Gem Mining Robot vs DualGrid
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Gem Mining Robot
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A casual game for a self-propelled robot that specializes in digging gems. It has enough power, and with a powerful laser launcher, it can evaporate clay and move almost unimpeded underground. It also has front and rear cannons that can destroy various monsters underground. But it must be able to fire after digging at least one gem. This robot is not omnipotent. It does not know where the gems are, nor where the monsters are. It needs your operation to complete the task. 1. The direction of advance: You need to indicate the direction of advance for it (by gently swipe to up, down, left or right) 2. When to fire: There are various monsters that can automatically track it, and as long as they touch it, the game will over. Therefore, it is best to shoot the monsters before they approach, and of course the score will be consumed. 3. Do nothing about the stone: it can only go around the stone and move forward. However, for the stone that has no obstacles in front or is at the edge of the tunnel, just push it lightly to break through the obstacles and continue to move forward. Because stones can kill all kinds of monsters, in order to save score, it is best to use stones to kill such monsters. Main operations: 1. Swipe: Slide your finger up, down, left, and right anywhere on the screen to change the direction 2. Tap: Tap the location around the robot to fire. Notes: Internet is must to play this game.
DualGrid
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DualGrid is a puzzle game where you solve the same board using two different sets of rules. In COLOR MODE, clear groups of two or more adjacent tiles of the same color. Tiles fall after each move, and new tiles refill the board. In PIPE MODE, follow connected pipes and guide the character from the start to the goal. Switch between the two modes to reshape the board and open a path forward. As you progress, new mechanics appear, including rotating tiles, wild colors, one-way valves, frozen tiles, garbage tiles, and checkpoints. With intuitive touch controls, DualGrid is easy to enjoy in a quick session or as a deeper puzzle challenge.
Screenshots
Verdict
The clearest difference is in-app purchases: DualGrid at none against Gem Mining Robot's 5. DualGrid also leads on update cadence (every 10 days vs every 5 weeks) and iOS requirement (15.0 vs 17.6). On price, ads 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. Gem Mining Robot sells 5 one-off in-app purchases. DualGrid asks for nothing beyond the download.
Gem Mining Robot ships an update every 5 weeks, DualGrid every 10 days. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.
| Parameter | Gem Mining Robot | DualGrid |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 10 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, Mac | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | AOBO Co.,Ltd | KENTO ADACHI |
In-app purchases
Gem Mining Robot
- Level 2$0.99
- Level 3$0.99
- Level 4$0.99
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- Level 5$0.99
- Level 6$0.99
DualGrid
No in-app purchases









