# KeyFinder vs Mighty Synth Sampler

The clearest difference is rating: Mighty Synth Sampler at 4.8 against KeyFinder's 2.7. Mighty Synth Sampler also leads on update cadence (fortnightly vs every 3 months) and review sentiment (83% vs 60%). KeyFinder's advantage is in-app purchases (none vs 3) and ratings volume (322 vs 40). On price, ads and device support there is nothing between them.

Both are free to download. Mighty Synth Sampler sells 3 one-off in-app purchases. KeyFinder asks for nothing beyond the download.

Mighty Synth Sampler holds the better App Store score, 4.8 against 2.7. That said, the two scores are not equally well evidenced: KeyFinder has 322 ratings behind it against 40, so its average is the more settled of the two. Written reviews point the same way: 60% of KeyFinder's written reviews are positive against 83% of Mighty Synth Sampler's.

KeyFinder ships an update every 3 months, Mighty Synth Sampler fortnightly. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | KeyFinder | Mighty Synth Sampler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (322 ratings)](https://appshunter.io/ios/app/keyfinder/id301281917/reviews) | **[4.8 (40 ratings)](https://appshunter.io/ios/app/mighty-synth-sampler/id6445898095/reviews)** |
| Number of ratings | **322** | 40 |
| Positive reviews | 60.0% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 158 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Scoreless Music](https://appshunter.io/developer/301281920) | [Moby Pixel](https://appshunter.io/developer/1435802052) |

## What reviewers say

### KeyFinder

[App page](https://appshunter.io/ios/app/keyfinder/id301281917)

Identify the musical key of any song you're listening to. Use the integrated piano to play along and confirm notes, helping the app pinpoint the correct key. Explore music theory and learn to play songs in different keys.

**Highlights:** Identify song keys, Built-in piano keyboard, Note confirmation, Narrow down possible keys, Learn songs in any key

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💡 Useful for finding song keys
- 👍 Simple and effective key locking
- 💡 Cool LED display
- 💡 Good for songwriting aid
- 💡 Works well for intended purpose

**What reviewers complain about**

- 🤔 Hard to use and unclear
- 🤔 No sound produced
- 🤔 Limited key support (e.g., no C sharp)
- 🤔 Slow response to touch
- 🤔 Difficulty hearing keys with background music

**Reported bugs**

- No sound
- Slow response to touch
- Cannot play minor scales in Ref mode
- Difficulty controlling volume with background music

**Requested features**

- Bring the app back
- Update to 64bit
- Label notes on piano keys
- Ability to move up and down the keyboard
- More keys supported (hundreds)


### Mighty Synth Sampler

[App page](https://appshunter.io/ios/app/mighty-synth-sampler/id6445898095)

Transform any sound into a playable instrument with this powerful synth and sampler. Create custom instruments, layer sounds, and perform with your unique audio creations. Supports SoundFonts and offers advanced synthesis features.

**Highlights:** Three-oscillator synth engine, 16-slot sampler with loop points, Audio recording and import, SoundFont (SF2/SFZ) support, AUv3 plugins for DAWs, Downloadable sound packs

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vintage Synth Sound Pack | $4.99 | one-time |
| Super Chiptune Sound Pack | $4.99 | one-time |
| Tape Drift Sound Pack | $4.99 | one-time |


## Frequently asked questions

### Is KeyFinder free?

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

### Is Mighty Synth Sampler free?

Mighty Synth Sampler is free to download, with in-app purchases available.

### Which has better reviews, KeyFinder or Mighty Synth Sampler?

Mighty Synth Sampler is rated higher. KeyFinder averages 2.7 out of 5 from 322 ratings, while Mighty Synth Sampler averages 4.8 from 40 ratings.

### Do KeyFinder or Mighty Synth Sampler have ads?

Neither KeyFinder nor Mighty Synth Sampler shows ads.

### Which is updated more often, KeyFinder or Mighty Synth Sampler?

KeyFinder ships an update every 3 months, and Mighty Synth Sampler fortnightly. Most recently, KeyFinder was updated on October 8, 2026 and Mighty Synth Sampler on October 11, 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.*