STOP vs TwentySeven
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
STOP
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This is a combat action game to destroy the growth of STOP-CELL that caused the pandemic on a global scale. Easy operation allowed to set the cat human beings of ten people by touching the screen, only to attack the enemy automatically by releasing the touch, anyone can play easily. Enjoy the sound and battle a powerful small cat human who fight hard.
TwentySeven
A 3D puzzle game where you merge colored balloons on a grid to create larger ones. Master spatial and combinatorial thinking to achieve increasingly complex goals, from a level 8 balloon to a full house of different balloon sizes.
- 3D grid-based balloon merging
- Enhances spatial and combinatorial thinking
- Multiple grid sizes and challenges
- Tutorial and undo options
- Customizable controls
- External keyboard support
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27 or Twenty-Seven is a novel puzzle game that enhances spacial and combinatorial thinking. You move colored balloons on a 3D-grid. Adjacent balloons of the same color and size merge to form a balloon of the next higher size. Your goal is to get ever larger balloons. You start on the edges of a cube 2×2×2 grid, with two balloons of level 1 (pink) or 2 (violet). Each time you move or merge balloons, you get another pink balloon. Move and merge away to get a blue (level 3) balloon, then a turquoise (level 4) balloon. Your first goal is a red balloon of level 8. This sounds easy, but can be tricky since you have only 8 positions available. Luckily, you can start over whenever you like. Expert players achieve a red balloon in a few minutes. Even they don't achieve the next goal every time: a full house of 8 different balloons. Once you get tired on the cube, which is in fact a 2×2×2 grid, we have other challenges in store, starting with a 2×2×3 grid, a 2×2×4 grid, and going up to a 3×3×3 grid with 27 possible positions, again in a cube. Now guess where we got our name? While the fundamental rules are the same, winning strategies for each grid vary. The game is easy to learn, and we have a tutorial to teach you. We give you a few opportunities to undo if you make a mistake. You may move and merge balloons by swiping over your touch screen or by pushing buttons. You can also use an external keyboard. You may turn the grid in any direction you like. Buttons can be placed on the right or the left side of screen, or be hidden.
Screenshots
Verdict
The clearest difference is in-app purchases: STOP at none against TwentySeven's 2. STOP also leads on update cadence (every 10 days vs every 21 months) and iOS requirement (12.0 vs 16.0). TwentySeven's advantage is ads (none vs shown). On price 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
Both are free to download. TwentySeven sells 2 one-off in-app purchases. STOP asks for nothing beyond the download.
STOP ships an update every 10 days, TwentySeven every 21 months. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.
| Parameter | STOP | TwentySeven |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 10 days — better | Every 21 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 30 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | ERX | Value from Software LLC |
In-app purchases
STOP
No in-app purchases
TwentySeven
- 3 undo sequences$0.99
- 10 undo sequences$1.99









