Comparison

Radioactivity vs CloudLabs Planetary system

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

Head to head
About

Radioactivity

Features
Read full description

Radioactivity K12 Learning app helps us to know about Radioactive Decay, Nuclear Fission and Fusion. Our app makes it easy for kids and students to understand the uses and safety measures of Radioactivity. Our objective is to make this science concept simple to understand for students and get in-depth knowledge of the subject. There are three sections in the app: Each section is targeted to develop the student’s skills. Radioactivity app is designed to provide extra help for each and every physics student. Radiation & Radioactivity: This section explains the complete definition of Radiation, Radioactivity and Radioisotopes. *Radioactive Decay - There are three types of Radioactive Decay - namely Alpha Decay, Beta Decay and Gamma Decay based on the respective radiations Alpha, Beta and Gamma radiations. *Nuclear Fission - A large nucleus splits to form two smaller nuclei and some neutrons.This section explains two kinds of Nuclear Fission namely spontaneous fission and Neutron-induced fission. *Nuclear Fusion - Two small nuclei come together and join to form a large nucleus, releasing energy. 2) Uses & Safe Handling: This section explains about Uses & Safe Handling of Radioactive elements. Radioactivity is used for various functionalities in industries and medicine like Smoke detector, Thickness measurement, Leak detection. 3) Quiz: An interactive quiz to check the knowledge with score board. Download the Radioactivity app and other K12 educational apps published by Ajax Media Tech and make your kids shine in science.

About

CloudLabs Planetary system

Features
Read full description

In this simulation, you are asked to calculate some measurements of celestial bodies, such as area, perimeter, and volume. To do so, a holographic projector is available for the observation and measurement of the necessary distances. The correct calculation of these properties will help the astronauts learn more about the new planetary system.

Screenshots

CloudLabs Planetary system2 screens

Verdict

The call

The clearest difference is price: CloudLabs Planetary system at Free against Radioactivity's $0.99. CloudLabs Planetary system also leads on update cadence (every 8 months vs every 36 months) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

CloudLabs Planetary system is free to download; Radioactivity costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Radioactivity ships an update every 36 months, CloudLabs Planetary system every 8 months. The most recent releases landed on October 3, 2026 and October 25, 2026 respectively.

Scorecard3 real differences Β· 3 level
Radioactivity versus CloudLabs Planetary system: the parameters behind the verdict, then further details
ParameterRadioactivityCloudLabs Planetary system
Price$0.99Free β€” better
Update frequencyEvery 36 monthsEvery 8 months β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPadiPhone, iPad, iPod β€” better
Requires iOS12.011.0 β€” better
Further details β€” not scored
Size52 MB243 MB
Age rating4+17+
Developerwww.ajaxmediatech.comJiovany Orozco

In-app purchases

None

Radioactivity

No in-app purchases

None

CloudLabs Planetary system

No in-app purchases

Questions

Is Radioactivity free?
Radioactivity costs $0.99, with no in-app purchases.
Is CloudLabs Planetary system free?
CloudLabs Planetary system is free to download, with no in-app purchases.
Do Radioactivity or CloudLabs Planetary system have ads?
Neither Radioactivity nor CloudLabs Planetary system shows ads.
Which is updated more often, Radioactivity or CloudLabs Planetary system?
Radioactivity ships an update every 36 months, and CloudLabs Planetary system every 8 months. Most recently, Radioactivity was updated on October 3, 2026 and CloudLabs Planetary system on October 25, 2026.

Other comparisons