# 歴史年号RTA vs Slango

The clearest difference is in-app purchases: 歴史年号RTA at none against Slango's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Slango sells 1 one-off in-app purchase. 歴史年号RTA asks for nothing beyond the download.

歴史年号RTA ships an update fortnightly, Slango every 9 days. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 歴史年号RTA | Slango |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 9 days** |
| Size | 76 MB | 40 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [GROWTH & GROWTH, LIMITED LIABILITY CO.](https://appshunter.io/developer/1785347143) | [Yuito Ukita](https://appshunter.io/developer/6779112243) |

## What reviewers say

### 歴史年号RTA

[App page](https://appshunter.io/ios/app/rta-ok/id6751521697)

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

**In-app purchases:** none


### Slango

[App page](https://appshunter.io/ios/app/slango/id6789338636)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Slangoプレミアム | $1.99 | one-time |


## Frequently asked questions

### Is 歴史年号RTA free?

歴史年号RTA is free to download, with no in-app purchases.

### Is Slango free?

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

### Do 歴史年号RTA or Slango have ads?

Both 歴史年号RTA and Slango show ads.

### Which is updated more often, 歴史年号RTA or Slango?

歴史年号RTA ships an update fortnightly, and Slango every 9 days. Most recently, 歴史年号RTA was updated on October 7, 2026 and Slango on October 21, 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.*