# AstroFITS vs +Frames

The clearest difference is rating: +Frames at 5.0 against AstroFITS's 2.0. +Frames also leads on update cadence (every 8 days vs monthly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. AstroFITS sells 1 in-app purchase, starting at $0.99 per year and +Frames sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

+Frames holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

AstroFITS ships an update monthly, +Frames every 8 days. The most recent releases landed on September 21, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | AstroFITS | +Frames |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/astrofits/id6756322104/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/plus-frames/id6787722445/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 61 MB | 743 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [yong chong loh](https://appshunter.io/developer/393466709) | [LEVIN GIDEON MERANER](https://appshunter.io/developer/6787722447) |

## 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 |


### +Frames

[App page](https://appshunter.io/ios/app/plus-frames/id6787722445)

This app helps astrophotographers plan their shots by providing a sky atlas, equipment-specific target recommendations, and field-of-view previews. It also offers an AI assistant for personalized advice and project tracking for deep-sky objects.

**Highlights:** Sky atlas with millions of stars and deep-sky objects, Ranked target recommendations based on equipment and sky conditions, True field-of-view preview for cameras and eyepieces, Mosaic planning up to 4x4, Project tracking for exposures and filters, AI assistant for personalized astrophotography advice, Augmented Reality (AR) mode for target location

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is AstroFITS free?

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

### Is +Frames free?

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

### Which has better reviews, AstroFITS or +Frames?

+Frames is rated higher. AstroFITS averages 2.0 out of 5 from 1 ratings, while +Frames averages 5.0 from 1 ratings.

### Do AstroFITS or +Frames have ads?

Neither AstroFITS nor +Frames shows ads.

### Which is updated more often, AstroFITS or +Frames?

AstroFITS ships an update monthly, and +Frames every 8 days. Most recently, AstroFITS was updated on September 21, 2026 and +Frames on September 26, 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.*