# OB vs 禁欲カウンター｜Zen Reboot

The clearest difference is ads: OB at none against 禁欲カウンター｜Zen Reboot's shown. OB also leads on iOS requirement (16.0 vs 26.5). 禁欲カウンター｜Zen Reboot's advantage is update cadence (every 4 days vs every 2 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. OB sells 1 in-app purchase, starting at $2.99 per month and 禁欲カウンター｜Zen Reboot sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

OB ships an update every 2 weeks, 禁欲カウンター｜Zen Reboot every 4 days. Both last shipped on September 9, 2026.

## The numbers

| Metric | OB | 禁欲カウンター｜Zen Reboot |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 78 MB | 50 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [KBOY, LLC.](https://appshunter.io/developer/1121544040) | [Masaru Yamagata](https://appshunter.io/developer/6772058361) |

## What reviewers say

### OB

[App page](https://appshunter.io/ios/app/ob-1/id1666271955)

Track your progress in sobriety or no-fap challenges with this dedicated application. It offers tools to help you stay committed to your goals and maintain your abstinence.

**Highlights:** Abstinence tracking, Sobriety support, No-fap challenge tools, Progress monitoring, Commitment tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OB-1 PRO | $2.99 | per month |


### 禁欲カウンター｜Zen Reboot

[App page](https://appshunter.io/ios/app/zen-reboot/id6772058359)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $2.99 | per month |
| 年額プレミアムプラン | $29.99 | per year |


## Frequently asked questions

### Is OB free?

OB is free to download, with in-app purchases available.

### Is 禁欲カウンター｜Zen Reboot free?

禁欲カウンター｜Zen Reboot is free to download, with in-app purchases available.

### Do OB or 禁欲カウンター｜Zen Reboot have ads?

禁欲カウンター｜Zen Reboot shows ads; OB does not.

### Which is updated more often, OB or 禁欲カウンター｜Zen Reboot?

OB ships an update every 2 weeks, and 禁欲カウンター｜Zen Reboot every 4 days. Most recently, OB was updated on September 9, 2026 and 禁欲カウンター｜Zen Reboot on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*