Mindback

How it works

You’re shown a sequence of stimuli — shapes appearing on a grid, sounds playing in sequence, or both at once. Your job: decide whether the current stimulus matches the one from N steps back. The N-back task is one of the most researched methods for training working memory.

Start with a single stream (visual or audio) and work your way up to tracking four simultaneous streams at once.

Training modes

Single N-Back: Track one stream — visual (numbers, letters, shapes, or colors) or audio (spoken numbers or letters). 6 single-mode combinations.
Dual N-Back: Track two streams at once — position plus sound, position plus visuals, or dual audio. Over 50 combinations.
Triple N-Back: Track three independent streams simultaneously. 66 combinations spanning position, audio, and visual channels.
Quad N-Back: The ultimate challenge — track four streams at once. Over 110 combinations with grids, multi-audio, characters, shapes, and colors.

That’s over 190 unique game configurations in total.

Features

Adaptive difficulty: The algorithm tracks your accuracy per stream and automatically adjusts the N-level up or down after each session. You’re always challenged at the right level.
Configurable thresholds: Set your own accuracy thresholds for leveling up or down (65–100% correct to advance, 20–60% errors to drop).
Grid layouts: Choose between compact (1×3) and standard (3×3) grids.
N-level range: Train from N=1 through N=7.
Random cell placement: Toggle character position randomization within grid cells for an added challenge.
Colored cells: Enable color-coded grid cells for visual distinction in multi-stream modes.
End on first error: Optional instant-fail mode for high-stakes practice.
How to Play guide: Contextual instructions for each game mode, with diagrams explaining the rules.
Per-stream scoring: After each session, see accuracy broken down by stream — correct, missed, and incorrect responses tracked separately.
Color-coded results: Accuracy at a glance — green (85%+), teal (65%+), amber (40%+), red (below 40%).
Session history: Browse past sessions with per-stream detail, N-level, duration, and whether the level changed.
Streak calendar: Visual calendar showing your training consistency, current streak, and longest streak.
Daily goal tracking: Set a target (5, 10, 15, 20, 25, or 30 sessions per day) and track your progress with a pill indicator on the home screen.
Dark mode and light mode: Choose Light, Dark, or follow your system setting.

iPhone & iPad

Sessions and settings sync automatically through iCloud across all your Apple devices
An animated banner shows iCloud sync status in real time
Free daily limit (3 sessions) syncs across your Apple devices, so you can’t bypass it by switching devices
In dual-stream modes, different audio streams play in your left and right ears simultaneously for clear separation

Android

Backup to Cloud: Tap “Backup to Cloud” to export your data to Google Drive, email, or any storage app via the Android share sheet
Auto-backup: Optionally save a backup file to a local folder you choose after each session (warns: disconnects if the app is uninstalled)
Restore: Import a backup file from any source — local storage, Google Drive, or any cloud your device can access
Free daily limit (3 sessions) is tracked on your device
Audio streams are centered (both ears) — still fully playable, just without stereo separation

Pricing

Free users get 3 sessions per day. Premium unlocks unlimited sessions, daily goal tracking, and priority support. Available as an annual subscription or a one-time lifetime purchase.