Gravity Zen vs TBPS Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gravity Zen
Observe small circles interacting with a central gravity field. Add numerous boxes to explore how they naturally settle into a stable arrangement. It's a simple yet captivating simulation.
- Gravity field simulation
- Add multiple objects
- Observe stable configurations
- Interactive physics
- Minimalist design
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Watch small circles move around a central gravity field. Add as many boxes as you like. Explore how they find a "stable" configuration by themselves.
TBPS Lite
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TBPS is a versatile three-body problem simulator that allows you to explore the fascinating and mysterious dynamics of three-body phenomena. Whether you're an observer marveling at the unpredictable motions of celestial objects or a creator designing unique universes by tweaking various parameters, TBPS offers a compelling experience. Learn more about the three-body problem in mathematics and physics by visiting https://en.wikipedia.org/wiki/Three-body_problem or explore its depiction in literature through the acclaimed novel *The Three-Body Problem* by Liu Cixin at [https://en.wikipedia.org/wiki/The_Three-Body_Problem_(novel)](https://en.wikipedia.org/wiki/The_Three-Body_Problem_(novel)).
Screenshots
Verdict
The clearest difference is price: TBPS Lite at Free against Gravity Zen's $0.99. TBPS Lite also leads on in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.0). Gravity Zen's advantage is chart position (#193 vs unranked). On update cadence, ads 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
TBPS Lite is free to download; Gravity Zen costs $0.99 up front. Gravity Zen sells 2 one-off in-app purchases. TBPS Lite asks for nothing beyond the download.
Gravity Zen ships an update every 9 days, TBPS Lite weekly. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.
| Parameter | Gravity Zen | TBPS Lite |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.8 (68 ratings) — better | — |
| Positive reviews | 93.3% of reviews | — |
| Number of ratings | 68 — better | — |
| Update frequency | Every 9 days | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Best chart rank | #193 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Dominik Hauser | Wu Bin |
In-app purchases
Gravity Zen
- Small Tip$0.99
- Large tip$2.99
TBPS Lite
No in-app purchases
Questions
Is Gravity Zen free?
Is TBPS Lite free?
Do Gravity Zen or TBPS Lite have ads?
Which is updated more often, Gravity Zen or TBPS Lite?
Other comparisons
