Ultimate Robot Merge vs Sky Stackers
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Ultimate Robot Merge
Engage in strategic battles by gathering resources and merging your robots to create powerful upgrades. Overcome adversaries and dominate the arena in this engaging merge game.
- Gather resources
- Merge robots
- Upgrade robots
- Battle adversaries
- Strategic gameplay
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Beat your adversaries Gather resources Merge and Upgrade your Robot
Sky Stackers
A fast-paced arcade game where players precisely drop blocks to build a tower as high as possible. The challenge increases with height, offering endless score chasing and quick, satisfying stacking sessions.
- One-touch gameplay
- Endless score chasing
- Satisfying stacking mechanics
- Rewarded continues
- Quick play sessions
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Sky Stackers is a fast and addictive arcade stacking game where precision and timing matter. Drop blocks carefully, build your tower higher, and keep the stack from collapsing. The higher you climb, the harder it gets. Features: • Simple one-touch gameplay • Endless score chasing • Smooth and satisfying stacking mechanics • Rewarded continues • Premium option to remove ads • Quick sessions, perfect anytime play Can you reach the sky?
Screenshots
Verdict
The clearest difference is rating: Sky Stackers at 5.0 against Ultimate Robot Merge's 4.3. Sky Stackers also leads on ads (none vs shown) and update cadence (daily vs every 2 months). Ultimate Robot Merge's advantage is in-app purchases (none vs 1) and ratings volume (95 vs 4). On price, monetization model 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. Sky Stackers sells 1 one-off in-app purchase. Ultimate Robot Merge asks for nothing beyond the download.
Sky Stackers holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Ultimate Robot Merge has 95 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 83% of Ultimate Robot Merge's written reviews are positive against 100% of Sky Stackers's.
Ultimate Robot Merge ships an update every 2 months, Sky Stackers daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Ultimate Robot Merge | Sky Stackers |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (95 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 95 — better | 4 |
| Update frequency | Every 2 months | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 236 MB | 8 MB |
| Age rating | 12+ | 12+ |
| Developer | Yso Corp | Zackery Allen |
Customer experience
Ultimate Robot Merge
Sky Stackers
In-app purchases
Ultimate Robot Merge
No in-app purchases
Sky Stackers
- Premium Upgrade$0.99
Questions
Is Ultimate Robot Merge free?
Is Sky Stackers free?
Which has better reviews, Ultimate Robot Merge or Sky Stackers?
Do Ultimate Robot Merge or Sky Stackers have ads?
Which is updated more often, Ultimate Robot Merge or Sky Stackers?
Other comparisons
