# J vs Start From Zero

The clearest difference is update cadence: Start From Zero at monthly against J's every 3 months. J's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

J ships an update every 3 months, Start From Zero monthly. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | J | Start From Zero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 81 MB | 170 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [weichieh lin](https://appshunter.io/developer/1683777188) | [Michael Westman](https://appshunter.io/developer/1484789449) |

## What reviewers say

### J

[App page](https://appshunter.io/ios/app/j-lin-infinity/id1643486063)

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

**In-app purchases:** none


### Start From Zero

[App page](https://appshunter.io/ios/app/start-from-zero/id6743040423)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is J free?

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

### Is Start From Zero free?

Start From Zero is free to download, with no in-app purchases.

### Do J or Start From Zero have ads?

Neither J nor Start From Zero shows ads.

### Which is updated more often, J or Start From Zero?

J ships an update every 3 months, and Start From Zero monthly. Most recently, J was updated on October 4, 2026 and Start From Zero on October 3, 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.*