# StoichioAI vs DSE MistakeBook

StoichioAI and DSE MistakeBook are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

StoichioAI ships an update weekly, DSE MistakeBook every 2 weeks. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | StoichioAI | DSE MistakeBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 27 MB | 2 MB |
| Requires iOS | 17.1 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pang Ka Wai](https://appshunter.io/developer/797633008) | [Yin Man Cheung](https://appshunter.io/developer/6799562449) |

## What reviewers say

### StoichioAI

[App page](https://appshunter.io/ios/app/stoichioai/id6755667893)

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

**In-app purchases:** none


### DSE MistakeBook

[App page](https://appshunter.io/ios/app/dse-mistakebook/id6799562447)

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

**In-app purchases:** none


## Frequently asked questions

### Is StoichioAI free?

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

### Is DSE MistakeBook free?

DSE MistakeBook is free to download, with no in-app purchases.

### Do StoichioAI or DSE MistakeBook have ads?

Neither StoichioAI nor DSE MistakeBook shows ads.

### Which is updated more often, StoichioAI or DSE MistakeBook?

StoichioAI ships an update weekly, and DSE MistakeBook every 2 weeks. Most recently, StoichioAI was updated on October 25, 2026 and DSE MistakeBook on October 16, 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.*