# Reactor Party — Who reacts first?

> Who reacts first? (iPhone/iPad app by Stavros Petropoulos.)

- Source: https://appshunter.io/ios/app/reactor-party/id6775875142 (this page in markdown: same URL + `.md`)
- Developer: [Stavros Petropoulos](https://appshunter.io/developer/1895016415)
- Category: Games, Entertainment, Casual, Trivia
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 18.6 · 7 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, European Spanish
- Released: 2026-06-06
- Data updated: 2026-06-16
- User reviews in markdown: https://appshunter.io/ios/app/reactor-party/id6775875142/reviews.md

## What is Reactor Party?

Reactor Party is the reaction duel for iPhone and iPad: a stimulus appears, one clear rule applies – and only whoever taps first and correctly takes the points. One rule, one button, no second chance.

HOW TO PLAY
Every round shows a stimulus – a colour word, a country outline, tumbling dice. Exactly one "tap" rule applies. The moment someone taps, the round is over for everyone.
• Right & first: +100 points, including your reaction time in milliseconds
• Wrong tap: −50 points – and the round still ends
• Some rounds are traps: holding back can win

10 MINI-GAMES
From pure reaction to brain work:
• Word & Colour
• Outline & Country
• Compare population & area
• Dice Balance
• Mental Maths
• Symbol Pair
• Flag & Country
• Flash Count
• Pure Reaction

AGAINST BOTS OR ONLINE
• 1–3 bots in three difficulties – from easy-going to merciless
• Online duel for 2–4 players: quick match or a private room with a 4-digit code
• Game Center leaderboard for your online wins

FAIR BY DESIGN
Online, your local reaction time decides – not whose internet is faster. A better connection gives no advantage.

ALSO ON BOARD
• 6 languages, switchable live
• Detailed statistics: hits, misfires, best & average reaction time
• Crisp haptics and sound
• No account needed – your progress stays local on your device

Fast enough? Download Reactor Party and find out.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |



## Version history (last 2 releases)

### 1.1 — 2026-06-08

What's new in version 1.1:

• Seven new minigames: lightning-fast reaction tests (Grid Flood, Symbol Hunt, Dead Heat) and tricky recognition duels (Capital & Country, Mirror Image, Number Run, Clock Match)
• New splash screen with faster loading
• Lots of small improvements and bug fixes

Have fun reacting!

### 1.0 — 2026-06-06

No release notes.

## More apps by Stavros Petropoulos

- [Buzzer Knockout](https://appshunter.io/ios/app/buzzer-knockout/id6773007504)

All apps by Stavros Petropoulos: https://appshunter.io/developer/1895016415

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-16.*