Relarm vs ColdStart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Relarm
This app automates the creation of multiple alarms with customizable intervals and puzzle-based dismissal to prevent oversleeping. It offers persistent sounds, random playback, and theme options to help users wake up effectively.
- Automated batch alarm setup
- Customizable interval and count
- Puzzle unlock to dismiss alarms
- Persistent alarm sounds
- Random sound playback
- Dark/Light mode themes
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No More Oversleeping—Wake Up with Relarm. 6:00, 6:05, 6:10, 6:15... Sound familiar? Setting alarms every 5 minutes? If you're not a morning person and keep hitting snooze or sleeping through alarms, you've probably set multiple alarms—only to dismiss them one by one when you finally wake up. With Relarm, set multiple alarms automatically with just one tap. Plus, it's packed with features designed to help you actually wake up. Customize interval and count: From intense 1-minute intervals to gentle 10-minute gaps, 2-3 times. Puzzle unlock required: A simple puzzle prevents you from dismissing alarms while half-asleep. Persistent alarm sounds: Hard-to-ignore alerts that keep ringing. Random sound playback: Different sounds for each alarm so you don't get used to them. Test playback: Preview volume to avoid setup mistakes. ▼ Perfect For You If... Mornings are your nemesis One alarm is never enough You set alarms every 5 or 10 minutes You desperately want to stop oversleeping ▼ Key Features 【Easy Batch Setup】 Just choose start time, number of alarms (up to 20), and interval. No more adding alarms one by one. Your last settings for count, interval, and sound are automatically saved. 【Puzzle Unlock to Prevent Oversleeping】 You need to solve a puzzle to dismiss the alarm. No more accidentally turning off alarms while still half-asleep. 【Multiple Sounds】 Choose from a variety of alarm sounds. Random playback mode helps prevent sound fatigue. 【Dark / Light Mode】 Switch between a sleep-friendly dark theme and a bright, energizing light theme. Premium members can set automatic theme switching based on time of day. ▼ Pricing Basic features are free. Upgrade to Premium to unlock: Unlimited alarm settings Ad-free experience Automatic theme switching by time of day No More Oversleeping—Wake Up with Relarm. Terms of Use: https://u-i-apps.com/relarm/terms.html
ColdStart
This alarm app replaces standard beeps with realistic engine sounds that escalate in intensity. It features a dark, cockpit-style interface with a live tachometer and offers various engine sounds as in-app purchases. The app prioritizes user privacy with no account or data collection.
- Realistic engine cranking sounds
- Escalating alarm intensity
- Live tachometer display
- Pit stop snooze with countdown
- In-app engine sound purchases
- Privacy-focused, no data collection
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Your alarm doesn't beep. It starts. ColdStart replaces the soulless beep-beep-beep with a cold engine cranking to life inches from your ear. Every alarm is a real engine recording built as an escalation: cold start and idle first, then climbing revs, then full redline with the limiter bouncing — and it loops until you deal with it. HOW A COLDSTART MORNING WORKS • Your engine cold-starts at the time you set — delivered by iOS's native alarm system, so it rings on the Lock Screen even with the silent switch on • Snooze is a Pit Stop: the engine cuts, a 9-minute countdown runs on your Lock Screen and Dynamic Island, then it re-fires • Cut Engine ends the session — until tomorrow THE GARAGE — 15 CAR ENGINES Free: American V8 · Turbo Straight-Six · Flat-Six Classic Pro: Flat-Six Redline · Flat-Six Track Spec · Flat-Six Apex · Flat-Six GT · Boosted Six · Stututu · Italian V12 · Supercar V12 · Italian V8 · Straight Pipe · Pops & Bangs · Anti-Lag Preview every engine in full quality before you buy. One purchase unlocks the whole garage — forever. No subscription, no account, no ads. BUILT LIKE AN INSTRUMENT CLUSTER • Dark cockpit design with a live tachometer that runs idle → revs → redline while your alarm rings • Live Activity pit-stop countdown on the Lock Screen and Dynamic Island • Repeat schedules, labels, and one-tap arming PRIVACY, PROPERLY No account. No analytics. No data collected. Your alarms never leave your phone. Set an alarm tonight. Wake up at redline tomorrow.
Screenshots
Verdict
The clearest difference is rating: Relarm at 5.0 against ColdStart's 2.0. ColdStart's advantage is update cadence (daily vs monthly). On price, ratings volume, ads and in-app purchases 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. Relarm sells 1 one-off in-app purchase and ColdStart sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Relarm holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Relarm ships an update monthly, ColdStart daily. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Relarm | ColdStart |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 2.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 26.1 | 26.1 |
| Further details — not scored | ||
| Size | 55 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuji Ishibashi | Mehmet Cakmaz |
In-app purchases
Relarm
- プレミアムプラン$2.99
ColdStart
- Unlock All Car Engines$6.99









