# NumAndShape vs ChemSpark

The clearest difference is update cadence: ChemSpark at monthly against NumAndShape's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. NumAndShape sells 6 one-off in-app purchases and ChemSpark sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

NumAndShape ships an update every 2 months, ChemSpark monthly. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | NumAndShape | ChemSpark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/chemspark-chemistry-practice/id6746169230/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 43 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ken morobayashi](https://appshunter.io/developer/954811891) | [Lojas Software Corp](https://appshunter.io/developer/1799458054) |

## What reviewers say

### NumAndShape

[App page](https://appshunter.io/ios/app/numandshape/id6468994873)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| prime number | $0.49 | one-time |
| power | $0.49 | one-time |
| per hour | $0.49 | one-time |
| binary number | $0.49 | one-time |
| sin cos tan | $0.49 | one-time |
| NumAndShape Unlimited | $1.99 | one-time |


### ChemSpark

[App page](https://appshunter.io/ios/app/chemspark-chemistry-practice/id6746169230)

Master chemistry concepts and prepare for exams with this comprehensive study tool. It offers a dynamic way to test knowledge across various topics, featuring diverse question types, visual learning aids, and detailed feedback to track progress and improve understanding.

**Highlights:** Extensive question bank with varying difficulty, Multiple question types (multiple-choice, fill-in-the-blank), Visual learning aids with images and diagrams, Detailed feedback and answer explanations, Structured learning by subject and topic, Progress tracking and score monitoring, Interactive testing interface

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Test Tube of Hints (25) | $0.99 | one-time |
| Combustion Skips (5) | $0.99 | one-time |
| Atomic Skips (15) | $1.99 | one-time |
| Beaker of Hints (60) | $2.99 | one-time |
| Flask of Hints (150) | $4.99 | one-time |


## Frequently asked questions

### Is NumAndShape free?

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

### Is ChemSpark free?

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

### Do NumAndShape or ChemSpark have ads?

Both NumAndShape and ChemSpark show ads.

### Which is updated more often, NumAndShape or ChemSpark?

NumAndShape ships an update every 2 months, and ChemSpark monthly. Most recently, NumAndShape was updated on October 8, 2026 and ChemSpark on October 18, 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.*