Planet Gravity vs Fill Up Bucket
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.....)
Fill Up Bucket
A retro-style puzzle game where you draw lines to redirect water flow into buckets. It offers a simple yet challenging experience for players seeking a brain-teasing challenge.
- Retro LCD style graphics
- Draw lines to change water direction
- Simple yet challenging gameplay
- Puzzle-solving mechanics
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Old LCD style Puzzle game. Simply draw some lines to change water flowing direction. Let it flow into the buckets. It is simple but challenging.
Screenshots
Verdict
The clearest difference is price: Planet Gravity at Free against Fill Up Bucket's $5.00. Planet Gravity also leads on ads (none vs shown) and review sentiment (25% vs 13%). Fill Up Bucket's advantage is iOS requirement (15.6 vs 17.6). On update cadence, 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
Planet Gravity is free to download; Fill Up Bucket costs $5.00 up front. Neither carries in-app purchases, so what you see is what you pay.
Planet Gravity ships an update every 14 months, Fill Up Bucket every 15 months. Both last shipped on October 24, 2026.
| Parameter | Planet Gravity | Fill Up Bucket |
|---|---|---|
| Price | Free — better | $5.00 |
| Rating | — | 4.0 (1 ratings) — better |
| Positive reviews | 25.0% of reviews — better | 12.5% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 14 months — better | Every 15 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 5 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Niagara Mobile LLC | Oscar Tsang |
Customer experience
Planet Gravity
Fill Up Bucket
In-app purchases
Planet Gravity
No in-app purchases
Fill Up Bucket
No in-app purchases
Questions
Is Planet Gravity free?
Is Fill Up Bucket free?
Do Planet Gravity or Fill Up Bucket have ads?
Which is updated more often, Planet Gravity or Fill Up Bucket?
Other comparisons
