TrueZone vs Blue Mood Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TrueZone
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The future of fitness testing. TrueZone offers quick-and-easy, gold-standard fitness testing for coaches or individuals, requiring only a heart rate monitor.
Blue Mood Tracker
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Easily track your mental health and mood throughout the day with Blue. It's a simple, easy to use, beautifully designed app to track moods, feelings, and other thoughts you have. It features over 15 mood faces, 8 colors to choose from, and custom feelings. Simple pick a face & color and select all of the emotions that apply. Or enter a custom one! Then enter any notes or thoughts you're having. Easily review previous days and track how your mood is changing over time. Blue also features reminders to get notified throughout the day to track your mood. You can enable or disable each time individually and customize when you'd like the get reminded.
Screenshots
Verdict
The clearest difference is in-app purchases: Blue Mood Tracker at none against TrueZone's 2. TrueZone's advantage is update cadence (every 3 weeks vs every 45 months) and iOS requirement (14.0 vs 26.6). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. TrueZone sells 2 one-off in-app purchases. Blue Mood Tracker asks for nothing beyond the download.
TrueZone ships an update every 3 weeks, Blue Mood Tracker every 45 months. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.
| Parameter | TrueZone | Blue Mood Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 45 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.6 |
| Further details — not scored | ||
| Size | 72 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Driftline ehf. | Ryan Hunter |
In-app purchases
TrueZone
- Heart rate analysis$5.99
- 10 fitness tests$49.99
Blue Mood Tracker
No in-app purchases
