# Reaction Time vs Tower Grid

The clearest difference is in-app purchases: Tower Grid at none against Reaction Time's 1. Tower Grid also leads on update cadence (every 4 days vs every 3 months). Reaction Time's advantage is device support (5 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Reaction Time sells 1 one-off in-app purchase. Tower Grid asks for nothing beyond the download.

Reaction Time ships an update every 3 months, Tower Grid every 4 days. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Reaction Time | Tower Grid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tower-grid/id6758411374/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 10 MB | 4 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KidDotCo](https://appshunter.io/developer/819246599) | [Zachi Attia](https://appshunter.io/developer/1872794856) |

## What reviewers say

### Reaction Time

[App page](https://appshunter.io/ios/app/reaction-time-tap-zero-zero/id1090740861)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Can You Find The Cheese? | $1.99 | one-time |


### Tower Grid

[App page](https://appshunter.io/ios/app/tower-grid/id6758411374)

A minimalist logic puzzle game that tests your planning, pattern recognition, and spatial reasoning skills. Place towers on a grid to satisfy simple rules, with no timers or guessing required. Enjoy handcrafted puzzles with unique solutions that offer a fair and satisfying challenge.

**Highlights:** Minimalist logic puzzles, Tests planning and spatial reasoning, No timers or guessing, Handcrafted puzzles with unique solutions, Gradually increasing difficulty, Clean, distraction-free design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Time free?

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

### Is Tower Grid free?

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

### Do Reaction Time or Tower Grid have ads?

Neither Reaction Time nor Tower Grid shows ads.

### Which is updated more often, Reaction Time or Tower Grid?

Reaction Time ships an update every 3 months, and Tower Grid every 4 days. Most recently, Reaction Time was updated on November 2, 2026 and Tower Grid on October 25, 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.*