# AstroFITS vs AstroOcular

The clearest difference is in-app purchases: AstroOcular at none against AstroFITS's 1. On price, update cadence, ads 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. AstroOcular asks for nothing beyond the download.

AstroFITS ships an update monthly, AstroOcular every 5 weeks. The most recent releases landed on September 21, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | AstroFITS | AstroOcular |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/astrofits/id6756322104/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 61 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [yong chong loh](https://appshunter.io/developer/393466709) | [Aron Scolaro](https://appshunter.io/developer/931012278) |

## 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 |


### AstroOcular

[App page](https://appshunter.io/ios/app/astroocular/id6777107628)

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

**In-app purchases:** none


## Frequently asked questions

### Is AstroFITS free?

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

### Is AstroOcular free?

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

### Do AstroFITS or AstroOcular have ads?

Neither AstroFITS nor AstroOcular shows ads.

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

AstroFITS ships an update monthly, and AstroOcular every 5 weeks. Most recently, AstroFITS was updated on September 21, 2026 and AstroOcular on September 13, 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.*