# CassiniMIMI

> NASA Cassini mission data explorer for Saturn's energetic particle environment. (iPhone/iPad app by Johns Hopkins University Applied Physics Laboratory.)

- Source: https://appshunter.io/ios/app/cassinimimi/id1153077273 (this page in markdown: same URL + `.md`)
- Developer: [Johns Hopkins University Applied Physics Laboratory](https://appshunter.io/developer/473217885)
- Category: Education
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 19 MB
- Languages: American English
- Released: 2016-12-05
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/cassinimimi/id1153077273/reviews.md

## What is CassiniMIMI?

NASA’s Cassini mission to Saturn has provided a unique opportunity for the Magnetospheric IMaging Instruments (MIMI) to study the energetic charged particle environment, and obtain images of Saturn using Energetic Neutral Atom (ENA) imaging. There is a rich dataset of spectrograms, plots, movies, and images that are now accessible via a dedicated iOS app.

Among the data products within the MIMI suite that are viewable through the app, include the ENA images of Saturn taken with the Ion and Neutral CAmera (INCA), and spectrograms and line plots from the Low Energy Magnetospheric Measurement System (LEMMS) and CHarge Energy Mass Spectrometer (CHEMS) particle detectors. The instrument health and safety data are restricted to Cassini team members, while the calibrated science data are available to all.

The CassiniMIMI app provides easy access to some of Cassini browse products that are currently in NASA’s publically accessible Planetary Data System (PDS). For some products, the public is now able to see the most up-to-date plots produced on a daily basis. Also, the public now has access to new MIMI data products that are only in the process of being released to PDS.

The publically available browse products are selectable by source, type, date, style, plots, and movies.  Click on the link below to checkout a description of the public menu selections, highlights of the display, samples of public plots and movies, what’s shown in the icon, and links to supporting links, including the Cassini MIMI website, instrument user’s guide, and archive at PDS.

## Key features

- Energetic charged particle environment study
- Energetic Neutral Atom (ENA) imaging of Saturn
- Spectrograms and plots from particle detectors
- Access to NASA's Planetary Data System (PDS)
- Daily updated plots and movies
- Selectable data by source, type, date, and style

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/cassinimimi/id1153077273/reviews.md

### 5/5 — Describe

*2019-12-26*

Please Add descriptions of what you’re doing, because it’s just random weird charts to us.

Also, can u detect fleets with these instruments?

## Frequently asked questions about CassiniMIMI

### What is CassiniMIMI?

CassiniMIMI is an iOS application that provides access to data and imagery from NASA's Cassini mission to Saturn, specifically focusing on the Magnetospheric Imaging Instruments (MIMI).

### What kind of data can I find in CassiniMIMI?

You can find energetic charged particle data, Energetic Neutral Atom (ENA) images of Saturn, spectrograms, line plots from particle detectors like LEMMS and CHEMS, and movies.

### Is CassiniMIMI free to download?

Yes, CassiniMIMI is available for free on the App Store. It does not have any in-app purchases or advertisements.

### What devices does CassiniMIMI support?

CassiniMIMI is supported on iPhone, iPad, and iPod touch devices.

### How often is the data in CassiniMIMI updated?

For some products, the app provides the most up-to-date plots produced on a daily basis. New MIMI data products are also being released.

### Who developed CassiniMIMI?

CassiniMIMI was developed by Johns Hopkins University Applied Physics Laboratory, the team responsible for the Cassini mission's Magnetospheric IMaging Instruments.

### What is the age rating for CassiniMIMI?

CassiniMIMI has an age rating of 4+, making it suitable for a wide audience interested in space exploration.

### Where can I find more information about the Cassini mission?

The app provides links to supporting resources, including the Cassini MIMI website, the instrument user's guide, and the Planetary Data System (PDS) archive.

## Version history (last 2 releases)

### 1.1 — 2016-12-12

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

Enhancements:

- Energetic Neutral Atom Movies are added to both the public and team menus.  On the movie screen, a double tap toggles between an enlarged and a normal sized image, and a single tap brings the progress bar in and out of view.  The movie legend is best viewed in iPhone’s landscape orientation, enlarged and without the progress bar.
- The forward arrows and backward arrows now skips over days with no plots or movies.  You can still see what is on a specific day by selecting the date on the date wheel.
- In iPhone’s landscape orientation, a tap will make the header appear or disappear.  Besides giving you the date, interval, number of plots, and page number, the header enables you to search for the previous or next plot.
- LEMMS: PHA Spectrograms and Multiple Sensors: Pressures plots are added back into the APL Public Daily Plots menu.
- A pop up message appears if there is no plot or movie, before or beyond a date.
- When there is no plot, a list of possible reasons is now shown on the screen.
- In poor network conditions, error messages are shown to the user

### 1.0 — 2016-12-05

No release notes.

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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 2026-06-01.*