# 推しダイエット vs Brainwave

The clearest difference is in-app purchases: Brainwave at none against 推しダイエット's 1. Brainwave also leads on update cadence (weekly vs monthly). 推しダイエット's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. 推しダイエット sells 1 in-app purchase, starting at $2.99 per month. Brainwave asks for nothing beyond the download.

推しダイエット ships an update monthly, Brainwave weekly. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 推しダイエット | Brainwave |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 25 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [shigeki suzuki](https://appshunter.io/developer/1492704516) | [Morio Kawabe](https://appshunter.io/developer/1610338878) |

## What reviewers say

### 推しダイエット

[App page](https://appshunter.io/ios/app/id6448716540)

This app helps you track your weight and body fat with a fun, personalized approach. Set your favorite idol as your background and icon, and receive encouraging notifications to stay motivated on your fitness journey. It features simple input, clear graphs, and customizable themes for a seamless recording experience.

**Highlights:** Customizable idol background and icon, Personalized motivational messages, Simple weight, body fat, and BMI input, List-style calendar for easy viewing, Intuitive progress graphs, Multiple theme color options, Input reminder notifications

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 推しダイエットのサブスクリプション | $2.99 | per month |


### Brainwave

[App page](https://appshunter.io/ios/app/brainwave-voice-journal/id6754695758)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 推しダイエット free?

推しダイエット is free to download, with in-app purchases available.

### Is Brainwave free?

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

### Do 推しダイエット or Brainwave have ads?

Both 推しダイエット and Brainwave show ads.

### Which is updated more often, 推しダイエット or Brainwave?

推しダイエット ships an update monthly, and Brainwave weekly. Most recently, 推しダイエット was updated on October 15, 2026 and Brainwave on October 10, 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.*