# TUNAGチャット vs 40SEC

The clearest difference is in-app purchases: TUNAGチャット at none against 40SEC's 4. 40SEC's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. 40SEC sells 4 one-off in-app purchases. TUNAGチャット asks for nothing beyond the download.

TUNAGチャット ships an update every 3 weeks, 40SEC weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TUNAGチャット | 40SEC |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 86 MB | 23 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [stmn, inc.](https://appshunter.io/developer/1282324270) | [Daisaku Harasaki](https://appshunter.io/developer/1222906711) |

## What reviewers say

### TUNAGチャット

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

This app facilitates seamless information sharing among colleagues and group members, separating work and personal communications. 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


### 40SEC

[App page](https://appshunter.io/ios/app/40sec-todo/id6758890016)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Premium | $2.99 | one-time |
| Support Tip (Medium) | $2.99 | one-time |
| Support Tip (Large) | $5.99 | one-time |


## 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 40SEC free?

40SEC is free to download, with in-app purchases available.

### Do TUNAGチャット or 40SEC have ads?

Neither TUNAGチャット nor 40SEC shows ads.

### Which is updated more often, TUNAGチャット or 40SEC?

TUNAGチャット ships an update every 3 weeks, and 40SEC weekly. Most recently, TUNAGチャット was updated on November 5, 2026 and 40SEC on October 31, 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.*