NumbBrain vs Onsen Tamago
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NumbBrain
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Reduce screen time without deleting the apps you still need. NumbBrain helps you block distracting apps and app categories during work, study, reading, bedtime, or any focus routine you want to protect. Use NumbBrain to: - Block selected apps and app categories - Create automatic focus schedules - Set rules for weekdays, weekends, nights, or custom routines - Unlock only when you really need a short break - Review screen time stats and understand what pulls your attention NumbBrain is designed for people who want stronger app limits, fewer distractions, and a calmer phone. In-App Purchase: Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your App Store account settings. Email jiangdi0924@gmail.com Terms: https://jdi-app.notion.site/Terms-5a99ba5bf942491b8299c07221bb5f7b Privacy: https://jdi-app.notion.site/Privacy-Policy-cdb1be6b87f64c06b7dbea6ffbbad83f
Onsen Tamago
This app encourages focused work sessions by gamifying phone usage. Users engage in a virtual onsen experience that progresses as they stay off their device for set periods. It aims to improve concentration and well-being through mindful breaks.
- Gamified focus timer
- Virtual onsen experience
- Encourages phone-free time
- Promotes well-being
- Progressive onsen growth
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Put your phone away and bath your mind in this Onsen. It takes 25 minutes to enjoy the full health benefit.
Screenshots
Verdict
The clearest difference is in-app purchases: Onsen Tamago at none against NumbBrain's 3. Onsen Tamago also leads on update cadence (every 2 months vs every 4 months) and iOS requirement (15.0 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. NumbBrain sells 3 in-app purchases, starting at $0.99 per month. Onsen Tamago asks for nothing beyond the download.
NumbBrain ships an update every 4 months, Onsen Tamago every 2 months. Both last shipped on October 24, 2026.
| Parameter | NumbBrain | Onsen Tamago |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 229 MB |
| Age rating | 4+ | 4+ |
| Developer | 笛 姜 | Troubadour Game Studio LLC |
In-app purchases
NumbBrain
- Monthly Premium$0.991 Month
- Annual Premium14 Days trial$2.991 Year
- Lifetime Premium$5.99
Onsen Tamago
No in-app purchases
