# Diamond Fighting Online vs UnderAttack

The clearest difference is ads: Diamond Fighting Online at none against UnderAttack's shown. Diamond Fighting Online also leads on iOS requirement (9.0 vs 16.4). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Diamond Fighting Online sells 3 one-off in-app purchases and UnderAttack sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Diamond Fighting Online ships an update every 8 months, UnderAttack every 4 months. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Diamond Fighting Online | UnderAttack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (45 ratings)](https://appshunter.io/ios/app/diamond-fighting-online/id1080520134/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 98.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 88 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thuong Dinh](https://appshunter.io/developer/1019632476) | [OGULCAN SACLI](https://appshunter.io/developer/1855149869) |

## What reviewers say

### Diamond Fighting Online

[App page](https://appshunter.io/ios/app/diamond-fighting-online/id1080520134)

Engage in strategic match-3 battles against monsters or players worldwide. Master diamond combinations to unleash powerful attacks, boost your defense, and gain health. Experience thrilling challenges with stunning graphics and smooth gameplay.

**Highlights:** Match-3 puzzle combat, PvP and PvE game modes, Special diamond combinations, Power-up mechanics, Hundreds of levels, Smooth graphics and effects

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package 20,000Coins | $0.99 | one-time |
| Package 50,000Coins | $1.99 | one-time |
| Package 150,000Coins | $4.99 | one-time |


### UnderAttack

[App page](https://appshunter.io/ios/app/underattack-idle-td/id6756351933)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Gem | $0.99 | one-time |
| 130 Gem | $1.99 | one-time |
| Starter Pack | $2.99 | one-time |
| Adventurer Bundle | $4.99 | one-time |
| 350 Gem | $4.99 | one-time |
| 650 Gem | $7.99 | one-time |
| Veteran Pack | $9.99 | one-time |
| Dreadnought | $9.99 | one-time |
| 1500 Gem | $14.99 | one-time |


## Frequently asked questions

### Is Diamond Fighting Online free?

Diamond Fighting Online is free to download, with in-app purchases available.

### Is UnderAttack free?

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

### Do Diamond Fighting Online or UnderAttack have ads?

UnderAttack shows ads; Diamond Fighting Online does not.

### Which is updated more often, Diamond Fighting Online or UnderAttack?

Diamond Fighting Online ships an update every 8 months, and UnderAttack every 4 months. Most recently, Diamond Fighting Online was updated on November 6, 2026 and UnderAttack on October 30, 2026.

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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.*