# FormosaAR vs GridFix

The clearest difference is in-app purchases: FormosaAR at none against GridFix's 3. FormosaAR also leads on iOS requirement (15.0 vs 18.0). GridFix's advantage is update cadence (every 4 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. GridFix sells 3 in-app purchases, starting at $2.99 per month. FormosaAR asks for nothing beyond the download.

FormosaAR ships an update monthly, GridFix every 4 days. The most recent releases landed on September 13, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | FormosaAR | GridFix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 488 MB | 5 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [吉羊數位電影有限公司](https://appshunter.io/developer/1269405370) | [PEI-CHUN CHAO](https://appshunter.io/developer/6792030550) |

## What reviewers say

### FormosaAR

[App page](https://appshunter.io/ios/app/formosaar/id1269405701)

**Features:** macOS Compatibility

**In-app purchases:** none


### GridFix

[App page](https://appshunter.io/ios/app/gridfix-perspective-fix/id6792030548)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GridFix 訂閱（月繳） | $2.99 | per month |
| GridFix 訂閱（年繳） | $14.99 | per year |
| GridFix 終身買斷 | $39.99 | one-time |


## Frequently asked questions

### Is FormosaAR free?

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

### Is GridFix free?

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

### Do FormosaAR or GridFix have ads?

Neither FormosaAR nor GridFix shows ads.

### Which is updated more often, FormosaAR or GridFix?

FormosaAR ships an update monthly, and GridFix every 4 days. Most recently, FormosaAR was updated on September 13, 2026 and GridFix on September 8, 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.*