Zerko vs Roterra Just Puzzles
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
Roterra Just Puzzles
Engage in mind-bending logic mazes with this anniversary edition. Solve challenging puzzles by shifting gravity and rotating cubes to guide characters through fantastical worlds. Choose your puzzle and embrace a new perspective to overcome obstacles.
- Mind-bending logic mazes
- Shifting gravity mechanics
- Path-swapping gems
- Unexpected switches
- Character-based puzzles
- Rotatable cubes
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Celebrate Roterra's 5th Anniversary with a Puzzle Challenge! Get ready for mind-bending fun with this special anniversary edition of Roterra! This free version is packed with challenging puzzles featuring hidden blocks, path-swapping gems, and unexpected switches. The twist? You get to choose your puzzle. Lead Angelica, Orlando, wizards, and knights through blocky mazes filled with new puzzles and updated graphics. Roterra Just Puzzles is the perfect break from your usual gaming routine! Navigate a World Where Gravity Doesn't Apply In Roterra, the ground shifts with every move. Slide and rotate cubes to find the right path for Princess Angelica and her friends. Solve complex mazes in a fantastical world where "up" is relative and the path forward may be behind you. Sometimes, flipping your perspective reveals that the journey is more important than the destination. Choose Your Puzzle Select from a variety of challenging yet solvable puzzles featuring characters from the series that turned gaming stereotypes upside down. Play as a former damsel in distress, a villain turned hero, or a teammate turned rival. Embrace the Power of Perspective Roterra's unique puzzles encourage players to think differently. Sometimes, a simple change in perspective can be the key to solving a problem. Are you ready to embrace the challenge and celebrate five years of Roterra? The perfect game to sit down with a coffee and give your brain a tease.
Screenshots
Verdict
The clearest difference is price: Roterra Just Puzzles at Free against Zerko's $2.99. Zerko's advantage is in-app purchases (none vs 1) and ads (none vs shown). On ratings volume, update cadence, device support and iOS requirement 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
Roterra Just Puzzles is free to download; Zerko costs $2.99 up front. Roterra Just Puzzles sells 1 one-off in-app purchase. Zerko asks for nothing beyond the download.
Zerko holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 14 and 19 respectively. Written reviews point the same way: 93% of Zerko's written reviews are positive against 76% of Roterra Just Puzzles's.
Zerko ships an update every 3 weeks, Roterra Just Puzzles every 2 weeks. The most recent releases landed on September 11, 2026 and July 5, 2026 respectively.
| Parameter | Zerko | Roterra Just Puzzles |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.9 (14 ratings) — better | 4.6 (19 ratings) |
| Positive reviews | 93.3% of reviews — better | 76.0% of reviews |
| Number of ratings | 14 | 19 — better |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 100 MB | 772 MB |
| Age rating | 4+ | 4+ |
| Developer | Maciej Targoni | Dig-It Games |
Customer experience
Zerko
Roterra Just Puzzles
Bugs and requests
Zerko
Not enough reviews yet to summarise bugs or requests.
Roterra Just Puzzles
Reported bugs
3 issues- Puzzles not loading properly
- Unsolvable puzzles due to layout issues
- Camera bug preventing level completion
Requested features
2 requests- Option to pay to remove ads
- Ability to turn off music
In-app purchases
Zerko
No in-app purchases
Roterra Just Puzzles
- Remove Ads$0.99
Questions
Is Zerko free?
Is Roterra Just Puzzles free?
Which has better reviews, Zerko or Roterra Just Puzzles?
Do Zerko or Roterra Just Puzzles have ads?
Which is updated more often, Zerko or Roterra Just Puzzles?
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