# AstroFITS vs FixedFocus

The clearest difference is update cadence: AstroFITS at monthly against FixedFocus's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AstroFITS sells 1 in-app purchase, starting at $0.99 per year and FixedFocus sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AstroFITS ships an update monthly, FixedFocus every 2 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | AstroFITS | FixedFocus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/astrofits/id6756322104/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 61 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [yong chong loh](https://appshunter.io/developer/393466709) | [Lu Cheng Wei](https://appshunter.io/developer/1119072701) |

## What reviewers say

### AstroFITS

[App page](https://appshunter.io/ios/app/astrofits/id6756322104)

This app allows users to quickly open and view FITS files on iOS devices using GPU acceleration. It features automatic image stretching and supports various color formats and bit depths, making astronomical image analysis more accessible.

**Highlights:** Open FITS files quickly on iOS, GPU accelerated image processing, Automatic image stretching, Supports RGB and gray color, Handles multiple BITPIX formats, Save adjusted images to Photos

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Subscription | $0.99 | per year |


### FixedFocus

[App page](https://appshunter.io/ios/app/fixedfocus-digiscoping-cam/id6761117765)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FixedFocus Pro | $3.99 | one-time |


## Frequently asked questions

### Is AstroFITS free?

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

### Is FixedFocus free?

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

### Do AstroFITS or FixedFocus have ads?

Neither AstroFITS nor FixedFocus shows ads.

### Which is updated more often, AstroFITS or FixedFocus?

AstroFITS ships an update monthly, and FixedFocus every 2 months. Most recently, AstroFITS was updated on September 21, 2026 and FixedFocus on September 17, 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.*