# J17 Performance vs Fourthzone

J17 Performance and Fourthzone are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

J17 Performance ships an update every 2 weeks, Fourthzone every 3 weeks. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | J17 Performance | Fourthzone |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 192 MB | 194 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [1000073741 Ontario Inc.](https://appshunter.io/developer/6777971859) | [FOURTHZONE LIMITED](https://appshunter.io/developer/6785445065) |

## What reviewers say

### J17 Performance

[App page](https://appshunter.io/ios/app/j17-performance/id6777971857)

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

**In-app purchases:** none


### Fourthzone

[App page](https://appshunter.io/ios/app/fourthzone/id6785445063)

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

**In-app purchases:** none


## Frequently asked questions

### Is J17 Performance free?

J17 Performance is free to download, with no in-app purchases.

### Is Fourthzone free?

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

### Do J17 Performance or Fourthzone have ads?

Neither J17 Performance nor Fourthzone shows ads.

### Which is updated more often, J17 Performance or Fourthzone?

J17 Performance ships an update every 2 weeks, and Fourthzone every 3 weeks. Most recently, J17 Performance was updated on October 8, 2026 and Fourthzone on October 4, 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.*