# VocabTrain vs RIKU

The clearest difference is update cadence: VocabTrain at every 2 days against RIKU's every 2 weeks. RIKU's advantage is iOS requirement (17.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. VocabTrain sells 5 one-off in-app purchases and RIKU sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

VocabTrain ships an update every 2 days, RIKU every 2 weeks. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | VocabTrain | RIKU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 6 MB | 35 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Andreas Grauf](https://appshunter.io/developer/1878952443) | [Martin Klaus](https://appshunter.io/developer/1895660348) |

## What reviewers say

### VocabTrain

[App page](https://appshunter.io/ios/app/vocabtrain/id6759484907)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 250 Card Pack | $0.99 | one-time |
| 500 Card Pack | $1.99 | one-time |
| 750 Card Pack | $2.99 | one-time |
| Vocab Train Pro | $3.99 | one-time |
| 1000 Card Pack | $3.99 | one-time |


### RIKU

[App page](https://appshunter.io/ios/app/riku/id6764147753)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Riku Premium monatlich | $1.99 | per month |
| Riku Premium jährlich | $12.99 | per year |


## Frequently asked questions

### Is VocabTrain free?

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

### Is RIKU free?

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

### Do VocabTrain or RIKU have ads?

Neither VocabTrain nor RIKU shows ads.

### Which is updated more often, VocabTrain or RIKU?

VocabTrain ships an update every 2 days, and RIKU every 2 weeks. Most recently, VocabTrain was updated on November 9, 2026 and RIKU on November 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.*