Unloop vs Zerko
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Unloop
A minimalist puzzle game offering a calming and engaging experience. Solve intricate levels by eliminating blue portals at your own pace, with no distractions or timers. Enjoy a soothing soundtrack and a creative challenge for all ages.
- Calm and minimalist puzzle gameplay
- 150 intricately designed levels
- Distraction-free environment
- Soothing ambient soundtrack
- Progressively introduced mechanics
- Stress-relieving experience
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Unloop is a calm and minimalist puzzle game designed to provide a soothing and engaging experience. Your goal is to eliminate all the blue portals, embarking on a journey of thoughtful problem-solving. Unloop is completely ad-free. Experience an absence of text, intrusive tutorials, timers, and distractions. Immerse yourself in the calming melodies of the soundtrack as you engage with each puzzle at your own pace. Unloop offers a series of 150 meticulously crafted levels that gradually progress in complexity, introducing new elements and twists that require creativity and out-of-the-box thinking. Boost your IQ skills with brain-teasing puzzles! As you progress, you'll encounter a variety of levels that seamlessly blend familiar mechanics with innovative concepts, creating a captivating and distinctive gameplay experience. Whether you're a seasoned puzzle enthusiast or new to the genre, Unloop offers a unique challenge that appeals to a broad range of players of all ages. Download Unloop and relieve stress while enjoying an artistic, exciting and creative dimension of mind-teasing puzzles. Achieve Unloop mastery! Key Features: - Enjoy a stress-free, calm and relaxing puzzle-solving adventure. - Solve your way through 150 intricately designed levels, each increasing in complexity. - Experience a distraction-free environment with no text or interruptions. - Explore progressively introduced elements and mechanics. - Immerse yourself in a soothing ambient soundtrack. - Crafted over 2.5 years by a solo developer.
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
Screenshots
Verdict
The clearest difference is price: Unloop at Free against Zerko's $2.99. Unloop also leads on ratings volume (50 vs 14) and iOS requirement (10.0 vs 12.0). Zerko's advantage is in-app purchases (none vs 1). On rating, review sentiment, update cadence and ads 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
Unloop is free to download; Zerko costs $2.99 up front. Unloop sells 1 one-off in-app purchase. Zerko asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Unloop against 4.9 for Zerko. Both are backed by a comparable volume of ratings — 50 and 14 respectively. Written reviews are what separate them: 100% of Unloop's written reviews are positive against 93% of Zerko's.
Unloop ships an update every 2 weeks, Zerko every 3 weeks. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.
| Parameter | Unloop | Zerko |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (50 ratings) — better | 4.9 (14 ratings) |
| Positive reviews | 100.0% of reviews — better | 93.3% of reviews |
| Number of ratings | 50 — better | 14 |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 61 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Jurij Galievskij | Maciej Targoni |
Customer experience
Unloop
Zerko
In-app purchases
Unloop
- Unlock all Levels$1.99
Zerko
No in-app purchases
