# Reflex Test & Reaction Time vs Block Stack

The clearest difference is update cadence: Block Stack at weekly against Reflex Test & Reaction Time's every 4 months. Reflex Test & Reaction Time's advantage is iOS requirement (14.0.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Reflex Test & Reaction Time sells 1 one-off in-app purchase and Block Stack sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Reflex Test & Reaction Time ships an update every 4 months, Block Stack weekly. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Reflex Test & Reaction Time | Block Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/block-stack-tower-builder/id6771109087/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 41 MB | 65 MB |
| Requires iOS | **14.0.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ethem Yavuz](https://appshunter.io/developer/1592978206) | [Michal Babicz](https://appshunter.io/developer/1865923848) |

## What reviewers say

### Reflex Test & Reaction Time

[App page](https://appshunter.io/ios/app/reflex-test-and-reaction-time/id6746488281)

Sharpen your mind and boost reaction time with engaging mini-games. Improve focus, speed, and cognitive agility through scientifically designed challenges. Track progress and aim for peak mental performance.

**Highlights:** 4 exciting mini-games, Reaction time tests, Focus and concentration training, Hand-eye coordination challenges, Progress tracking and stats, Personalized brain training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Block Stack

[App page](https://appshunter.io/ios/app/block-stack-tower-builder/id6771109087)

Tap to stack blocks and build the tallest tower possible. Achieve perfect hits for multipliers and unlock new visual themes. Complete missions and daily streaks to earn rewards and climb the leaderboards.

**Highlights:** One-tap block stacking gameplay, Multiplier system up to x25, 12+ unlockable visual themes, Perks to modify gameplay, Daily missions and streaks, Game Center leaderboards

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 Coins | $0.99 | one-time |
| 1,500 Coins | $1.99 | one-time |
| 5,000 Coins | $7.99 | one-time |
| 12,000 Coins | $14.99 | one-time |


## Frequently asked questions

### Is Reflex Test & Reaction Time free?

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

### Is Block Stack free?

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

### Do Reflex Test & Reaction Time or Block Stack have ads?

Both Reflex Test & Reaction Time and Block Stack show ads.

### Which is updated more often, Reflex Test & Reaction Time or Block Stack?

Reflex Test & Reaction Time ships an update every 4 months, and Block Stack weekly. Most recently, Reflex Test & Reaction Time was updated on October 8, 2026 and Block Stack on October 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*