# Pi Generator vs Advertisement Reaction Time

The clearest difference is review sentiment: Pi Generator at 100% against Advertisement Reaction Time's 0%. Pi Generator also leads on rating (4.7 vs 2.0) and ratings volume (3 vs 1). Advertisement Reaction Time's advantage is in-app purchases (none vs 1) and update cadence (every 5 days vs every 10 days). On price, ads, monetization model and device support there is nothing between them.

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

Pi Generator holds the better App Store score, 4.7 against 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 100% of Pi Generator's written reviews are positive against 0% of Advertisement Reaction Time's.

Pi Generator ships an update every 10 days, Advertisement Reaction Time every 5 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Pi Generator | Advertisement Reaction Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/pi-generator/id1083533056/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/advertisement-reaction-time/id1472492774/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Free | Free |
| Size | 35 MB | 40 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Duenas](https://appshunter.io/developer/1083533055) | [Ho Kit Cheung](https://appshunter.io/developer/1471608505) |

## What reviewers say

### Pi Generator

[App page](https://appshunter.io/ios/app/pi-generator/id1083533056)

This app generates a large number of pi digits, up to 100,000. It also offers a practice mode for learning pi. Test your device's capabilities with extensive pi calculations.

**Highlights:** Generates up to 10,000 digits of pi, View up to 100,000 digits, Practice learning pi, Device performance testing

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### Advertisement Reaction Time

[App page](https://appshunter.io/ios/app/advertisement-reaction-time/id1472492774)

Test your reflexes against sudden full-screen ads. Tap the screen as many times as possible before an advertisement appears to achieve a high clicks-per-second score. Challenge friends and improve your reaction time.

**Highlights:** Test reaction time against ads, Track clicks per second, Challenge friends, Improve reflexes, Random ad pop-ups

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pi Generator free?

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

### Is Advertisement Reaction Time free?

Advertisement Reaction Time is free to download, with no in-app purchases.

### Which has better reviews, Pi Generator or Advertisement Reaction Time?

Pi Generator is rated higher. Pi Generator averages 4.7 out of 5 from 3 ratings, while Advertisement Reaction Time averages 2.0 from 1 ratings.

### Do Pi Generator or Advertisement Reaction Time have ads?

Neither Pi Generator nor Advertisement Reaction Time shows ads.

### Which is updated more often, Pi Generator or Advertisement Reaction Time?

Pi Generator ships an update every 10 days, and Advertisement Reaction Time every 5 days. Most recently, Pi Generator was updated on October 24, 2026 and Advertisement Reaction Time on October 14, 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.*