# Castle Master TD vs Mech TD

The clearest difference is iOS requirement: Castle Master TD at 12.0 against Mech TD's 16.0. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Castle Master TD sells 9 one-off in-app purchases and Mech TD sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Castle Master TD against 4.6 for Mech TD. Both are backed by a comparable volume of ratings — 152 and 124 respectively. Written reviews split almost evenly too, at 74% and 73% positive.

Both ship on a similar rhythm, roughly weekly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Castle Master TD | Mech TD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (152 ratings)](https://appshunter.io/ios/app/castle-master-td/id6450975685/reviews) | **[4.6 (124 ratings)](https://appshunter.io/ios/app/mech-td-space-war/id6463076238/reviews)** |
| Number of ratings | **152** | 124 |
| Positive reviews | **73.7% of reviews** | 73.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 298 MB | 326 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [Cezary Rajkowski](https://appshunter.io/developer/449740164) | [涓 梅](https://appshunter.io/developer/1691042897) |

## What reviewers say

### Castle Master TD

[App page](https://appshunter.io/ios/app/castle-master-td/id6450975685)

Build powerful structures and plan strategic defenses to engage in epic battles against relentless enemies. Your choices shape your kingdom's destiny in this test of strength, strategy, and survival.

**Highlights:** Fortify your castle, Build powerful structures, Plan strategic defenses, Engage in epic battles, Test strength and strategy, Ensure castle survival

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peasant Gems Pack | $0.99 | one-time |
| Mini Gem Pack | $2.99 | one-time |
| Starter Pack | $2.99 | one-time |
| Knight Gems Pack | $4.99 | one-time |
| Baron Gems Pack | $9.99 | one-time |
| Premium Offer | $9.99 | one-time |
| Earl Gems Pack | $29.99 | one-time |
| Duke Gems Pack | $59.99 | one-time |
| King Gems Pack | $99.99 | one-time |


### Mech TD

[App page](https://appshunter.io/ios/app/mech-td-space-war/id6463076238)

Command mechs in a tower defense narrative, battling alien insects and the Empire. Explore diverse modes, customize units, and utilize unique skills across multiple maps. Experience intense battles with simple controls and dynamic jumping mechanics.

**Highlights:** Story-driven tower defense mode, Intense survivor mode, Variety of battle modes, Command 6 unique mech commanders, Customize unit colors, Utilize random skills and battle tech, 7 distinct maps

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| starter_pack_1 | $0.99 | one-time |
| starter_pack_3 | $0.99 | one-time |
| purchase the full game content | $1.99 | one-time |
| R&D coin pack 1 | $1.99 | one-time |
| starter_pack_4 | $1.99 | one-time |
| starter_pack_2 | $1.99 | one-time |
| One month no ads | $5.99 | one-time |
| R&D coin pack 2 | $7.99 | one-time |
| permanent VIP | $9.99 | one-time |
| gold vip | $12.99 | one-time |


## Frequently asked questions

### Is Castle Master TD free?

Castle Master TD is free to download, with in-app purchases available.

### Is Mech TD free?

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

### Which has better reviews, Castle Master TD or Mech TD?

Mech TD is rated higher. Castle Master TD averages 4.5 out of 5 from 152 ratings, while Mech TD averages 4.6 from 124 ratings.

### Do Castle Master TD or Mech TD have ads?

Both Castle Master TD and Mech TD show ads.

### Which is updated more often, Castle Master TD or Mech TD?

Castle Master TD ships an update weekly, and Mech TD weekly. Most recently, Castle Master TD was updated on November 3, 2026 and Mech TD on November 3, 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.*