Future Earth vs Three
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Future Earth
Explore potential future geological changes on Earth over the next 250 million years. This app visually depicts the evolution of continents and oceans based on scientific understanding of plate tectonics and geologic history.
- Future geological simulations
- Continental evolution visualization
- Oceanic change depiction
- Plate tectonics based predictions
- 250 million year timeline
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Would you like to continue your travels forward in time? Well, jump on the Ancient Earth time machine app and travel forward in time to see how the world might change in the next 250 million years. This version of Ancient Earth vividly illustrates how continents and oceans might evolve. How long will the Atlantic Ocean continue to open? Is the world likely to see a new supercontinent? If so, what will it look like? Based on accumulated knowledge of plate motion and geologic history, Future Earth presents one possible future of the world’s continents.
Three
Explore celestial mechanics by simulating gravitational interactions between multiple celestial bodies. Users can add up to seven suns and an asteroid matrix to observe complex orbital behaviors and gravitational slingshot effects. The app allows for adjustments to gravity parameters for demonstration purposes.
- Multi-body gravitational simulation
- Add up to 7 suns
- Asteroid matrix simulation
- Observe gravitational slingshots
- Adjustable gravity parameters for demonstration
- Enlarged volumes for better observation
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1. For a batter observation, all volumes are enlarged by many times (the range of gravity in the real universe is much larger, and the planet is much smaller, so don’t worry about breaking the Roche limit) 2. Users can add up to 7 Sun, and randomly distribute them to nearby spaces. 3. Users can add an asteroid matrix. Asteroids have no gravity (negligibly small in the reality) and are only affected by Suns. (Well, in fact, it is afraid that the cpu is limited, and it is impossible to calculate the mutual gravitational force of too many stars.) 4. The three-body system is very unstable, and it is prone to gravitational slingshot effect. If a star is too far away from other stars, it may never come back. 5. However, users can also turn on an additional r/10 parameter to increase the gravitational force of stars at a long distance and make it return to the system (after turning on the parameter, it can only be used for demonstration, and the data has no reference value).
Screenshots
Verdict
The clearest difference is rating: Future Earth at 4.6 against Three's 2.0. Future Earth also leads on ratings volume (49 vs 4) and review sentiment (60% vs 50%). Three's advantage is update cadence (weekly vs every 2 months) and price ($0.99 vs $1.99). On ads, in-app purchases, monetization model 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
Future Earth costs $1.99 and Three $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Future Earth holds the better App Store score, 4.6 against 2.0. That said, the two scores are not equally well evidenced: Future Earth has 49 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 60% of Future Earth's written reviews are positive against 50% of Three's.
Future Earth ships an update every 2 months, Three weekly. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.
| Parameter | Future Earth | Three |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 4.6 (49 ratings) — better | 2.0 (4 ratings) |
| Positive reviews | 60.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 49 — better | 4 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas L. Moore | 骐显 梁 |
Customer experience
Future Earth
Three
In-app purchases
Future Earth
No in-app purchases
Three
No in-app purchases
Questions
Is Future Earth free?
Is Three free?
Which has better reviews, Future Earth or Three?
Do Future Earth or Three have ads?
Which is updated more often, Future Earth or Three?
Other comparisons
