Sosuu vs Gravity 80s
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sosuu
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【Sosuu - Prime Factorization Puzzle】 Tap numbers to factorize them into primes! Match 3 or more identical primes to clear them. A simple yet deep puzzle game. ■ How to Play • Tap gray numbers (composites) to factorize them • Example: Tap 12 → splits into 2, 2, 3 • When 3+ identical primes get close, they merge and disappear • Keep numbers below the red line to survive ■ Game Modes • ZEN: Relaxed endless gameplay • RUSH: 60-second time attack • PUZZLE: Clear with limited moves ■ Features • Beautiful cosmic-themed design • Satisfying pop effects • Naturally develop mathematical thinking • No ads, plays offline Welcome to the world of prime numbers!
Gravity 80s
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Gravity Dot is a space physics puzzle game where you pilot a tiny dot-ship through procedurally generated solar systems using only planetary gravity and a limited fuel thruster. No waypoints. No autopilot. Just you, inertia, and gravity. ARCADE MODE Progress through increasingly complex solar systems. Use swing-by maneuvers to navigate around planets, avoid black holes, and reach the target star. Drain its energy to clear the mission, then spend earned energy on upgrades at the Hangar. 3 lives per run — one wrong orbit and it's game over. ENDLESS MODE Explore an infinite universe with no fuel limits. Absorb energy from any planet for score and drift as far as you can. Unlocked after clearing Mission 5. HOW TO PLAY - Drag anywhere to aim your thruster - Hold to accelerate — fuel is limited, use it wisely - Release to coast on inertia - Use planetary gravity to slingshot, brake, and change direction - Pinch to zoom in and out FEATURES - Real swing-by physics powered by a custom Velocity Verlet engine - 300+ real celestial bodies from astronomical catalogs - 17 procedural planet shaders — gas giants, ice worlds, lava planets, black holes, and more - 4 distinct map layouts — solar system, corridor, cluster, and dual core - 6-category upgrade system with 10 levels each - Rogue planets and binary moons at higher levels - Real-time orbit prediction line - Planet scan HUD identifying nearby celestial bodies - Full planet catalog tracking every encounter - All sound effects and ambient music synthesized at runtime — zero audio files - Retro pixel art visuals - Game Center leaderboards No ads. No in-app purchases. Just pure space physics.
Screenshots
Verdict
Sosuu and Gravity 80s are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | Sosuu | Gravity 80s |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Kosuke Kikuchi | kota morishita |
In-app purchases
Sosuu
No in-app purchases
Gravity 80s
No in-app purchases









