# 知っていると自慢できる雑学 vs iDev Tango

The clearest difference is update cadence: iDev Tango at every 2 days against 知っていると自慢できる雑学's every 13 months. 知っていると自慢できる雑学's advantage is iOS requirement (14.0 vs 17.6). 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.

知っていると自慢できる雑学 ships an update every 13 months, iDev Tango every 2 days. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 知っていると自慢できる雑学 | iDev Tango |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 13 months | **Every 2 days** |
| Size | 71 MB | 5 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [nullhouse Inc.](https://appshunter.io/developer/853672308) | [shohei yukawa](https://appshunter.io/developer/1825580540) |

## What reviewers say

### 知っていると自慢できる雑学

[App page](https://appshunter.io/ios/app/id1307937489)

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

**In-app purchases:** none


### iDev Tango

[App page](https://appshunter.io/ios/app/idev-tango/id6757414016)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 知っていると自慢できる雑学 free?

知っていると自慢できる雑学 is free to download, with no in-app purchases.

### Is iDev Tango free?

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

### Do 知っていると自慢できる雑学 or iDev Tango have ads?

Both 知っていると自慢できる雑学 and iDev Tango show ads.

### Which is updated more often, 知っていると自慢できる雑学 or iDev Tango?

知っていると自慢できる雑学 ships an update every 13 months, and iDev Tango every 2 days. Most recently, 知っていると自慢できる雑学 was updated on October 7, 2026 and iDev Tango 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.*