# ioda vs Touch

The clearest difference is rating: Touch at 4.7 against ioda's 3.0. Touch also leads on review sentiment (75% vs 33%) and update cadence (fortnightly vs every 5 months). ioda's advantage is iOS requirement (8.0 vs 16.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Touch holds the better App Store score, 4.7 against 3.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 33% of ioda's written reviews are positive against 75% of Touch's.

ioda ships an update every 5 months, Touch fortnightly. The most recent releases landed on September 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ioda | Touch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/ioda/id412436864/reviews) | **[4.7 (7 ratings)](https://appshunter.io/ios/app/touch-n-stars/id6744902856/reviews)** |
| Number of ratings | 2 | **7** |
| Positive reviews | 33.3% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 64 MB | 41 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Guy Barrand](https://appshunter.io/developer/412436867) | [Johannes Maier](https://appshunter.io/developer/1809834961) |

## What reviewers say

### ioda

[App page](https://appshunter.io/ios/app/ioda/id412436864)

This scientific application allows users to read and visualize data from various file formats commonly used in astronomy and high-energy physics. It supports formats like FITS, ROOT, HDF5, JPG, and FOG, and can execute specific script files.

**Highlights:** Read FITS, ROOT, HDF5, JPG, and FOG files, Browse and visualize data, Execute .kumac files, Includes gopaw core, Supports various scientific data schemas

**Features:** macOS Compatibility

**In-app purchases:** none


### Touch

[App page](https://appshunter.io/ios/app/touch-n-stars/id6744902856)

Control your astrophotography sessions remotely from your mobile device or Mac. Manage imaging, focus, guiding, and polar alignment. This open-source tool enhances your workflow without ads or in-app purchases.

**Highlights:** Remote imaging session launch, Focus control, Guiding performance monitoring, Three Point Polar Alignment, Connected device control, Open source

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ioda free?

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

### Is Touch free?

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

### Which has better reviews, ioda or Touch?

Touch is rated higher. ioda averages 3.0 out of 5 from 2 ratings, while Touch averages 4.7 from 7 ratings.

### Do ioda or Touch have ads?

Neither ioda nor Touch shows ads.

### Which is updated more often, ioda or Touch?

ioda ships an update every 5 months, and Touch fortnightly. Most recently, ioda was updated on September 27, 2026 and Touch on October 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.*