# Mechangelion vs Stack Diamond Gem 3D

The clearest difference is review sentiment: Mechangelion at 73% against Stack Diamond Gem 3D's 0%. Mechangelion also leads on rating (4.6 vs 1.0) and ratings volume (10K vs 1). Stack Diamond Gem 3D's advantage is in-app purchases (none vs 10) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Mechangelion sells 10 in-app purchases, starting at $5.99 per 7 days. Stack Diamond Gem 3D asks for nothing beyond the download.

Mechangelion holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Mechangelion has 10K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 73% of Mechangelion's written reviews are positive against 0% of Stack Diamond Gem 3D's.

## The numbers

| Metric | Mechangelion | Stack Diamond Gem 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10K ratings)](https://appshunter.io/ios/app/mechangelion-robot-fighting/id1668157669/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/stack-diamond-gem-3d/id6446627202/reviews) |
| Number of ratings | **10K** | 1 |
| Positive reviews | **72.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Best chart rank | **#177** | — |
| Size | 585 MB | 222 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [MOONEE PUBLISHING LTD](https://appshunter.io/developer/1469957859) | [Atif Rana](https://appshunter.io/developer/1637064118) |

## What reviewers say

### Mechangelion

[App page](https://appshunter.io/ios/app/mechangelion-robot-fighting/id1668157669)

**Currently charting:** #177 Top Free · Adventure (US App Store)

Engage in intense robot battles against war robots and giant dinosaurs. Upgrade your hero with powerful weapons and defense to survive the mech arena. Develop strategic combat skills to defeat enemies and become a champion.

**Highlights:** Robot vs. robot combat, Dinosaur battles, Robot upgrades and weapons, Strategic combat maneuvers, One-on-one battles, Mech arena challenges

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly VIP Subscription | $5.99 | per 7 days |
| Weekly VIP Subscription | $5.99 | per 7 days |
| Monthly VIP Subscription | $15.99 | per month |
| 20 Cores | $0.99 | one-time |
| upgrade item grey to green | $0.99 | one-time |
| Prime Mech Skin Coupon | $1.99 | one-time |
| 125 Cores | $4.99 | one-time |
| Prime Mech Skin | $7.99 | one-time |
| Starter Pack | $7.99 | one-time |
| PREMIUM PACK | $7.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive gameplay
- 🚀 No WiFi required
- 💎 Great value for money
- 🎨 Satisfying customization options

**What reviewers complain about**

- 🔍 Repetitive content
- 🔋 Excessive ads
- 🐛 Glitches and bugs
- 🤖 Unbalanced difficulty

**Reported bugs**

- Revive button not working
- Audio glitches
- Mech model disappearing
- Attacks not registering

**Requested features**

- More enemy and boss variety
- Ability to replay defeated bosses
- Dual-wield weapon option
- Customizable mech parts and abilities


### Stack Diamond Gem 3D

[App page](https://appshunter.io/ios/app/stack-diamond-gem-3d/id6446627202)

Craft beautiful jewelry like rings and necklaces by stacking gems. Test your precision and quick thinking in this addictive game with increasing challenges.

**Highlights:** Jewelry making simulation, Stacking gems, Precision aiming gameplay, Increasing difficulty levels, Ruby rings, diamond rings, crystal necklaces, Addictive gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mechangelion free?

Mechangelion is free to download, with in-app purchases available.

### Is Stack Diamond Gem 3D free?

Stack Diamond Gem 3D is free to download, with no in-app purchases.

### Which has better reviews, Mechangelion or Stack Diamond Gem 3D?

Mechangelion is rated higher. Mechangelion averages 4.6 out of 5 from 10K ratings, while Stack Diamond Gem 3D averages 1.0 from 1 ratings.

### Do Mechangelion or Stack Diamond Gem 3D have ads?

Both Mechangelion and Stack Diamond Gem 3D show ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*