"Klocki" vs HollowCube
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
"Klocki"
Connect all the lines on the board in this calming puzzle game. Enjoy a stress-free experience with no ads, time limits, or scoring. Immerse yourself in meditative gameplay with an ambient soundtrack.
- Connect all lines
- Relaxing gameplay
- No ads or time limits
- Meditative soundtrack
- Offline play
- Cloud save
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"Klocki" is a relaxing puzzle game in which your task is to connect all the lines on the board.... But not only! I designed the game so that you can play it without any pressure or stress. No ads, time limits or scoring. Calm gameplay is accompanied by meditative soundtrack created by Wojciech Wasiak. - Relaxing - Minimal - Simple - Zen - No ads - Created by one person - Can be played without internet - Great meditative, ambient soundtrack - Cloud Save - Selected as one of the best mobile games of 2016 by Apple Feel free to check my other games on https://www.rainbowtrain.eu/
HollowCube
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Hollowcube is a calm 3D puzzle. You empty a cube of colored cells by sliding each one out along its arrow. A cell can leave only if the path in front of its arrow is clear. The trick is seeing the right arrow in a crowded, translucent cube. Deliberately quiet: • No ads, no timer, no lives, no daily streaks. • Fully offline — complete in airplane mode. • You can never get stuck; every board is solvable. • Undo isn't destructive: try another path and your old attempt stays too — move between them freely. • Color-blind mode and a layer view. 20 levels free. Unlock the rest with a single one-time purchase — not a subscription, once and forever.
Screenshots
Verdict
The clearest difference is price: HollowCube at Free against "Klocki"'s $2.99. HollowCube also leads on update cadence (weekly vs monthly). "Klocki"'s advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 18.6). On ads 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
HollowCube is free to download; "Klocki" costs $2.99 up front. HollowCube sells 1 one-off in-app purchase. "Klocki" asks for nothing beyond the download.
"Klocki" ships an update monthly, HollowCube weekly. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.
| Parameter | "Klocki" | HollowCube |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.5 (756 ratings) — better | — |
| Positive reviews | 85.0% of reviews | — |
| Number of ratings | 756 — better | — |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 121 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Maciej Targoni | MUCAHIT SIK |
Bugs and requests
"Klocki"
Reported bugs
2 issues- Game resets to first level after completion
- Occasional freezing/crashing issues
Requested features
3 requests- Add more levels and content
- Implement level selection or progress tracking
- Improve accessibility for color-blind users
HollowCube
Not enough reviews yet to summarise bugs or requests.
In-app purchases
"Klocki"
No in-app purchases
HollowCube
- Unlock All Levels$2.99
