Rebuild Your Focus review
A private, offline-friendly browser exercise for focused Dual N-Back practice.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Rebuild Your Focus is a free, browser-based brain-training project for people who want a focused working-memory exercise rather than a broad set of games. Its live offering is Dual N-Back, implemented around the Jaeggi 2008 paradigm. The project is designed for offline, local-first use: it stores training sessions locally and states that it has no ads, tracking, user accounts, or cloud sync. The code is open source under the MIT license, making this a straightforward option for solo users or small groups who value privacy and want to practice in a web browser.
The main strength is its narrow focus and local-first design. A user can practice Dual N-Back without creating an account, and session storage stays on the device rather than syncing to a cloud account. That combination will appeal to people who want a lightweight routine without advertising or tracking. The trade-off is that local storage is not a substitute for cloud sync: users who want to carry session history between devices should look elsewhere. The published offering is for the web, and the project describes offline use, so its fit is clearest for browser-based practice rather than a multi-platform training setup.
The exercise range is also limited. Although the project describes itself as a suite of games and guides, Dual N-Back is the live game; Double Decision and other exercises are described as in development. It is therefore better suited to users specifically seeking this memory exercise than to buyers who want varied training categories or a wider program. Support is through the community, which may be less suitable for people who expect direct assistance. Pick Rebuild Your Focus for free, private Dual N-Back practice; choose a broader app if variety, synced progress, or direct support matters more.
Rebuild Your Focus pros and cons
- Where it wins
- Free Dual N-Back training with no ads or user accounts
- Designed for offline use, with sessions stored locally
- MIT-licensed open-source code with no tracking
- Where it doesn't
- The live offering focuses on Dual N-Back rather than varied exercises
- No cloud sync for training sessions
- Community support may not suit buyers seeking direct support
Rebuild Your Focus fact sheet, pricing and score →
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