# April Buff vs ROBOKAMU Premium(Bluetooth)

The clearest difference is update cadence: ROBOKAMU Premium(Bluetooth) at every 2 days against April Buff's every 5 weeks. April Buff's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

April Buff ships an update every 5 weeks, ROBOKAMU Premium(Bluetooth) every 2 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | April Buff | ROBOKAMU Premium(Bluetooth) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7 ratings)](https://appshunter.io/ios/app/april-buff/id1498580532/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 72.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 208 MB | 8 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CREVERSE, Inc.](https://appshunter.io/developer/739652504) | [에이티로봇](https://appshunter.io/developer/1793800937) |

## What reviewers say

### April Buff

[App page](https://appshunter.io/ios/app/april-buff/id1498580532)

This app uses augmented reality to make learning English vocabulary fun for elementary students. It offers interactive games, quizzes, and progress tracking linked to a specific curriculum. Users can collect word cards and compete nationally.

**Highlights:** AR-based vocabulary study, Interactive games and quizzes, Collect word and chunk cards, National ranking system, Scan textbook to start games, Linked to Learning Portal

**Features:** Vision Pro support

**In-app purchases:** none


### ROBOKAMU Premium(Bluetooth)

[App page](https://appshunter.io/ios/app/robokamu-premiumbluetooth/id6741330016)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is April Buff free?

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

### Is ROBOKAMU Premium(Bluetooth) free?

ROBOKAMU Premium(Bluetooth) is free to download, with no in-app purchases.

### Do April Buff or ROBOKAMU Premium(Bluetooth) have ads?

Neither April Buff nor ROBOKAMU Premium(Bluetooth) shows ads.

### Which is updated more often, April Buff or ROBOKAMU Premium(Bluetooth)?

April Buff ships an update every 5 weeks, and ROBOKAMU Premium(Bluetooth) every 2 days. Most recently, April Buff was updated on October 15, 2026 and ROBOKAMU Premium(Bluetooth) on October 5, 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.*