# KeyFinder vs Tone Scan

The clearest difference is in-app purchases: KeyFinder at none against Tone Scan's 4. KeyFinder also leads on ratings volume (321 vs 6) and update cadence (every 3 months vs every 7 months). Tone Scan's advantage is rating (3.2 vs 2.8). On price, ads and device support there is nothing between them.

Both are free to download. Tone Scan sells 2 one-off in-app purchases. KeyFinder asks for nothing beyond the download.

Tone Scan holds the better App Store score, 3.2 against 2.8. That said, the two scores are not equally well evidenced: KeyFinder has 321 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 60% of KeyFinder's written reviews are positive against 50% of Tone Scan's, so the app with the better star average is not the one people write more warmly about.

KeyFinder ships an update every 3 months, Tone Scan every 7 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | KeyFinder | Tone Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (321 ratings)](https://appshunter.io/ios/app/keyfinder/id301281917/reviews) | **[3.2 (6 ratings)](https://appshunter.io/ios/app/tone-scan/id1435240826/reviews)** |
| Number of ratings | **321** | 6 |
| Positive reviews | **60.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 4 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Scoreless Music](https://appshunter.io/developer/301281920) | [Openchord Inc.](https://appshunter.io/developer/1435193332) |

## 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)


### Tone Scan

[App page](https://appshunter.io/ios/app/tone-scan/id1435240826)

Analyze live or recorded audio to reveal musical details like pitch, timbre, and tonal balance. This app offers three live scans to help you understand sound more deeply, simplifying tasks like instrument tuning and learning songs by ear.

**Highlights:** Chromatic spectrum analysis, Polyphonic tuner, Note mix for tonal balance, Pitch recognition, Timbre analysis, Instrument tuning, Chord and key spelling

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Free Trial | Free | one-time |
| Unlock Audio | $4.99 | one-time |


## Frequently asked questions

### Is KeyFinder free?

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

### Is Tone Scan free?

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

### Which has better reviews, KeyFinder or Tone Scan?

Tone Scan is rated higher. KeyFinder averages 2.8 out of 5 from 321 ratings, while Tone Scan averages 3.2 from 6 ratings.

### Do KeyFinder or Tone Scan have ads?

Neither KeyFinder nor Tone Scan shows ads.

### Which is updated more often, KeyFinder or Tone Scan?

KeyFinder ships an update every 3 months, and Tone Scan every 7 months. Most recently, KeyFinder was updated on October 23, 2026 and Tone Scan on October 22, 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.*