# Audio Maths vs DLR Test Trainer

The clearest difference is in-app purchases: DLR Test Trainer at none against Audio Maths's 2. DLR Test Trainer also leads on update cadence (daily vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Audio Maths sells 2 in-app purchases, starting at $3.99 per month. DLR Test Trainer asks for nothing beyond the download.

Audio Maths ships an update every 2 weeks, DLR Test Trainer daily. The most recent releases landed on June 11, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Audio Maths | DLR Test Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Size | 11 MB | 53 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Felix Desiderato](https://appshunter.io/developer/1742514874) | [Noa Walser](https://appshunter.io/developer/6776944214) |

## What reviewers say

### Audio Maths

[App page](https://appshunter.io/ios/app/audio-maths/id6754295502)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $3.99 | per month |
| Lifetime Access | $5.99 | one-time |


### DLR Test Trainer

[App page](https://appshunter.io/ios/app/dlr-test-trainer-pilot-exam/id6779955509)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Audio Maths free?

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

### Is DLR Test Trainer free?

DLR Test Trainer is free to download, with no in-app purchases.

### Do Audio Maths or DLR Test Trainer have ads?

Neither Audio Maths nor DLR Test Trainer shows ads.

### Which is updated more often, Audio Maths or DLR Test Trainer?

Audio Maths ships an update every 2 weeks, and DLR Test Trainer daily. Most recently, Audio Maths was updated on June 11, 2026 and DLR Test Trainer on September 20, 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.*