# Math Masters Jr. — Study Smarter, Learn Faster!

> Study Smarter, Learn Faster! (iPhone/iPad app by SlimStampen B.V..)

- Source: https://appshunter.io/ios/app/math-masters-jr/id6472655106 (this page in markdown: same URL + `.md`)
- Developer: [SlimStampen B.V.](https://appshunter.io/developer/1717406198)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 40 MB
- Languages: Dutch, English, French, German, Spanish
- Released: 2024-01-17
- Data updated: 2026-02-26
- User reviews in markdown: https://appshunter.io/ios/app/math-masters-jr/id6472655106/reviews.md

## What is Math Masters Jr.?

This app makes math unforgettable. Never too easy, never too hard. Our award-winning technology adapts each lesson to fit and raise your child's capabilities. Designed by cognitive scientists, co-created with teachers, Math Masters Jr. is based on cutting-edge research in memory and learning.


Math Masters Jr. helps children achieve rapid recall of essential math facts, using a knowledge-tracing algorithm that makes practice both effective and engaging. Tested with over 500 children in real classrooms, it’s a scientifically proven way to strengthen foundational math skills for Grades 2, 3 & 4.

— WHAT WE TEACH —

Grade 2: Addition, subtraction, multiplication preparation, and place value.

Grade 3: Times tables, division, large numbers, and fractions.

Grade 4: Advanced arithmetic, working with large numbers, and more fractions.

— HOW WE TEACH —

Personalized: Adaptive lessons that adjust to your child’s progress and pace.

Tested & Trusted: Tested in over 11 classrooms with 500+ children.

Science-based: Memory technology designed by neuroscientists for real retention.

Carefully Gamified: A balance of learning and play that keeps kids engaged.

Encouraging: Motivating and child-friendly feedback provided by Mr. Mouse

— ACHIEVEMENTS —

Winner of the Academic Startup Competition 2023 (Safe and Inclusive Society)

Rated 4.35 / 5 by over 500 children for usability & learning efficacy, in a scientific study

— PRIVACY —

MemoryLab takes children’s privacy seriously and ensures that this app is compliant with data privacy laws: the GDPR. If you would like to learn more on what information we collect and how we use it, please read our privacy policy: https://memorylab.nl/privacy-policy-tafeltrainer

The first lesson of each subject is free, but additional paid content is available. All material can be unlocked in one monthly / yearly subscription or lifetime purchase.

The standard Apple Terms of Use apply to this app:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

STUDY SMARTER & LEARN FASTER - START LEARNING WITH MEMORYLAB!

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Month Subscription All Grades | $3.99 | per month |
| Yearly Subscription Grade 3 | $7.99 | per year |
| Yearly Subscription all Grades | $14.99 | per year |
| Yearly Subscription Grade 2 | $6.99 | per year |
| Monthly Subscription Grade 4 | $0.99 | per month |
| Monthly Subscription Grade 3 | $0.99 | per month |
| Yearly Subscription Grade 4 | $6.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime, all Grades | $24.99 | one-time |
| Unlock Grade 2 Forever | $9.99 | one-time |
| Unlock Grade 3 Forever | $9.99 | one-time |
| Unlock Grade 4 Forever | $9.99 | one-time |



## Version history (last 5 releases)

### 2.0.3 — 2025-03-26

Accessibility Adjustments
— Larger buttons for little fingers
— Larger text for easier reading

Simpler Subscriptions
— Unlock all lessons across all grades at once
— Easier for families with multiple learners
— Curious kids can explore and try new challenges

### 2.0.2 — 2025-02-24

- Bug fix for the grade 3 yearly subscription
- Bug fix for stopping the timer during practice

### 2.0.1 — 2025-02-05

Minor language updates

### 2.0 — 2025-01-30

- New math learning materials; 40+ new lessons, ~1000 new exercises.
- Categorised math material for 7 to 10 year olds.
- Support for additions, subtractions, divisions, story sums, fractions, comparisons and more.
- Progress bar to track and motivate learning progress.

### 1.2.1 — 2024-06-03

- Fixed a few small issues

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-02-26.*