# SoHO Viewer vs CassiniMIMI

The clearest difference is rating: CassiniMIMI at 5.0 against SoHO Viewer's 3.4. CassiniMIMI also leads on review sentiment (100% vs 69%) and update cadence (weekly vs every 2 months). SoHO Viewer's advantage is ratings volume (19 vs 2). 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.

CassiniMIMI holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: SoHO Viewer has 19 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 69% of SoHO Viewer's written reviews are positive against 100% of CassiniMIMI's.

SoHO Viewer ships an update every 2 months, CassiniMIMI weekly. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SoHO Viewer | CassiniMIMI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (19 ratings)](https://appshunter.io/ios/app/soho-viewer/id356679615/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cassinimimi/id1153077273/reviews)** |
| Number of ratings | **19** | 2 |
| Positive reviews | 69.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 5 MB | 19 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jérôme Diaz](https://appshunter.io/developer/334987620) | [Johns Hopkins University Applied Physics Laboratory](https://appshunter.io/developer/473217885) |

## What reviewers say

### SoHO Viewer

[App page](https://appshunter.io/ios/app/soho-viewer/id356679615)

Access and view the latest images from the Solar and Heliospheric Observatory (SoHO). Receive push notifications when new images are available, keeping you updated on solar activity. This app is a convenient tool for anyone interested in space imagery.

**Highlights:** Download latest SoHO images, Display solar images, Push notifications for new images, Badge notification for new images, Image courtesy of SOHO consortium

**Features:** macOS Compatibility

**In-app purchases:** none


### CassiniMIMI

[App page](https://appshunter.io/ios/app/cassinimimi/id1153077273)

Explore stunning images and data from NASA's Cassini mission to Saturn. This app provides access to energetic particle data, ENA images, and spectrograms from Saturn's magnetosphere. Discover new scientific releases and browse daily updated plots and movies.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SoHO Viewer free?

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

### Is CassiniMIMI free?

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

### Which has better reviews, SoHO Viewer or CassiniMIMI?

CassiniMIMI is rated higher. SoHO Viewer averages 3.4 out of 5 from 19 ratings, while CassiniMIMI averages 5.0 from 2 ratings.

### Do SoHO Viewer or CassiniMIMI have ads?

Neither SoHO Viewer nor CassiniMIMI shows ads.

### Which is updated more often, SoHO Viewer or CassiniMIMI?

SoHO Viewer ships an update every 2 months, and CassiniMIMI weekly. Most recently, SoHO Viewer was updated on October 13, 2026 and CassiniMIMI on October 8, 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.*