Planet Gravity vs NX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planet Gravity
Explore the gravitational pull of different celestial bodies. Watch pendulums swing and collide under varying gravitational forces, offering a unique physics simulation experience.
- Select different planets for unique gravity
- Observe pendulum collisions
- Physics-based simulation
- Educational planet facts
- Interactive entertainment
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Planet Gravity isn't just about gravity anymore. Select a planet to get a scrolling fact about that planet on the display. This app is a twist on the Newton’s cradle balance balls. The pendulum balls collide just like the real set and you can select other planets to use that planet’s gravity. How does the pendulum swing with different gravity? Even the Sun has gravity - see what it does to the motion of the pendulums (well they'd probably melt but you get the idea.....)
NX
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This app is equipped with NX-1800 drone, and its main functions are as follows: 1. Real time image transmission 2. Take photos and video 3. Rocker control, gravity induction control, trajectory flight 4. Headless mode 5. 3D split screen display
Screenshots
Verdict
The clearest difference is update cadence: NX at every 4 months against Planet Gravity's every 14 months. NX also leads on iOS requirement (9.0 vs 17.6). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Planet Gravity ships an update every 14 months, NX every 4 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | Planet Gravity | NX |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| Update frequency | Every 14 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 146 MB |
| Age rating | 4+ | 4+ |
| Developer | Niagara Mobile LLC | Directed Electronics Australia |
In-app purchases
Planet Gravity
No in-app purchases
NX
No in-app purchases
