# Brainwave vs SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録

The clearest difference is in-app purchases: Brainwave at none against SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録's 8. Brainwave also leads on ads (none vs shown) and iOS requirement (15.1 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 sells 8 in-app purchases, starting at $2.99 per month. Brainwave asks for nothing beyond the download.

Brainwave ships an update every 9 days, SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 every 2 weeks. The most recent releases landed on September 9, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Brainwave | SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 49 MB | 110 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jiku LLC](https://appshunter.io/developer/1822264751) | [Ryogo Owashi](https://appshunter.io/developer/1852190898) |

## What reviewers say

### Brainwave

[App page](https://appshunter.io/ios/app/brainwave-ai/id6747668001)

**In-app purchases:** none


### SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録

[App page](https://appshunter.io/ios/app/sideflow/id6801014804)

This app helps you focus by combining a timer with your favorite music from Apple Music or Spotify. It visually represents your focus sessions as collectible tickets and offers features to block distracting apps and track your progress over time.

**Highlights:** Focus timer with music integration (Apple Music/Spotify), App and website blocking during focus sessions, Focus sessions visualized as collectible tickets, Progress tracking and analytics (weekly, monthly, yearly), Customizable timer interface with rewards, Social features to connect with friends' focus progress

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SideFlow Premium | $2.99 | per month |
| SideFlow Premium | $17.99 | per year |
| SideFlow Premium | $22.99 | per year |
| SideFlow 120コイン | $0.99 | one-time |
| SideFlow 400コイン | $2.99 | one-time |
| SideFlow 900コイン | $5.99 | one-time |
| プレーヤーパーツ 3個 | $5.99 | one-time |
| SideFlow 2000コイン | $11.99 | one-time |


## Frequently asked questions

### Is Brainwave free?

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

### Is SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 free?

SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 is free to download, with in-app purchases available.

### Do Brainwave or SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 have ads?

SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 shows ads; Brainwave does not.

### Which is updated more often, Brainwave or SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録?

Brainwave ships an update every 9 days, and SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 every 2 weeks. Most recently, Brainwave was updated on September 9, 2026 and SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 on September 27, 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.*