# Tower Defense vs ROTGRADE

The clearest difference is in-app purchases: Tower Defense at none against ROTGRADE's 6. Tower Defense also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). ROTGRADE's advantage is iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. ROTGRADE sells 6 one-off in-app purchases. Tower Defense asks for nothing beyond the download.

Tower Defense ships an update every 2 days, ROTGRADE every 2 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Tower Defense | ROTGRADE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/tower-defense-containment/id6788992062/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 418 MB | 138 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Terrestream](https://appshunter.io/developer/1833687298) | [Two Joes Gaming](https://appshunter.io/developer/1046277815) |

## What reviewers say

### Tower Defense

[App page](https://appshunter.io/ios/app/tower-defense-containment/id6788992062)

Engage in a sci-fi tower defense game where an adaptive AI learns your strategies and counters them. Manually aim every shot, manage upgrades, and defend your core through increasingly challenging levels with unique enemy behaviors and interface hacks.

**Highlights:** Adaptive AI opponent, Manual aiming and shot control, Mid-wave upgrades, Interface hacking mechanics, Persistent research system, Sentry mode for AFK defense, Cooperative Alliance Operations

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

**In-app purchases:** none


### ROTGRADE

[App page](https://appshunter.io/ios/app/rotgrade/id6811130323)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spare Change | $0.99 | one-time |
| Buggy Money | $2.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Sedan Money | $4.99 | one-time |
| Muscle Money | $9.99 | one-time |
| The Camper | $19.99 | one-time |


## Frequently asked questions

### Is Tower Defense free?

Tower Defense is free to download, with no in-app purchases.

### Is ROTGRADE free?

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

### Do Tower Defense or ROTGRADE have ads?

ROTGRADE shows ads; Tower Defense does not.

### Which is updated more often, Tower Defense or ROTGRADE?

Tower Defense ships an update every 2 days, and ROTGRADE every 2 weeks. Most recently, Tower Defense was updated on October 31, 2026 and ROTGRADE on November 6, 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.*