# Electronic seal[PRO] vs Focus One

The clearest difference is price: Focus One at Free against Electronic seal[PRO]'s $14.99. Focus One also leads on update cadence (every 2 weeks vs every 6 weeks). Electronic seal[PRO]'s advantage is ads (none vs shown) and device support (3 vs 1). On in-app purchases there is nothing between them.

Focus One is free to download; Electronic seal[PRO] costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electronic seal[PRO] ships an update every 6 weeks, Focus One every 2 weeks. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Electronic seal[PRO] | Focus One |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Size | 79 MB | 6 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kazuya Fujita](https://appshunter.io/developer/1358322690) | [BYNET](https://appshunter.io/developer/1811735131) |

## What reviewers say

### Electronic seal[PRO]

[App page](https://appshunter.io/ios/app/electronic-sealpro/id1448877613)

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

**In-app purchases:** none


### Focus One

[App page](https://appshunter.io/ios/app/focus-one-adhd-and-focus-timer/id6756911974)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Electronic seal[PRO] free?

Electronic seal[PRO] costs $14.99, with no in-app purchases.

### Is Focus One free?

Focus One is free to download, with no in-app purchases.

### Do Electronic seal[PRO] or Focus One have ads?

Focus One shows ads; Electronic seal[PRO] does not.

### Which is updated more often, Electronic seal[PRO] or Focus One?

Electronic seal[PRO] ships an update every 6 weeks, and Focus One every 2 weeks. Most recently, Electronic seal[PRO] was updated on October 12, 2026 and Focus One on October 15, 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.*