Random Timer Generator vs Alertcal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Random Timer Generator
This app generates random countdown timers within a specified time range. It's versatile for games, meditation, exercise, studying, and more. Customize sounds, vibrations, and looping modes for a personalized experience.
- Configurable random countdowns
- Adjustable time ranges (0 seconds to 24 hours)
- Background operation support
- Customizable sound and vibration alerts
- Upload custom alarm sounds
- Looping mode with break periods
- Progress tracking for loops
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Random Timer Generator is a random countdown timer that allows you to input a Minimum and Maximum time, and then it will start a random timer somewhere within that range. Random Timer Generator allows you to create random timer countdowns, which makes it great as an exercise timer, a meditation timer, a random timer for studying, a Musical Chairs timer, or as a timer for Hot Potato style games like Catch Phrase, The Last Word, Pass The Bomb... or Hot Potato. ************************************ FEATURES * Fully configurable random countdowns with adjustable seconds, minutes, and hours * Supports timer durations from 0 seconds to 24 hours * The timer and alarm will still run properly even if your screen is locked or you have another app open * Enable or disable countdown noise options * Enable or disable vibrations when the timer ends * Enable or disable showing how much time is left while the random timer is going * Sounds an alarm when the timer hits 0. Choose from different alarm noise options, or go silent with vibrate-only option * Upload your own sound or song as the countdown sound, the sound when timer ends, or the sound when break period ends * Animates and vibrates when going off, so you'll notice the timer expiring in a noisy situation * Looping mode - set a random timer to go off repeatedly, so the next random timer starts again after one ends. You can even add a "break period between random timers", where you can set how many seconds you'd like as a break between random timers when Loop mode is on. * If Looping mode is on, it will tell you how many loops you have completed ************************************ Random Timer Generator is great for: * Games There are many Hot Potato style games where you don't want to be the person holding the ball (or potato) when the random timer goes off. Random Timer Generator works great for these Hot Potato style games, such as Catch Phrase, The Last Word, Pass The Bomb... or Hot Potato. Also great for board games where you need a random timer * Meditation When meditating, you may want to set a timer... but not know exactly when that timer will end (for example, a random timer that will go off somewhere between 10 and 30 minutes). Random Timer Generator works great for that. * Exercise While exercising, you may want to have a random timer for doing certain exercises, but not know exactly how long you will need to do it for. For example, you could set a minimum of 15 seconds and a maximum of 60 seconds while holding a forearm plank. * Musical Chairs With Random Timer Generator, you can set a random timer (for example between 5 seconds and 30 seconds) to go off for playing Musical Chairs. You can even have it playing songs while the timer is counting down. * Studying Andrew Huberman has popularized the Gap Effect or Spacing Effect method of studying, where you have a random timer go off every now and then while studying, to give yourself a short break. During that break, your brain replays what you were just learning at hyper speed.
Alertcal
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Never miss an important event again. Alertcal transforms your calendar notifications into real alarms that demand your attention. Instead of a quiet push notification that disappears, you get a powerful alarm before your event begins. Meetings. School pickups. Workouts. Flights. Deadlines. If it is on your calendar, you will be ready. How it works: Connect your existing calendar Choose how many minutes before an event you want to be alerted Receive a loud, persistent alarm that makes sure you act Features: Custom alarm timing for each event Strong alerts that stand out from normal notifications Snooze support Works with your current calendar setup Clean, simple interface Stop relying on notifications you ignore. Start using alarms that keep you accountable. Alertcal helps professionals, parents, students, and busy people stay prepared and on time. Be early. Be prepared. Be aware.
Screenshots
Verdict
The clearest difference is price: Random Timer Generator at Free against Alertcal's $1.99. Random Timer Generator also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). Alertcal's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). On ads 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
Random Timer Generator is free to download; Alertcal costs $1.99 up front. Random Timer Generator sells 1 one-off in-app purchase. Alertcal asks for nothing beyond the download.
Random Timer Generator ships an update every 2 months, Alertcal every 3 weeks. The most recent releases landed on October 7, 2026 and September 24, 2026 respectively.
| Parameter | Random Timer Generator | Alertcal |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.8 (56 ratings) — better | — |
| Positive reviews | 82.9% of reviews | — |
| Number of ratings | 56 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 30 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | OneUp App LLC | Scott Foster |
Bugs and requests
Random Timer Generator
Reported bugs
8 issues- App consumed most battery without usage
- Counter freezes at random times
- Notifications (sound/iWatch) stop working after a short period
- Custom sounds are cut off when looping and using breaks
- Alarm always includes vibrate, no sound alone option
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- App forces portrait mode, removing split view support
- Volume changes on its own
- Alarm sound plays something different than selected
Requested features
10 requests- Make counts/reps font bigger
- Allow setting 'active hours' for timer
- Option for 'weekdays only' timer scheduling
- Save and name various timers and settings
- Upload, delete, and select among multiple sounds
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- Display completed time until next timer starts
- Apple Watch companion app
- Dark mode option
- Improve sound cutting off with custom sounds and looping
- Option for sound alone alarm without vibrate
Alertcal
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Random Timer Generator
- Lifetime access$7.99
Alertcal
No in-app purchases
Questions
Is Random Timer Generator free?
Is Alertcal free?
Do Random Timer Generator or Alertcal have ads?
Which is updated more often, Random Timer Generator or Alertcal?
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