Zerko vs PushRooms
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Zerko
A relaxing puzzle game where you strategically place blocks to make all numbers on the board equal zero. Enjoy a no-pressure experience with calming audio and no in-app purchases or ads.
- Zero-sum number puzzles
- Strategic block placement
- Relaxing gameplay
- No time pressure
- No in-app purchases
- No ads
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Some call it reverse sudoku, while others call it a nullification game, but it's Zerko - a puzzle game filled with shapes, numbers, and a straightforward goal: make every number zero. To achieve this, you need to strategically place blocks of various shapes and values so that the numbers on the board effectively "remove up" to zero. Like all my games, this one too is about relaxation... Just chill. There are no points, no time pressure, no data collection, no in-app purchases, no ads, no nonsense ;) My only hope is that you'll enjoy it and that I'll be able to add new content and levels for you in the future. Relaxing audio by: Marek Koszczyński
PushRooms
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A little push. A big adventure. PushRooms is a charming box-pushing puzzle game with 120 stages across four worlds. Push boxes onto their destinations and find a path to the exit. • Explore forest, sea, night and winter worlds. • Solve puzzles with holes, spike switches and direction-restricted boxes. • Take on boss rooms and rescue princesses. • Choose joystick or directional button controls. • Use Undo to rethink your moves, or watch a rewarded ad for more Undos and movement hints. • Play in English or Korean, automatically selected from your device language. Think ahead, make your move, and open the way.
Screenshots
Verdict
The clearest difference is price: PushRooms at Free against Zerko's $2.99. PushRooms also leads on update cadence (daily vs every 3 weeks). Zerko's advantage is ads (none vs shown) and chart position (#190 vs unranked). On in-app purchases 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
PushRooms is free to download; Zerko costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Zerko ships an update every 3 weeks, PushRooms daily. Both last shipped on October 16, 2026.
| Parameter | Zerko | PushRooms |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.9 (14 ratings) — better | — |
| Positive reviews | 93.3% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 3 weeks | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #190 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 100 MB | 146 MB |
| Age rating | 4+ | 9+ |
| Developer | Maciej Targoni | Kronon Labs Co., Ltd. |
In-app purchases
Zerko
No in-app purchases
PushRooms
No in-app purchases









