# GRE Vocabulary Builder vs MM Learning Lab

The clearest difference is in-app purchases: GRE Vocabulary Builder at none against MM Learning Lab's 1. GRE Vocabulary Builder also leads on ratings volume (113 vs 1) and iOS requirement (13.0 vs 16.6). MM Learning Lab's advantage is update cadence (weekly vs every 4 months) and rating (5.0 vs 4.6). On price, ads and device support there is nothing between them.

Both are free to download. MM Learning Lab sells 1 in-app purchase, starting at $1.99 per month. GRE Vocabulary Builder asks for nothing beyond the download.

MM Learning Lab holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: GRE Vocabulary Builder has 113 ratings behind it against 1, so its average is the more settled of the two.

GRE Vocabulary Builder ships an update every 4 months, MM Learning Lab weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | GRE Vocabulary Builder | MM Learning Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (113 ratings)](https://appshunter.io/ios/app/gre-vocabulary-builder/id1609463254/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mm-learning-lab/id6745541722/reviews)** |
| Number of ratings | **113** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 71 MB | 43 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Reev Tech Inc.](https://appshunter.io/developer/1226698203) | [ISW Technologies LLC](https://appshunter.io/developer/1819593110) |

## What reviewers say

### GRE Vocabulary Builder

[App page](https://appshunter.io/ios/app/gre-vocabulary-builder/id1609463254)

Prepare for the GRE with over 1,300 essential words and a comprehensive study guide. Interactive flashcards, audio lessons, and progress tracking help you master vocabulary and understand the test structure. Study offline anytime, anywhere.

**Highlights:** 1300+ GRE words, Interactive flashcards, GRE study guide, Audio-enabled lessons, Progress tracking, Offline mode

**Features:** macOS Compatibility

**In-app purchases:** none


### MM Learning Lab

[App page](https://appshunter.io/ios/app/mm-learning-lab/id6745541722)

This app uses AI to engage children in learning through interactive voice chat, playful games, and personalized progress tracking. Kids can ask questions and receive spoken answers, play educational games, and enjoy a safe, ad-free environment designed for young learners.

**Highlights:** AI voice chat and conversation, Speech-to-text for questions, Chess with AI commentary, Classic learning games, Multiple child profiles, Offline progress tracking

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| M&M Learning Premium | $1.99 | per month |


## Frequently asked questions

### Is GRE Vocabulary Builder free?

GRE Vocabulary Builder is free to download, with no in-app purchases.

### Is MM Learning Lab free?

MM Learning Lab is free to download, with in-app purchases available.

### Which has better reviews, GRE Vocabulary Builder or MM Learning Lab?

MM Learning Lab is rated higher. GRE Vocabulary Builder averages 4.6 out of 5 from 113 ratings, while MM Learning Lab averages 5.0 from 1 ratings.

### Do GRE Vocabulary Builder or MM Learning Lab have ads?

Neither GRE Vocabulary Builder nor MM Learning Lab shows ads.

### Which is updated more often, GRE Vocabulary Builder or MM Learning Lab?

GRE Vocabulary Builder ships an update every 4 months, and MM Learning Lab weekly. Most recently, GRE Vocabulary Builder was updated on October 24, 2026 and MM Learning Lab on October 24, 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.*