# Reaction Timer Game vs UDLR

The clearest difference is ads: UDLR at none against Reaction Timer Game's shown. UDLR also leads on review sentiment (95% vs 63%) and rating (4.6 vs 4.2). Reaction Timer Game's advantage is update cadence (every 5 months vs every 15 months) and device support (6 vs 4). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Reaction Timer Game sells 2 one-off in-app purchases and UDLR sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UDLR holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 71 and 36 respectively. Written reviews point the same way: 63% of Reaction Timer Game's written reviews are positive against 95% of UDLR's.

Reaction Timer Game ships an update every 5 months, UDLR every 15 months. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Reaction Timer Game | UDLR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (71 ratings)](https://appshunter.io/ios/app/reaction-timer-game/id572319874/reviews) | **[4.6 (36 ratings)](https://appshunter.io/ios/app/udlrswipe/id686245456/reviews)** |
| Number of ratings | **71** | 36 |
| Positive reviews | 62.5% of reviews | **95.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 15 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 19 MB | 78 MB |
| Requires iOS | 15.6 | **7.0** |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch, Vision Pro** | iPhone, iPad, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Coomer](https://appshunter.io/developer/1006451481) | [11:11 Studios](https://appshunter.io/developer/525921215) |

## What reviewers say

### Reaction Timer Game

[App page](https://appshunter.io/ios/app/reaction-timer-game/id572319874)

Test your reflexes with this game where the goal is to stop a timer exactly on zero. It features multiple difficulty levels and quick rounds, making it perfect for playing anytime, anywhere, even offline.

**Highlights:** Stop timer exactly on zero, Multiple difficulty levels, Quick play rounds, Offline play supported, Single and multi-timer challenges

**Features:** Apple Watch app, iMessage stickers

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Games | $0.49 | one-time |
| Nudges | $0.99 | one-time |


### UDLR

[App page](https://appshunter.io/ios/app/udlrswipe/id686245456)

A minimalist swipe-based game where players match colors to directional swipes. Earn more time by swiping correctly; run out of time or swipe wrong to end the game. Offers a synesthetic experience with multiple device support.

**Highlights:** Swipe-based gameplay, Color-to-direction matching, 3D Touch support, Synesthesia mechanics, Minimalist design, GameCenter integration, iCloud sync

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |

**What reviewers like**

- 👍 Addictive gameplay
- 👍 Simple and fun
- 👍 Great time passer
- 👍 Challenging experience
- 👍 Creative concept

**What reviewers complain about**

- 🐛 Crashes sometimes
- 🐛 Freezes and shuts down
- 🐛 Issues with 3D Touch accessibility
- 🐛 Needs more difficulty options
- 🐛 Boring for some players

**Reported bugs**

- Keeps freezing
- Shuts itself down
- 3D Touch accessibility causing issues
- Pauses constantly

**Requested features**

- More phases or options
- Different difficulty levels
- Multi-touch support
- Background ambiance
- More games from developers


## Frequently asked questions

### Is Reaction Timer Game free?

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

### Is UDLR free?

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

### Which has better reviews, Reaction Timer Game or UDLR?

UDLR is rated higher. Reaction Timer Game averages 4.2 out of 5 from 71 ratings, while UDLR averages 4.6 from 36 ratings.

### Do Reaction Timer Game or UDLR have ads?

Reaction Timer Game shows ads; UDLR does not.

### Which is updated more often, Reaction Timer Game or UDLR?

Reaction Timer Game ships an update every 5 months, and UDLR every 15 months. Most recently, Reaction Timer Game was updated on October 8, 2026 and UDLR on October 15, 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.*