Kulla vs Ouros
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Kulla
Navigate challenging 3D worlds by controlling a player ball. This game requires skill, patience, and a sense of puzzle-solving to overcome 105 levels across seven distinct worlds. Enjoy customizable controls and a high-score timer for each level.
- 105 levels of varying difficulty
- Customizable player ball controls
- Level preview and rating system
- Special background music
- AirPlay support for TV play
- Open level progression
- Highscore timer
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KULLA - DI - BULLA 3D ------------------------ For all fans my Kulla-di-Bulla: Now it goes into the third DIMENSION !!! After almost a year of hard work now finally in 3D More photos and videos at http://www.kulla-di-bulla.com ############################################################################ # # MADE FOR 64 BIT! # Check your hardware, full 3D game experience is only available from iPhone 5S # and iPad Air. For older devices, the 3D effects are almost switched off... # ############################################################################ Comments and suggestions for improvement are always welcome. Please send to: iphone@projectizer.de With Kulla-Di-Bulla, you control your player ball "Bulla" through lots of different 3D worlds. From the simplest to really difficult levels and I hope you take the challenges! What you need in each case is skill, a steady hand, sometimes patience, a sense of puzzling and also fun to try some non logical things. In any case, a lot of fun is guaranteed ... - 105 level of absolute fun from Easy to Hard, everything is there - Control completely re-designed, control the ball how you like it most - Level preview in the level selection to find your favorite level quickly - my level rating from simple (green) to heavy (red) protects you from frustration - special background music created for the game - your own music playback can continue during the game - full AirPlay support, so you can play on your Super TV - controllable without looking at the display; optimal for AirPlay - completely open levels: play any level whenever you like - full playable Birds Eye view to keep the level under control - Highscore timer for each level: if you know how to do it, cut down your timing - universal app for iPhone and iPad with customized playing fields - latest 3D technology thanks to APPLE Scenekit with the version for iOS 9 - full 3D performance from iPhone 5s and iPad Air devices or higher - 7 worlds each 15 levels with different control modes: touch and gyro - bilingual German / English in the app switchable - in-game help available - Highscore Reset can be set in the App Settings Have fun with Kulla-di-Bulla 3D from the Developer ...
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 in-app purchases: Ouros at none against Kulla's 2. Kulla's advantage is review sentiment (100% vs 90%) and price ($1.99 vs $2.99). On update cadence, ads, 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
Kulla costs $1.99 and Ouros $2.99 up front. Kulla sells 2 one-off in-app purchases. Ouros asks for nothing beyond the download.
Kulla ships an update every 8 months, Ouros every 5 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | Kulla | Ouros |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | — | 4.9 (82 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 90.0% of reviews |
| Number of ratings | — | 82 — better |
| Update frequency | Every 8 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 267 MB | 138 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Arnhold | Michael Kamm |
Customer experience
Kulla
Ouros
Bugs and requests
Kulla
Not enough reviews yet to summarise bugs or requests.
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
Kulla
- Ultimate Help$0.99
- Level Complete$2.99
Ouros
No in-app purchases









