# OpenTutor vs Simple Vocab Trainer

The clearest difference is in-app purchases: OpenTutor at none against Simple Vocab Trainer's 5. OpenTutor also leads on update cadence (every 9 days vs every 6 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Simple Vocab Trainer sells 5 in-app purchases, starting at $4.99 per month. OpenTutor asks for nothing beyond the download.

OpenTutor ships an update every 9 days, Simple Vocab Trainer every 6 months. The most recent releases landed on October 27, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | OpenTutor | Simple Vocab Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 6 months |
| Size | 34 MB | 61 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Islam Music](https://appshunter.io/developer/1486093325) | [Laschinger Lukas Karl Konstantin, Schackmann Luca Markus GbR](https://appshunter.io/developer/1622047635) |

## What reviewers say

### OpenTutor

[App page](https://appshunter.io/ios/app/opentutor/id6444727590)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Vocab Trainer

[App page](https://appshunter.io/ios/app/simple-vocab-trainer/id6744446171)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $34.99 | per year |
| 200 Credits | $3.99 | one-time |
| 500 Credits | $6.99 | one-time |
| 1000 Credits | $8.99 | one-time |


## Frequently asked questions

### Is OpenTutor free?

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

### Is Simple Vocab Trainer free?

Simple Vocab Trainer is free to download, with in-app purchases available.

### Do OpenTutor or Simple Vocab Trainer have ads?

Neither OpenTutor nor Simple Vocab Trainer shows ads.

### Which is updated more often, OpenTutor or Simple Vocab Trainer?

OpenTutor ships an update every 9 days, and Simple Vocab Trainer every 6 months. Most recently, OpenTutor was updated on October 27, 2026 and Simple Vocab Trainer on November 6, 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.*