# HDR vs Keystone Photo Lab

The clearest difference is price: Keystone Photo Lab at Free against HDR's $1.99. Keystone Photo Lab also leads on rating (5.0 vs 2.4) and update cadence (every 6 days vs every 4 months). HDR's advantage is in-app purchases (none vs 6) and ratings volume (10 vs 2). On ads and device support there is nothing between them.

Keystone Photo Lab is free to download; HDR costs $1.99 up front. Keystone Photo Lab sells 6 in-app purchases, starting at $2.99 per month. HDR asks for nothing beyond the download.

Keystone Photo Lab holds the better App Store score, 5.0 against 2.4. That said, the two scores are not equally well evidenced: HDR has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 71% of HDR's written reviews are positive against 100% of Keystone Photo Lab's.

HDR ships an update every 4 months, Keystone Photo Lab every 6 days. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HDR | Keystone Photo Lab |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.4 (10 ratings)](https://appshunter.io/ios/app/hdr/id600529720/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/keystone-photo-lab/id6759060598/reviews)** |
| Number of ratings | **10** | 2 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 27 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lucky Clan](https://appshunter.io/developer/294866851) | [MYKOLA KINDRATYSHYN](https://appshunter.io/developer/1876605049) |

## What reviewers say

### HDR

[App page](https://appshunter.io/ios/app/hdr/id600529720)

Capture stunning High-Dynamic-Range photos by merging multiple exposures. This app offers automatic and manual controls, the ability to import existing images, and various mixing options for professional-looking results. Achieve sharper images with automatic alignment and save directly to your device.

**Highlights:** Automatic and manual exposure modes, Import photos from library, Four HDR mix options, Automatic photo alignment, Native camera resolution support, Fast capture and merge

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast processing
- 💡 Useful HDR features
- 🌟 Excellent image quality

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 🚫 Lack of updates and compatibility
- 🔍 Limited customization options
- 💸 Overpriced for features

**Reported bugs**

- Crashes when loading images
- Alignment issues and ghosting
- Incompatibility with newer iOS versions

**Requested features**

- More exposure control and manual adjustments
- Support for multiple exposures (3+) for better HDR
- Automatic saving to photo library
- Expanded filter and editing options


### Keystone Photo Lab

[App page](https://appshunter.io/ios/app/keystone-photo-lab/id6759060598)

This app corrects perspective distortions and fills empty corners with AI. It can also expand image frames, upscale resolution, and preserve wide-gamut color and HDR. Edits are processed at full quality without requiring an account.

**Highlights:** Perspective and keystone correction, AI corner fill at full resolution, Generative expand for extending frames, Upscale and recreate image details, Preserves Display P3 color and HDR, Maintains original file format and metadata

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Play (Monthly) | $2.99 | per month |
| Media (Monthly) | $9.99 | per month |
| Play (Yearly) | $29.99 | per year |
| Pro (Monthly) | $29.99 | per month |
| Media (Yearly) | $99.99 | per year |
| Pro (Yearly) | $299.99 | per year |


## Frequently asked questions

### Is HDR free?

HDR costs $1.99, with no in-app purchases.

### Is Keystone Photo Lab free?

Keystone Photo Lab is free to download, with in-app purchases available.

### Which has better reviews, HDR or Keystone Photo Lab?

Keystone Photo Lab is rated higher. HDR averages 2.4 out of 5 from 10 ratings, while Keystone Photo Lab averages 5.0 from 2 ratings.

### Do HDR or Keystone Photo Lab have ads?

Neither HDR nor Keystone Photo Lab shows ads.

### Which is updated more often, HDR or Keystone Photo Lab?

HDR ships an update every 4 months, and Keystone Photo Lab every 6 days. Most recently, HDR was updated on November 10, 2026 and Keystone Photo Lab on October 31, 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.*