Krun vs Lullroll
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Krun
Engage with a digital pinwheel that creates captivating optical illusions as it spins and slows. Customize shapes, colors, and speed for a unique visual experience. It's a simple yet mesmerizing tool for all ages.
- Swipe-to-spin pinwheels
- Illusions appear as rotation slows
- Shape, color, and speed customization
- Unlock all content
- Remove ads
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Spin a pinwheel and watch hidden shapes appear while it's moving. Swipe to spin, then enjoy optical illusions as the speed changes. Simple and intuitive for kids and adults. • Swipe-to-spin pinwheels • Illusions that appear as rotation slows • Shape, color, and speed customization • Premium: unlock all and remove ads
Lullroll
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Lullroll is a maze game for Apple Watch built for the short pockets of the day when you just need to breathe and unplug for a minute. Each level is generated on the fly: you never see the same maze twice. Tilt your watch to move the ball, or use touch gestures depending on your model. When you finish, another maze is already waiting — no loading screens, no ads. Features • Procedural mazes with multiple algorithms (Backtracker, Kruskal, Prim, Wilson, Division). • Tilt control with built-in calibration, or touch gestures. • Local stats: time, moves, completed levels. • Unlockable achievements. • No sound, no network, no account. Everything stays on your watch. Made for Apple Watch (watchOS 26.4 or later).
Screenshots
Verdict
The clearest difference is in-app purchases: Lullroll at none against Krun's 1. Lullroll also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.6). On price 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. Krun sells 1 one-off in-app purchase. Lullroll asks for nothing beyond the download.
| Parameter | Krun | Lullroll |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Shinichiro Eto | Antonio J. Gonzalez |
In-app purchases
Krun
- Premium Unlock$2.99
Lullroll
No in-app purchases
