Reaction Timer Game vs UDLR
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Reaction Timer Game
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.
- Stop timer exactly on zero
- Multiple difficulty levels
- Quick play rounds
- Offline play supported
- Single and multi-timer challenges
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Think YOU can beat Reaction Timer? Do you have lightning-fast reflexes? Prove it with the Reaction Timer game that will have you tapping, gasping, and celebrating (or groaning) every time you try to land exactly on zero. With multiple levels from “I Got This” to “Seriously?!” Start off simple with one timer, then rise through the challenges with two or three timers. Super-Short Rounds mean you can pick-up-and-play anytime you’ve got a spare moment, while you're on the train, waiting for a bus, or at a boring family event! Land a perfect zero for instant bragging rights and show off to your friends… or watch them crumble under the pressure! No WiFi or internet connection needed, perfect for killing time on the go - anywhere, anytime. Get ready for heart-pounding moments, frantic taps, and endless attempts to hit the elusive zero. Download now to discover if you have the reflexes of a ninja, or if you’ll be left chasing that perfect stop forever!
UDLR
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.
- Swipe-based gameplay
- Color-to-direction matching
- 3D Touch support
- Synesthesia mechanics
- Minimalist design
- GameCenter integration
- iCloud sync
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An ode to swiping. UDLR is a simple, but elegant, swipe based game with a pickup and play attitude. Get as many swipes as possible. Swipe in the correct direction to add time. If you run out of time or swipe incorrectly, it's game over. UDLR:SWIPE (iPhone) & UDLR:TAP (Apple Watch) are two similar, but unique, synesthetic experiences embracing the touch input of their respective devices. The premise is simple. Color = Direction With clever mastery and persistence, players begin naturally matching color to direction. Features/Gameplay • UDLR:TAP now on Apple Watch • 3D Touch support to Pause game • Multitasking features • Each color is a swiping direction • Synesthesia mechanics • Minimalist design • Compete with friends on GameCenter • Sync all devices with iCloud
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Reaction Timer Game | UDLR |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (71 ratings) | 4.6 (36 ratings) — better |
| Positive reviews | 62.5% of reviews | 95.3% of reviews — better |
| Number of ratings | 71 — better | 36 |
| Update frequency | Every 5 months — better | Every 15 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple TV, Apple Watch, Vision Pro — better | iPhone, iPad, iPod, Apple Watch |
| Requires iOS | 15.6 | 7.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Coomer | 11:11 Studios |
Customer experience
Reaction Timer Game
UDLR
Bugs and requests
Reaction Timer Game
Not enough reviews yet to summarise bugs or requests.
UDLR
Reported bugs
4 issues- Keeps freezing
- Shuts itself down
- 3D Touch accessibility causing issues
- Pauses constantly
Requested features
6 requests- More phases or options
- Different difficulty levels
- Multi-touch support
- Background ambiance
- More games from developers
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- Optimization for larger screens
In-app purchases
Reaction Timer Game
- Extra Games$0.49
- Nudges$0.99
UDLR
- Remove Ads$0.99
Questions
Is Reaction Timer Game free?
Is UDLR free?
Which has better reviews, Reaction Timer Game or UDLR?
Do Reaction Timer Game or UDLR have ads?
Which is updated more often, Reaction Timer Game or UDLR?
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