# ioda

> Scientific data analysis and visualization tool for physics and astronomy file formats. (iPhone/iPad app by Guy Barrand.)

- Source: https://appshunter.io/ios/app/ioda/id412436864 (this page in markdown: same URL + `.md`)
- Developer: [Guy Barrand](https://appshunter.io/developer/412436867)
- Category: Utilities
- Price: Free
- Rating: 3.00/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 64 MB
- Languages: American English
- Released: 2011-01-05
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ioda/id412436864/reviews.md

## What is ioda?

ioda should be read "IO-DA", for Input/Output and for Data Analysis. It is a scientific application that permits to read files at various formats as FITS used in astronomy, ROOT and AIDA used in high energy physics (HEP), HDF5 with the g4tools data schema semantic, JPG format to store images and FOG developed at CEA/Saclay (France) to describe the LHC/ATLAS geometry. ioda permits to browse these files and visualise some of their data. Since 1.14.x, ioda contains the gopaw (=Good Old PAW) core and can execute .kumac files.

## Key features

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

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/ioda/id412436864/reviews.md

### 1/5 — Horrible, non-intuitive interface and no manual

*2023-02-09*

I just need to view a FITS file while traveling with my iPad.  I cannot figure out how to access a file in my iCloud or Dropbox even with the file downloaded to the iPad.  There is no instruction manual in the app or online.  This should be the simplest task and after a solid 10 minutes of poking around (which is a lot longer than it sounds) I still cannot complete this basic task.  I welcome a response from the developer and would be happy to re-review if he can explain how to do this basic task.

### 5/5 — Cool app

*2013-10-28*

This app is really rad yo. It really helped me a lot when I was in a tight spot.

### 1/5 — Huh???

*2011-01-28*

This has to be the most confusing utterly useless app I've ever downloaded. The interface is cryptic and totally against Apple's HIG (human interface guidelines).

Terrible!

## Frequently asked questions about ioda

### What file formats does ioda support?

ioda supports a variety of scientific file formats including FITS (astronomy), ROOT and AIDA (high energy physics), HDF5, JPG for images, and FOG for geometry descriptions.

### Can ioda execute scripts?

Yes, since version 1.14.x, ioda includes the gopaw core and can execute .kumac files, which are script files.

### What is the primary purpose of ioda?

ioda is designed for reading and analyzing data from scientific files, allowing users to browse and visualize specific data points within these files.

### Is ioda available on Android devices?

Based on the provided data, ioda is supported on iPhone, iPad, and iPod, but compatibility with Android devices is not specified.

### How often is ioda updated?

The latest version of ioda is 1.15.0, which was last updated on June 17, 2018. The app has not received updates since then.

### What is the user rating for ioda?

ioda has a rating of 3.0 stars based on 2 ratings. This indicates a mixed reception from its user base.

### Does ioda have ads?

No, ioda does not contain advertisements. The application is free to use without any ad interruptions.

### What is the age rating for ioda?

ioda has an age rating of 4+, making it suitable for a wide range of users, including younger individuals interested in scientific data.

## Version history (last 5 releases)

### 1.15.0 — 2018-06-17

This app has been updated by Apple to display the Apple Watch app icon.

Read histograms and ntuples from HDF5 files at the g4tools data schema.

Include the gopaw core. ioda knows now the .kumac extension. The examples/paw_py_root menu item executes all the PAW examples (by using Python for the functions). 

edit plot panel : have [grid,inner_frame,bins[0]].[color,line_width] style items.

As examples, have g4b4.hdf5, [pawex1,10].kumac files in the resource directory. Have also a .bsg files with an LHCb event.

Have pages and code at https://gbarrand.github.io

### 1.13.1 — 2017-11-10

Build for iOS-11. No new features, but we remove the "LHC status" menu item, because CERN LHC server passed from http to https. (We hope to restore this feature soon).

### 1.13.0 — 2016-09-03

Have FITS reading for arm64. Read HepRep zip files. Improve the logic of "View All" : on a model thin in z, the camera were too close, now it is better. Have a "W/B" button in the left camera panel to change background color (White or Black). Have also a clear scene button.

### 1.12.0 — 2016-08-25

Read VRML and Inventor files. Read HepRep SLAC file format version 1 and 2. For HepRep we can display geometries found in these files both in wire-frame and solid. (If wanting solid, you have to set Params/solid first). See file/res *.iv, *.hiv, *.wrl, *.heprep for examples. When picking an object in the scene, there is now an "axes" menu item in the popup menu. It creates axes close to the picked object that permit to measure things around the object. The scale of the axes are given by the bounding box of the picked object. The axes are themselves pickable so that "popup/move" works for them so that someone can instrument them with draggers in order to move them close to something to measure. It can easily be tested for example with "examples/polyhedron" from the main menu.

### 1.9 — 2014-03-29

New GUI look and feel: round corners buttons and more visible labels at left of icons, improve the font. For fits file, handle PIXTYPE being HEALPIX; in this case a Mollweide projection is done.

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## More apps by Guy Barrand

- [pmx](https://appshunter.io/ios/app/pmx/id495740722)
- [ArcheryTune](https://appshunter.io/ios/app/archerytune/id884768763)

All apps by Guy Barrand: https://appshunter.io/developer/412436867

## Related topics

[ioda](https://appshunter.io/ios/topics/ioda) · [hadron](https://appshunter.io/ios/topics/hadron)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*