# RAW2HDR vs GridFix

The clearest difference is update cadence: GridFix at every 4 days against RAW2HDR's every 2 weeks. RAW2HDR's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. RAW2HDR sells 1 one-off in-app purchase and GridFix sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

RAW2HDR ships an update every 2 weeks, GridFix every 4 days. The most recent releases landed on September 22, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | RAW2HDR | GridFix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/raw2hdr/id6758991441/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 183 MB | 5 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chris chi-fu HUANG](https://appshunter.io/developer/1856042342) | [PEI-CHUN CHAO](https://appshunter.io/developer/6792030550) |

## What reviewers say

### RAW2HDR

[App page](https://appshunter.io/ios/app/raw2hdr/id6758991441)

Transform your camera's RAW files into stunning 10-bit HDR images with over a billion colors. Enhance brightness, shadows, and color depth for photos that truly pop. Includes professional editing tools, black & white conversion, and customizable frames.

**Highlights:** RAW to 10-bit HDR conversion, Enhanced color depth and dynamic range, Professional editing tools, Black & white conversion, Customizable picture frames and borders, LUT and style simulations, Universal RAW file support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| raw2hdr Pro Unlimited | $2.99 | one-time |


### 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 RAW2HDR free?

RAW2HDR is free to download, with in-app purchases available.

### Is GridFix free?

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

### Do RAW2HDR or GridFix have ads?

Neither RAW2HDR nor GridFix shows ads.

### Which is updated more often, RAW2HDR or GridFix?

RAW2HDR ships an update every 2 weeks, and GridFix every 4 days. Most recently, RAW2HDR was updated on September 22, 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.*