# kMath vs NOBOOK Lab

The clearest difference is rating: kMath at 4.3 against NOBOOK Lab's 3.0. On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. kMath sells 1 in-app purchase, starting at $14.99 per 3 months and NOBOOK Lab sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

kMath holds the better App Store score, 4.3 against 3.0. Both are backed by a comparable volume of ratings — 6 and 6 respectively.

kMath ships an update every 3 weeks, NOBOOK Lab monthly. The most recent releases landed on September 3, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | kMath | NOBOOK Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/kmath-ikmc-kangaroo-math/id1497065843/reviews)** | [3.0 (6 ratings)](https://appshunter.io/ios/app/nobook-lab/id6742533495/reviews) |
| Number of ratings | 6 | 6 |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 69 MB | 83 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Yen Nguyen](https://appshunter.io/developer/1370538562) | [BeiJing LeBu Educational Technology Co., Ltd.](https://appshunter.io/developer/943806906) |

## What reviewers say

### kMath

[App page](https://appshunter.io/ios/app/kmath-ikmc-kangaroo-math/id1497065843)

Prepare for the International Kangaroo Mathematics Contest with thousands of practice questions and explanations. Covers six levels from grade 1 to 12, with new content updated monthly. Offers an optional subscription for enhanced features.

**Highlights:** Thousands of practice questions, Detailed explanations, Six learning levels (grade 1-12), Monthly content updates, Auto-renewing subscription option, Progress tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Member | $14.99 | per 3 months |


### NOBOOK Lab

[App page](https://appshunter.io/ios/app/nobook-lab/id6742533495)

This app offers a virtual laboratory experience with over 1000 DIY experimental equipment pieces and a library of 700+ high-quality experiments. It allows for free combination of equipment to observe phenomena and explore scientific concepts in physics and chemistry.

**Highlights:** 1000+ DIY experimental equipment, Interactive learning mode, 8 major engine algorithms for free combination, Observe experimental phenomena instantly, 700+ high-quality experiments, Physics and chemistry modules, Search experiments by knowledge points

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GCSE Chemistry Month Access | $15.00 | one-time |
| A-Level Physics Month Access | $15.00 | one-time |
| GCSE Physics Month Access | $15.00 | one-time |
| A-Level Chem Month Access | $15.00 | one-time |
| A-Level Chem Year Access | $150.00 | one-time |
| GCSE Chemistry Year Access | $150.00 | one-time |
| GCSE Physics Year Access | $150.00 | one-time |
| A-Level Physics Year Access | $150.00 | one-time |


## Frequently asked questions

### Is kMath free?

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

### Is NOBOOK Lab free?

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

### Which has better reviews, kMath or NOBOOK Lab?

kMath is rated higher. kMath averages 4.3 out of 5 from 6 ratings, while NOBOOK Lab averages 3.0 from 6 ratings.

### Do kMath or NOBOOK Lab have ads?

Neither kMath nor NOBOOK Lab shows ads.

### Which is updated more often, kMath or NOBOOK Lab?

kMath ships an update every 3 weeks, and NOBOOK Lab monthly. Most recently, kMath was updated on September 3, 2026 and NOBOOK Lab on September 15, 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.*