00 vs Kasey Rain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
00
This workout tool allows you to create custom exercise routines with timers, reminders, and notes. Track your progress by saving sessions and viewing your improvements over time. It's a free, personal project designed for users who know their own exercises.
- Customizable exercise display
- Metronome and reminder setup
- Exercise tagging and notes
- Create sets and routines
- Save and track session progress
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00:37 is a workout tool. important notes: - the app doesn't contain any exercises or routines. add and do exercises you know how to do properly. 00:37 does not replace a mentor or classes. - the app is a side project, mostly designed for personal use, made available for free. I may update it occasionally, but don't expect regular updates or convenient features. I may also remove features that don't work for me or change things in ways you may not like; that's part of the deal here. features: - 5 types of exercises display time, repetitions, or amounts in different ways. - add a metronome, setup time, reminder sounds, tags, and notes to your exercises. - create sets and routines of exercises. - save your sessions so you can see how you progress. tip: - you are less likely to miss a timer, break, or reminder by going to Settings > Notifications > 00:37 and setting the notification style to 'Persistent'.
Kasey Rain
Create immersive soundscapes using a variety of white noise and rain sounds. Mix and match audio elements to build personalized ambient experiences for relaxation or focus.
- Customizable soundscapes
- White noise generator
- Rain sound playlist
- Ambient audio mixing
- Relaxation sounds
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Use white noise sounds to create a story.
Screenshots
Verdict
The clearest difference is update cadence: 00 at daily against Kasey Rain's fortnightly. 00 also leads on iOS requirement (10.0 vs 26.0). Kasey Rain's advantage is ratings volume (3 vs 1). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for 00 against 5.0 for Kasey Rain. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
00 ships an update daily, Kasey Rain fortnightly. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.
| Parameter | 00 | Kasey Rain |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Daily — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 28 MB | 560 MB |
| Age rating | 4+ | 4+ |
| Developer | Adriaan de Jongh | Kasey Baughan |
Customer experience
00
Kasey Rain
In-app purchases
00
No in-app purchases
Kasey Rain
No in-app purchases
