Causality vs Ouros
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Causality
Manipulate time to solve intricate puzzles and guide stranded astronauts to safety. Work with your past selves across alien landscapes to overcome paradoxes and complete hazardous levels within a time limit.
- Manipulate time to change level outcomes
- Work with past selves
- Solve paradoxes
- Guide astronauts to safety
- 60 challenging levels
- Unlock achievements
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Causality is a puzzle game about manipulating time, altering the sequence of events and changing the outcome of each level. Set across strange and alien landscapes, help a group of stranded astronauts find a route to safety. Travel through time, work with your past selves and solve paradoxes as you take on this uniquely challenging puzzler. Each level represents a brief but hazardous moment in time. Levels are completed by guiding each astronaut to an exit that matches their colour, within a limited time frame. When all astronauts reach an exit the level is complete. - Control time and change the outcome of each level - Work with your past selves to solve puzzles - 60 levels to complete - 13 achievements to unlock
Ouros
A relaxing puzzle game where you manipulate curves to match targets in a serene environment. Discover the mathematical beauty of shapes with over 120 handcrafted levels. Enjoy a fluid, stress-free experience with intuitive controls and dynamic visuals.
- Original spline-based control scheme
- Lush visuals and dynamic soundscapes
- Flexible level progression and hint system
- Intuitive multi-touch controls
- Fluid gameplay without timers or scores
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Ouros is a calming puzzle game about forming beautiful curves in a serene space. Find your flow as you nudge, bend, and stretch curves into pleasing shapes. The goal is simple. Align the curve with the targets, then watch the orb gracefully glide through them. With over 120 handcrafted puzzles to solve, Ouros invites you to discover the inherent mathematical beauty of its world. Features: - An original spline-based control scheme - Lush visuals and soothing soundscapes that dynamically respond to the forms you create - A flexible level progression and hint system that let you play at your own pace - Intuitive multi-touch controls made with touchscreens in mind - A fluid gameplay experience free of timers, scores, or dexterity requirements
Screenshots
Verdict
The clearest difference is rating: Ouros at 4.9 against Causality's 4.4. Ouros also leads on review sentiment (90% vs 70%). Causality's advantage is price ($1.99 vs $2.99) and iOS requirement (11.0 vs 13.0). On ratings volume, update cadence, ads and in-app purchases 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
Causality costs $1.99 and Ouros $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ouros holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 185 and 82 respectively. Written reviews point the same way: 70% of Causality's written reviews are positive against 90% of Ouros's.
Causality ships an update every 3 months, Ouros every 5 months. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.
| Parameter | Causality | Ouros |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | 4.4 (185 ratings) | 4.9 (82 ratings) — better |
| Positive reviews | 69.8% of reviews | 90.0% of reviews — better |
| Number of ratings | 185 — better | 82 |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 166 MB | 138 MB |
| Age rating | 9+ | 4+ |
| Developer | Loju LTD | Michael Kamm |
Customer experience
Causality
Ouros
User reviews
Causality
From 185 App Store ratingsWhat we love
- 🚀 Unique and challenging puzzles
- 👍 Intuitive and easy-to-use UI
- 🎨 Beautiful graphics and sound design
- 💡 Innovative time travel mechanics
- 🧠 Mind-bending gameplay
Room to improve
- 🐛 Bugs and glitches in certain levels
- 🤔 Lack of clear instructions or tutorials
- 🕹️ Unintuitive controls on some devices
- 🔁 Repetitive gameplay after a while
Ouros
From 82 App Store ratingsWhat we love
- 🎨 Gorgeous visuals and art direction
- 🎶 Beautiful music and sound design
- 🧠 Intellectually challenging and clever puzzles
- 🧘 Relaxing and calming gameplay experience
- 👍 Smooth introduction of new concepts and mechanics
Room to improve
- ⏳ Too short for the price
- 📱 Landscape mode only (inconvenient for some)
- 🔊 Sound/SFX not working for some users
- ❓ Lack of clear instructions for some
- 🎛️ Constant 'bongs' can be distracting
Bugs and requests
Causality
Reported bugs
3 issues- Certain levels (e.g. 307, 407, 410) not working as expected
- Game crashing or freezing on some devices
- Issues with achievements not unlocking properly
Requested features
4 requests- More levels and content
- Ability to replay completed levels
- Cloud save/sync support
- Difficulty settings or options
Ouros
Reported bugs
3 issues- Sound/SFX not working on iPhone
- Numbers are sideways in portrait mode
- Issue getting into corners with no running room on iPad
Requested features
7 requests- Add more levels
- Add Watch support
- Allow playing own music in the background
- Option to change orientation to portrait mode
- iCloud sync for progress across devices
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- Ability to turn off movement while working on puzzles
- Make help icon placement more accessible on iPad
In-app purchases
Causality
No in-app purchases
Ouros
No in-app purchases
