# Keystone Photo Lab vs Perspective Lab

The clearest difference is device support: Keystone Photo Lab at 3 against Perspective Lab's 1. Keystone Photo Lab also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Keystone Photo Lab sells 6 in-app purchases, starting at $2.99 per month and Perspective Lab sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Keystone Photo Lab ships an update every 6 days, Perspective Lab weekly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Keystone Photo Lab | Perspective Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/keystone-photo-lab/id6759060598/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MYKOLA KINDRATYSHYN](https://appshunter.io/developer/1876605049) | [TAKESHI TOMIOKA](https://appshunter.io/developer/6803475314) |

## What reviewers say

### 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 |


### Perspective Lab

[App page](https://appshunter.io/ios/app/perspective-lab/id6803475311)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Day Free Trial | Free | one-time |
| Pro Lifetime | $5.99 | one-time |


## Frequently asked questions

### Is Keystone Photo Lab free?

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

### Is Perspective Lab free?

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

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

Neither Keystone Photo Lab nor Perspective Lab shows ads.

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

Keystone Photo Lab ships an update every 6 days, and Perspective Lab weekly. Most recently, Keystone Photo Lab was updated on October 31, 2026 and Perspective Lab on October 25, 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.*