# KeyFilter vs SharpUpscale

The clearest difference is price: SharpUpscale at Free against KeyFilter's $0.99. SharpUpscale also leads on update cadence (every 2 weeks vs every 6 months). KeyFilter's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 17.0). On ads and device support there is nothing between them.

SharpUpscale is free to download; KeyFilter costs $0.99 up front. SharpUpscale sells 3 in-app purchases, starting at $4.99 per month. KeyFilter asks for nothing beyond the download.

KeyFilter ships an update every 6 months, SharpUpscale every 2 weeks. The most recent releases landed on October 4, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | KeyFilter | SharpUpscale |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sharpupscaleai-photo-upscaler/id6761643307/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 138 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Michael Newell](https://appshunter.io/developer/438074478) | [Igor Bidenko](https://appshunter.io/developer/1824855550) |

## What reviewers say

### KeyFilter

[App page](https://appshunter.io/ios/app/keyfilter/id1536178083)

**In-app purchases:** none


### SharpUpscale

[App page](https://appshunter.io/ios/app/sharpupscaleai-photo-upscaler/id6761643307)

Enhance and restore your photos with advanced AI. Upscale images to 16K, sharpen blurry pictures, and bring old memories back to life, all processed privately on your device.

**Highlights:** AI upscaling up to 16K, Blur and noise removal, Old photo restoration, Smart face enhancement, On-device processing, Works offline

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SharpUpscale | $4.99 | per month |
| SharpUpscale | $19.99 | per year |
| SharpUpscale | $29.99 | one-time |


## Frequently asked questions

### Is KeyFilter free?

KeyFilter costs $0.99, with no in-app purchases.

### Is SharpUpscale free?

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

### Do KeyFilter or SharpUpscale have ads?

Neither KeyFilter nor SharpUpscale shows ads.

### Which is updated more often, KeyFilter or SharpUpscale?

KeyFilter ships an update every 6 months, and SharpUpscale every 2 weeks. Most recently, KeyFilter was updated on October 4, 2026 and SharpUpscale on October 18, 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.*