# StoichioAI vs Star Explorer

The clearest difference is in-app purchases: StoichioAI at none against Star Explorer's 4. Star Explorer's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Star Explorer sells 4 in-app purchases, starting at $1.99 per month. StoichioAI asks for nothing beyond the download.

StoichioAI ships an update weekly, Star Explorer every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | StoichioAI | Star Explorer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Size | 27 MB | 23 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) | [Beijing XingheBit Science & Technology Development Co., Ltd.](https://appshunter.io/developer/1882505330) |

## What reviewers say

### StoichioAI

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

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

**In-app purchases:** none


### Star Explorer

[App page](https://appshunter.io/ios/app/star-explorer-night-sky-map/id6799640893)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 云端 AI 月度订阅 | $1.99 | per month |
| 云端 AI 年度订阅 | $9.99 | per year |
| 观测工具永久解锁 | $3.99 | one-time |
| Star Explorer Pro 买断 | $6.99 | one-time |


## Frequently asked questions

### Is StoichioAI free?

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

### Is Star Explorer free?

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

### Do StoichioAI or Star Explorer have ads?

Neither StoichioAI nor Star Explorer shows ads.

### Which is updated more often, StoichioAI or Star Explorer?

StoichioAI ships an update weekly, and Star Explorer every 3 days. Most recently, StoichioAI was updated on October 24, 2026 and Star Explorer on October 25, 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.*