ThePrimes vs Gravity Stacker
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
ThePrimes
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This game is all about Prime numbers and the use of little grey cells whilst creating Prime number formulas from numbers and operations on a 5x8 grid. You should select numbers and operations in alternate order to form prime number expressions (for example 4*1+7 is 11 = prime number). As your score increases, game speed is faster. You can also play the game on three different game levels. Think this is too hard and too complicated for you? Great, that just means that you’re not ready, so you only have two options: either you give up and go play with watercolors and crayons or try hard, practice your brain and become a member of an ultimate geek battalion of excellence!
Gravity Stacker
Challenge your stacking skills with a classic physics game featuring eight distinct gravity settings. Test your precision and strategy to stack shapes in increasingly difficult scenarios.
- Eight unique gravity settings
- Shape stacking gameplay
- Physics-based challenges
- Single-player mode
- Classic game mechanics
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8 different Gravities to Challenge your inner monster to Stack Shapes.
Screenshots
Verdict
The clearest difference is update cadence: ThePrimes at every 7 months against Gravity Stacker's every 45 months. Gravity Stacker's advantage is iOS requirement (8.0 vs 12.0). 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.
ThePrimes ships an update every 7 months, Gravity Stacker every 45 months. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.
| Parameter | ThePrimes | Gravity Stacker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.6 (7 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 7 months — better | Every 45 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Damir Kolobaric | Hooda Math |
In-app purchases
ThePrimes
No in-app purchases
Gravity Stacker
No in-app purchases
Questions
Is ThePrimes free?
Is Gravity Stacker free?
Do ThePrimes or Gravity Stacker have ads?
Which is updated more often, ThePrimes or Gravity Stacker?
Other comparisons
