Zerko vs Bulble
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
Read full descriptionHide full description
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
Bulble
A daily puzzle game where you connect tiles to create a single continuous grid. Offers endless random puzzles, difficult challenges, and daily puzzles to share. Customize the difficulty with modifiers.
- Connect tiles to form a grid
- Daily shareable puzzles
- Endless random generation
- Difficulty modifiers
- No ads or in-app purchases
Read full descriptionHide full description
Bulble is a satisfying daily game about connecting tiles to form a single continuous grid. - No ads, spam, notifications, or in-app purchases. - Endless random puzzle generation - Difficult challenges - Daily puzzles to share with friends. - Difficulty modifiers to add challenge and fun.
Screenshots
Verdict
The clearest difference is update cadence: Zerko at every 3 weeks against Bulble's every 2 months. Zerko also leads on chart position (#142 vs unranked) and iOS requirement (12.0 vs 15.0). Bulble's advantage is price ($0.99 vs $2.99). On rating, review sentiment, ratings volume 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
Zerko costs $2.99 and Bulble $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Zerko against 5.0 for Bulble. Both are backed by a comparable volume of ratings — 14 and 21 respectively. Written reviews are what separate them: 93% of Zerko's written reviews are positive against 100% of Bulble's.
Zerko ships an update every 3 weeks, Bulble every 2 months. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.
| Parameter | Zerko | Bulble |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 4.9 (14 ratings) | 5.0 (21 ratings) — better |
| Positive reviews | 93.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 14 | 21 — better |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #142 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 100 MB | 255 MB |
| Age rating | 4+ | 4+ |
| Developer | Maciej Targoni | Marshall Mcgee |
Customer experience
Zerko
Bulble
In-app purchases
Zerko
No in-app purchases
Bulble
No in-app purchases
