# AstroPup View vs GuideWatch

The clearest difference is iOS requirement: AstroPup View at 18.0 against GuideWatch's 26.5. On price, update cadence, ads and in-app purchases there is nothing between them.

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

AstroPup View ships an update every 2 weeks, GuideWatch fortnightly. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AstroPup View | GuideWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/astropup-view/id6752028730/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free | — |
| Size | 21 MB | 4 MB |
| Requires iOS | **18.0** | 26.5 |
| Devices | **iPhone, iPad, Mac** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Aaron Freimark](https://appshunter.io/developer/1533614349) | [Cambridge AI Works Ltd.](https://appshunter.io/developer/6791601439) |

## What reviewers say

### AstroPup View

[App page](https://appshunter.io/ios/app/astropup-view/id6752028730)

Easily manage and view astronomical image files like FITS and XISF. Offers GPU-accelerated rendering, automatic stretching, and QuickLook integration for a seamless user experience. Create icons and display smart metadata directly from your files.

**Highlights:** FITS and XISF format support, GPU-accelerated rendering, Automatic advanced stretching, QuickLook integration, Icon creation, Smart metadata display

**In-app purchases:** none


### GuideWatch

[App page](https://appshunter.io/ios/app/guidewatch/id6792355618)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AstroPup View free?

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

### Is GuideWatch free?

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

### Do AstroPup View or GuideWatch have ads?

Neither AstroPup View nor GuideWatch shows ads.

### Which is updated more often, AstroPup View or GuideWatch?

AstroPup View ships an update every 2 weeks, and GuideWatch fortnightly. Most recently, AstroPup View was updated on October 14, 2026 and GuideWatch on October 24, 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.*