# KeyFilter — Photo Upscaler

> Photo Upscaler (iPhone/iPad app by Michael Newell.)

- Source: https://appshunter.io/ios/app/keyfilter/id1536178083 (this page in markdown: same URL + `.md`)
- Developer: [Michael Newell](https://appshunter.io/developer/438074478)
- Category: Photo & Video, Utilities
- Price: $0.99 (on sale, was $2.99)
- Age rating: 4+
- Requires: iOS 13.0 · 2 MB
- Languages: Australian English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, Canadian French, German (Germany) and 23 more
- Released: 2021-02-07
- Data updated: 2026-09-02
- User reviews in markdown: https://appshunter.io/ios/app/keyfilter/id1536178083/reviews.md

## What is KeyFilter?

Upscale photos to a maximum resolution of 8192 x 8192.

Directions
----------
1. Tap the + button on the top right navigation bar to import a file
2. Select a photo to edit by tapping the photo thumbnail in the application
3. Tap the Save button on the top right navigation bar
4. Choose the output resolution


## Version history (last 5 releases)

### 1.0.7 — 2025-08-27

- GUI Redesign
- Added SplitViewController
- Favorite or Hide Photo
- Bug Fixes

### 1.0.6 — 2023-05-12

- Bug fixes
- Added Vibrance filter
- Added Exposure filter
- Added Gamma filter

### 1.0.5 — 2023-05-03

- Bug fixes
- Added drag and drop delegate
- Added hue filter
- Added temperature filter
- Added median filter

### 1.0.4 — 2022-11-12

- Fixed Exif bug on file import
- Added preview button
- Disabled linear filtering for pixel accurate preview

### 1.0.3 — 2022-07-11

- Bug Fixes

## More apps by Michael Newell

- [Utility+](https://appshunter.io/ios/app/utility-plus/id1381200125)
- [Swiftly Solitaire](https://appshunter.io/ios/app/swiftly-solitaire/id1488113324)
- [BufferLoop](https://appshunter.io/ios/app/bufferloop/id1535149219)
- [ByteMarker](https://appshunter.io/ios/app/bytemarker/id1536108526)
- [SeekPlayer](https://appshunter.io/ios/app/seekplayer/id1542540436)

All apps by Michael Newell: https://appshunter.io/developer/438074478

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*