# MDS vs AI TD

The clearest difference is ads: MDS at none against AI TD's shown. AI TD's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. MDS sells 7 one-off in-app purchases and AI TD sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

MDS ships an update monthly, AI TD fortnightly. The most recent releases landed on October 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | MDS | AI TD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Ad-supported |
| Size | 171 MB | 215 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [Bruce Mattison](https://appshunter.io/developer/1786343567) | [Hot Yeti Studio OU](https://appshunter.io/developer/1643923250) |

## What reviewers say

### MDS

[App page](https://appshunter.io/ios/app/mds-tdgambit/id6739622461)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 GambitAx Gems | $0.99 | one-time |
| Hard and Insane Difficulties | $0.99 | one-time |
| Chapter 3 Maps | $1.99 | one-time |
| 300 GambitAx Gems | $1.99 | one-time |
| Chapter 1 Maps | $2.99 | one-time |
| Chapter 2 Maps | $2.99 | one-time |
| Play Maps in Any Order | $3.99 | one-time |


### AI TD

[App page](https://appshunter.io/ios/app/ai-td/id6740579258)

Defend humanity from an AI takeover by eliminating enemy forces. Upgrade your defenses and unlock new powers as you progress through increasingly challenging levels.

**Highlights:** Eliminate AI enemies, Upgrade defenses, Gain new powers, Humanity's savior theme, Challenging gameplay

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Super Revive Pack 1 | $1.99 | one-time |
| Mini Pack | $2.99 | one-time |
| No Ads | $6.99 | one-time |
| Tower Boost Pack 1 | $6.99 | one-time |
| Large Pack | $7.99 | one-time |
| No Ads Bundle | $9.99 | one-time |
| Full Pack | $17.99 | one-time |


## Frequently asked questions

### Is MDS free?

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

### Is AI TD free?

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

### Do MDS or AI TD have ads?

AI TD shows ads; MDS does not.

### Which is updated more often, MDS or AI TD?

MDS ships an update monthly, and AI TD fortnightly. Most recently, MDS was updated on October 28, 2026 and AI TD on October 7, 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.*