# ChemSpark vs Memory Spots

The clearest difference is in-app purchases: Memory Spots at none against ChemSpark's 5. Memory Spots also leads on ads (none vs shown) and update cadence (every 5 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ChemSpark sells 5 one-off in-app purchases. Memory Spots asks for nothing beyond the download.

ChemSpark ships an update monthly, Memory Spots every 5 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ChemSpark | Memory Spots |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (8 ratings)](https://appshunter.io/ios/app/chemspark-chemistry-practice/id6746169230/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 53 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lojas Software Corp](https://appshunter.io/developer/1799458054) | [NAOTO FUJIMURA](https://appshunter.io/developer/1896752898) |

## What reviewers say

### 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 |


### Memory Spots

[App page](https://appshunter.io/ios/app/memory-spots/id6776513467)

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

**In-app purchases:** none


## Frequently asked questions

### Is ChemSpark free?

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

### Is Memory Spots free?

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

### Do ChemSpark or Memory Spots have ads?

ChemSpark shows ads; Memory Spots does not.

### Which is updated more often, ChemSpark or Memory Spots?

ChemSpark ships an update monthly, and Memory Spots every 5 days. Most recently, ChemSpark was updated on October 24, 2026 and Memory Spots on October 9, 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.*