DrakeEquation vs Gravity Zen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DrakeEquation
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- Drake equation was first stated in year 1960 by Frank Drake who was the first to search for radio signals from extraterrestrial civilizations. - The equation calculates the number of civilizations in our galaxy with which communication might be possible. - Put in your own data in the equation and play around with these values and see the chance for a signal from a civilization in our galaxy.
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.
Screenshots
Verdict
The clearest difference is in-app purchases: DrakeEquation at none against Gravity Zen's 2. Gravity Zen's advantage is update cadence (every 9 days vs every 10 months). On price, ads, device support and iOS requirement 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
DrakeEquation costs $0.99 and Gravity Zen $0.99 up front. Gravity Zen sells 2 one-off in-app purchases. DrakeEquation asks for nothing beyond the download.
DrakeEquation ships an update every 10 months, Gravity Zen every 9 days. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.
| Parameter | DrakeEquation | Gravity Zen |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | — | 4.8 (70 ratings) — better |
| Positive reviews | — | 93.8% of reviews |
| Number of ratings | — | 70 — better |
| Update frequency | Every 10 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | domesticusdevelop | Dominik Hauser |
In-app purchases
DrakeEquation
No in-app purchases
Gravity Zen
- Small Tip$0.99
- Large tip$2.99
Questions
Is DrakeEquation free?
Is Gravity Zen free?
Do DrakeEquation or Gravity Zen have ads?
Which is updated more often, DrakeEquation or Gravity Zen?
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