Comparison

CassiniMIMI vs Pocket Planets

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CassiniMIMI

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
Read full description

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.

About

Pocket Planets

Explore our solar system with detailed information on planets, moons, and astronauts. Track who is currently in space and receive notifications for new launches. Access NASA images and compare celestial body characteristics.

Highlights
  • Detailed planet and moon data
  • Astronaut information and missions
  • Real-time space occupancy
  • Launch notifications
  • NASA image gallery
  • Celestial body comparisons
Features
Read full description

Pocket Planets gives you all the information you need about our solar system and human activity in space. Learn more about all 565 astronauts who been to space. What was their mission? How long had they been up there? See who is in space now! Get notified when somebody goes into space. Get up to date information about every planet and moon in the solar system. Including: - Physical characteristics: mass, radius, density, gravity, escape velocity - Orbital characteristics: real-time distance from the Sun and Earth, orbital period, orbital speed, eccentricity, apsis, periapsis, visualise orbit - Atmosphere: pressure, atmospheric composition - Images from Nasa - Moons: compare their size and distance

Screenshots

CassiniMIMI4 screens
Pocket Planets4 screens

Verdict

The call

The clearest difference is ads: CassiniMIMI at none against Pocket Planets's shown. CassiniMIMI also leads on review sentiment (100% vs 67%) and rating (5.0 vs 4.6). Pocket Planets's advantage is ratings volume (22 vs 2). On price, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

CassiniMIMI holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Pocket Planets has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of CassiniMIMI's written reviews are positive against 67% of Pocket Planets's.

UpkeepUpdate frequency

CassiniMIMI ships an update weekly, Pocket Planets every 3 weeks. The most recent releases landed on October 8, 2026 and September 8, 2026 respectively.

Scorecard7 real differences · 3 level
CassiniMIMI versus Pocket Planets: the parameters behind the verdict, then further details
ParameterCassiniMIMIPocket Planets
PriceFreeFree
Rating5.0 (2 ratings) — better4.6 (22 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings222 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better12.0
Further details — not scored
Size19 MB66 MB
Age rating4+4+
DeveloperJohns Hopkins University Applied Physics LaboratoryAd Lunam Kereskedelmi es Szolgaltato Korlatolt Felelossegu Tarsasag

Customer experience

CassiniMIMI

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Pocket Planets

All ratings22 ratings
Positive86.4%
Neutral4.5%
Negative9.1%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

In-app purchases

None

CassiniMIMI

No in-app purchases

None

Pocket Planets

No in-app purchases

Questions

Is CassiniMIMI free?
CassiniMIMI is free to download, with no in-app purchases.
Is Pocket Planets free?
Pocket Planets is free to download, with no in-app purchases.
Which has better reviews, CassiniMIMI or Pocket Planets?
CassiniMIMI is rated higher. CassiniMIMI averages 5.0 out of 5 from 2 ratings, while Pocket Planets averages 4.6 from 22 ratings.
Do CassiniMIMI or Pocket Planets have ads?
Pocket Planets shows ads; CassiniMIMI does not.
Which is updated more often, CassiniMIMI or Pocket Planets?
CassiniMIMI ships an update weekly, and Pocket Planets every 3 weeks. Most recently, CassiniMIMI was updated on October 8, 2026 and Pocket Planets on September 8, 2026.

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