# Scheme Songs vs Bluetooth Data Logger

The clearest difference is review sentiment: Scheme Songs at 40% against Bluetooth Data Logger's 0%. Scheme Songs also leads on update cadence (every 7 months vs every 58 months) and iOS requirement (9.0 vs 12.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scheme Songs ships an update every 7 months, Bluetooth Data Logger every 58 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Scheme Songs | Bluetooth Data Logger |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **40.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 58 months |
| Monetization | Free | Free |
| Size | 14 MB | 41 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Charanga Ltd](https://appshunter.io/developer/1024961576) | [TTS Group Limited](https://appshunter.io/developer/500131642) |

## What reviewers say

### Scheme Songs

[App page](https://appshunter.io/ios/app/scheme-songs/id1024961577)

Access musical performance backing tracks from a musical school program. Download tracks for offline playback or stream them online. Ideal for rehearsals and performances where internet access may be unreliable.

**Highlights:** Access all performance backing tracks, Download tracks for offline playback, Stream tracks online, Organized by year and term, Searchable A-Z list of tracks, Familiar timeline player

**Features:** macOS Compatibility

**In-app purchases:** none


### Bluetooth Data Logger

[App page](https://appshunter.io/ios/app/bluetooth-data-logger/id1465251278)

This educational tool allows users to collect data using five integrated sensors on compatible tablets. It supports scientific investigations and is suitable for a wide range of age groups.

**Highlights:** Five integrated sensors, Data logging capabilities, Tablet compatibility, Scientific investigations, Educational tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Scheme Songs free?

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

### Is Bluetooth Data Logger free?

Bluetooth Data Logger is free to download, with no in-app purchases.

### Do Scheme Songs or Bluetooth Data Logger have ads?

Neither Scheme Songs nor Bluetooth Data Logger shows ads.

### Which is updated more often, Scheme Songs or Bluetooth Data Logger?

Scheme Songs ships an update every 7 months, and Bluetooth Data Logger every 58 months. Most recently, Scheme Songs was updated on November 1, 2026 and Bluetooth Data Logger on November 3, 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.*