# SQM Mobile vs AstroTool

The clearest difference is in-app purchases: SQM Mobile at none against AstroTool's 1. AstroTool's advantage is update cadence (every 9 days vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AstroTool sells 1 one-off in-app purchase. SQM Mobile asks for nothing beyond the download.

SQM Mobile ships an update every 4 weeks, AstroTool every 9 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SQM Mobile | AstroTool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Size | 42 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [GerSpatial](https://appshunter.io/developer/504662245) | [luciano cavazos](https://appshunter.io/developer/1273817106) |

## What reviewers say

### SQM Mobile

[App page](https://appshunter.io/ios/app/sqm-mobile/id6753923113)

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

**In-app purchases:** none


### AstroTool

[App page](https://appshunter.io/ios/app/astrotool-night-sky-planner/id6771275558)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AstroTool Premium Unlock | $4.99 | one-time |


## Frequently asked questions

### Is SQM Mobile free?

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

### Is AstroTool free?

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

### Do SQM Mobile or AstroTool have ads?

Neither SQM Mobile nor AstroTool shows ads.

### Which is updated more often, SQM Mobile or AstroTool?

SQM Mobile ships an update every 4 weeks, and AstroTool every 9 days. Most recently, SQM Mobile was updated on November 5, 2026 and AstroTool on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*