Digit Span Trainer

Train your working memory with Forward, Backward, and Sequencing challenges. Choose visual or spoken digits, repeat them correctly, and build your span over time.

Free Core:

• All three Classic modes and Training Journey
• Visual and audio presentation
• Personal bests, charts, accuracy, streaks, and recall speed
• Local Next session recommendations
• CSV import and export
• Multiple visual themes
• Ad-free and usable offline without an account

Digit Span Lab — optional permanent unlock:

• Save custom local training programs and presets
• Run advanced local mode-switch, dual-channel, and overload drills
• Study serial-position errors and response-time patterns
• Compare recent and prior performance in deeper local reports
• Set local goals and share a saved report snapshot
• Pay once through Google Play; no Coach sign-in required
• Lab includes no AI Coach credits

Span Coach — separate optional service:

• Sign in to claim 10 lifetime personalized Coach samples, to use whenever you like
• Turn a Coach plan into a focused five-round session and review the result
• Add a repeatable one-time Coach Pack with 365 non-expiring insights
• No Coach subscription is offered to new customers; an existing legacy subscriber can still manage the subscription already purchased

A Lab refund or revocation relocks Lab editing and drills without deleting saved local programs or the last saved report. Generated Span Coach plans and reviews require Google sign-in and an internet connection. Signed-in users can permanently delete their Coach cloud account in More > Settings > Account. The Google-authenticated account-deletion page linked from Google Play works without the app.

Published by PierDo.

OPTIONAL SUPPORT
Choose a preset tip to support PierDo. Tips are separate, repeatable purchases and add no Lab features or Coach credits.

Recent changes:
What's new in 3.11.0:
• Lab is easier to find: a short Lab row on Train and the Lab offer right under your personal best on Stats.
• When the same answer position keeps slipping, the app now tells you, using only the rounds saved on your device.
• A quiet line on Train on the last day of your Lab trial.
• The upgrade screen now lists every Lab tool.
• Your 10 free Coach samples can now be used at any pace, not just one a day.