Timer | Interval vs CogniTrack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timer | Interval
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Timer | Interval is a clean, focused interval timer for HIIT, Tabata, EMOM, AMRAP, boxing rounds, HYROX, CrossFit, circuits, and gym training. Start fast with ready-made workout timers or build your own custom work/rest flow. The full-screen timer stays readable while you train, with clear audio cues, voice countdown options, and haptics so you don't have to keep checking the screen. Features: • 17 ready-made timers across HIIT, Tabata, EMOM, AMRAP, sprint, HYROX, CrossFit, boxing, and functional formats • Custom timer builder with work, rest, warm-up, and cool-down intervals • Big animated countdown display for active workouts • Landscape timer view for side-on training setups • Timer sound, voice countdown, and haptic options • Favourites for one-tap access to the timers you repeat • Dark, distraction-free interface designed for iPhone and iPad Optional Pro Upgrade: • Lifetime Pro unlock — one-time purchase, no subscription • Unlimited custom timers • Premium workout timers • Premium themes • Premium sound and haptic controls • Future Pro improvements Built for athletes who want a timer that gets out of the way and keeps them moving.
CogniTrack
Measure your mental alertness with a scientifically validated reaction time test. Track changes in focus and fatigue throughout the day to understand your cognitive performance and make informed decisions about rest and routines.
- Scientifically validated reaction time test
- Track mental alertness and fatigue
- Personal baseline setting
- Trend charts for performance visualization
- Performance ratings relative to baseline
- Data export and import
- Privacy-focused, data stays on device
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Ever wonder whether your mind is as sharp as usual — or if fatigue is quietly slowing you down? CogniTrack gives you an objective answer. Using a scientifically validated reaction time test, you can measure your mental alertness in under a minute and track how it changes throughout the day. HOW IT WORKS When a visual cue appears on screen, tap as fast as you can. Your reaction times reveal how alert and focused you are in the moment — no guesswork, no subjective ratings. The test is powered by the Psychomotor Vigilance Test (PVT), the same method used by NASA, the US military, and sleep researchers worldwide to assess sustained attention and fatigue. SET YOUR PERSONAL BASELINE Start by taking a 10-trial baseline test when you're fully rested — ideally first thing in the morning. This establishes your personal "best" reaction time as a reference point. Then use quick 6-trial checks throughout the day to see how you compare. Are you still sharp after lunch? How about late in the evening? After that extra cup of coffee? Now you'll know for sure. WHAT YOU'LL DISCOVER • How sleep quality affects your next-day performance • The real cognitive cost of staying up late • Whether caffeine, naps, or breaks actually help • Your personal alertness patterns over days and weeks FEATURES • Quick Check — A fast 6-trial test you can do in under 30 seconds • Personal Baseline — Establish and update your rested reference point • Trend Charts — Visualize your alertness patterns over 7, 30, 90 days, or all time • Performance Ratings — Instantly see if you're performing at Superb, Good, Sluggish, or Impaired levels relative to your baseline • Full History — Browse, search, and review every test you've taken • Guest Mode — Let friends or family take a test on your device without affecting your data • Data Export & Import — Back up your records as JSON whenever you want • Privacy First — All data stays on your device. No accounts, no cloud, no tracking. BUILT FOR SELF-AWARENESS CogniTrack is not a game — it's a personal wellness tool designed to help you build self-awareness about your cognitive performance. By making mental alertness measurable, you can make better decisions about rest, work, and daily routines. Note: CogniTrack is a wellness tool, not a medical device. It is not intended to diagnose, treat, or prevent any medical condition.
Screenshots
Verdict
The clearest difference is in-app purchases: CogniTrack at none against Timer | Interval's 1. Timer | Interval's advantage is iOS requirement (15.1 vs 17.0). 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. Timer | Interval sells 1 one-off in-app purchase. CogniTrack asks for nothing beyond the download.
| Parameter | Timer | Interval | CogniTrack |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 44 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | MICAH JOHN WALKER | Diffuse Thinking LLC |
In-app purchases
Timer | Interval
- Timer | Interval$2.99
CogniTrack
No in-app purchases









