# Basal Metabolism vs Voice Affirmation Recorder

The clearest difference is in-app purchases: Voice Affirmation Recorder at none against Basal Metabolism's 1. Voice Affirmation Recorder also leads on update cadence (every 9 days vs every 6 weeks). Basal Metabolism's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Basal Metabolism sells 1 one-off in-app purchase. Voice Affirmation Recorder asks for nothing beyond the download.

Basal Metabolism ships an update every 6 weeks, Voice Affirmation Recorder every 9 days. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Basal Metabolism | Voice Affirmation Recorder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Size | 23 MB | 43 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [akira ohmachi](https://appshunter.io/developer/1338624340) | [Akihiro Tokuno](https://appshunter.io/developer/1882340721) |

## What reviewers say

### Basal Metabolism

[App page](https://appshunter.io/ios/app/basal-metabolism/id6752901762)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Voice Affirmation Recorder

[App page](https://appshunter.io/ios/app/voice-affirmation-recorder/id6760018607)

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

**In-app purchases:** none


## Frequently asked questions

### Is Basal Metabolism free?

Basal Metabolism is free to download, with in-app purchases available.

### Is Voice Affirmation Recorder free?

Voice Affirmation Recorder is free to download, with no in-app purchases.

### Do Basal Metabolism or Voice Affirmation Recorder have ads?

Neither Basal Metabolism nor Voice Affirmation Recorder shows ads.

### Which is updated more often, Basal Metabolism or Voice Affirmation Recorder?

Basal Metabolism ships an update every 6 weeks, and Voice Affirmation Recorder every 9 days. Most recently, Basal Metabolism was updated on October 11, 2026 and Voice Affirmation Recorder on October 16, 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.*