# TUNAGチャット vs Brainwave

The clearest difference is update cadence: Brainwave at every 9 days against TUNAGチャット's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

TUNAGチャット ships an update every 3 weeks, Brainwave every 9 days. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TUNAGチャット | Brainwave |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 87 MB | 49 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [stmn, inc.](https://appshunter.io/developer/1282324270) | [Jiku LLC](https://appshunter.io/developer/1822264751) |

## What reviewers say

### TUNAGチャット

[App page](https://appshunter.io/ios/app/tunag/id6670598681)

This app facilitates seamless information sharing among company or group members, separating work and personal communication. It offers channels, direct messages, voice and video calls with screen sharing, and file sharing capabilities.

**Highlights:** Public and private channels, Direct messaging, Voice and screen sharing calls, Group calls, File sharing (photos, videos, PDFs), Push notifications

**In-app purchases:** none


### Brainwave

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

**In-app purchases:** none


## Frequently asked questions

### Is TUNAGチャット free?

TUNAGチャット is free to download, with no in-app purchases.

### Is Brainwave free?

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

### Do TUNAGチャット or Brainwave have ads?

Neither TUNAGチャット nor Brainwave shows ads.

### Which is updated more often, TUNAGチャット or Brainwave?

TUNAGチャット ships an update every 3 weeks, and Brainwave every 9 days. Most recently, TUNAGチャット was updated on October 8, 2026 and Brainwave on October 25, 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.*