letters (spoken)
- Color cue
- Haptics on supported devices

Training modes:
- Adaptive difficulty (d′/accuracy-based)
- Fixed N sessions
- Preset runs (one-tap fixed sessions)
- Optional per‑cue N (advanced)

Stats:
- Track hits, misses, false alarms, correct rejections, and d′ (d-prime) per cue and overall.

Backtrack Stack works great on iPad and iPhone, is highly configurable, and keeps controls simple so you can focus on the task.