Gillwise vs ADHD Nook
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Gillwise
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Keep a sequence of planned and performed water changes, compare nitrate dilution estimates with actual after-tests and preserve the assumptions behind the plan. HOW IT WORKS 1. Open Tools and Water Change Journal. Verify net water volume, starting nitrate reading and its date. 2. Add changes with replacement volume and source-water nitrate. Mark a change performed only after doing it, and add an optional actual after-test. 3. Review the chart and sequence, save the journal and share the record. Tank records, tests, maintenance tools and references remain available. The calculator now flags source water that cannot reach the requested nitrate target. An unreadable tank store blocks replacement and preserves the original file. WHAT TO KNOW Dilution assumes uniform mixing and no new nitrate production or removal between steps. It is a planning estimate, not a recommendation about a safe change size. Actual after-tests become the next starting value. Use measured net volume. Up to 12 changes per journal and 100 journals. pH is no longer offered as a linear dilution calculation. iPhone and iPad.
ADHD Nook
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ADHD Nook is a cozy, minimal tool picker designed for neurodivergent minds. Whether you need to focus, restore your energy, or regulate big feelings, the app gently guides you toward a helpful activity. Tap one of three states β Focus, Restorative, or Emotional Regulation β then choose βSurprise meβ for a random suggestion or βBrowseβ to explore 30+ tools. Each tool includes simple, step-by-step guidance and a built-in timer, so you can start without overthinking. Build a personalized avatar, collect character badges for completed tools, and keep a chronological scrapbook of what helped. Everything stays private on your device. No accounts. No tracking. Just a soft, accessible nook for your brain.
Screenshots
Verdict
The clearest difference is price: ADHD Nook at Free against Gillwise's $0.99. ADHD Nook also leads on iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
ADHD Nook is free to download; Gillwise costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Gillwise | ADHD Nook |
|---|---|---|
| Price | $0.99 | Free β better |
| Update frequency | Every 5 days | β |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | +4 | 4+ |
| Developer | Robert Corbin | Ardis Zhong |
In-app purchases
Gillwise
No in-app purchases
ADHD Nook
No in-app purchases









