# MuxStream vs Key/Frame

The clearest difference is price: MuxStream at Free against Key/Frame's $3.99. MuxStream also leads on in-app purchases (none vs 5) and iOS requirement (13.4 vs 26.6). Key/Frame's advantage is update cadence (every 3 weeks vs every 6 weeks). On ads and device support there is nothing between them.

MuxStream is free to download; Key/Frame costs $3.99 up front. Key/Frame sells 5 in-app purchases, starting at $1.99 per month. MuxStream asks for nothing beyond the download.

MuxStream ships an update every 6 weeks, Key/Frame every 3 weeks. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | MuxStream | Key/Frame |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyframe/id6738200817/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 8 MB |
| Requires iOS | **13.4** | 26.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MuxLab Inc.](https://appshunter.io/developer/515947294) | [Stephan Koopmans](https://appshunter.io/developer/1593735192) |

## What reviewers say

### MuxStream

[App page](https://appshunter.io/ios/app/muxstream/id1547452671)

**Features:** macOS Compatibility

**In-app purchases:** none


### Key/Frame

[App page](https://appshunter.io/ios/app/keyframe/id6738200817)

Effortlessly extract stunning still images from your videos using on-device AI. This tool automatically identifies the most visually striking frames, making it simple to capture perfect moments from any clip. Save, share, and bookmark your favorite stills with ease.

**Highlights:** AI-picked highlights, Import from Photo Library/Files, Save and share stills, Bookmark favorite frames, On-device processing for privacy

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Month) | $1.99 | per month |
| Pro Family (Month) | $3.99 | per month |
| Pro (Year) | $17.99 | per year |
| Pro Family (Year) | $34.99 | per year |
| Pro (Lifetime) | $24.99 | one-time |


## Frequently asked questions

### Is MuxStream free?

MuxStream is free to download, with no in-app purchases.

### Is Key/Frame free?

Key/Frame costs $3.99, and also offers in-app purchases.

### Do MuxStream or Key/Frame have ads?

Neither MuxStream nor Key/Frame shows ads.

### Which is updated more often, MuxStream or Key/Frame?

MuxStream ships an update every 6 weeks, and Key/Frame every 3 weeks. Most recently, MuxStream was updated on September 9, 2026 and Key/Frame on September 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.*