Comparison

Interval Randomizer vs Pass Alarm

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Interval Randomizer

Features
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Train without falling into a predictable rhythm. Interval Randomizer creates changing work intervals inside the minimum and maximum range you choose. Set your timing, recovery and workout duration, then let every round develop differently. RANDOMIZED TRAINING - Random work intervals inside your selected range - Adjustable minimum and maximum work time - Custom recovery periods - Configurable total workout duration - Large live timer with clear work and recovery phases BUILT FOR SERIOUS TRAINING - HIIT workouts - Boxing and combat sports - Tabata sessions - MMA and martial arts conditioning - Sparring drills - Cardio and reaction training STAY CONSISTENT - Daily Challenges - Training streaks - XP and levels - Coins and rewards - Session statistics - Training-minute tracking - Save your favorite workout setups FAST DURING A WORKOUT The main controls stay visible so you can change your workout without digging through menus. Clear colors identify work, recovery, timing and progress at a glance. MADE FOR IPHONE AND IPAD Interval Randomizer includes dedicated layouts for iPhone and iPad, giving each device the space and controls appropriate for training. The core timer and Daily Challenges are free. Optional advertising supports continued development, with an available upgrade to remove ads.

About

Pass Alarm

Features
Read full description

Pass Alarm β€” The alarm you never turn OFF. Don't turn it OFF. Just skip today. Today stays silent. Tomorrow rings on time. β–  The problem with turning alarms OFF When you turn an alarm OFF today… it won't ring tomorrow either. You only notice when you oversleep. With Pass Alarm, you skip today only. Since the alarm stays ON, there's nothing to forget. β–  3 Key Features 1. Skip Today Only No turning OFF means no forgetting to turn it back ON. 2. Visual Queue See upcoming alarms and swipe to skip. 3. Auto-Skip Holidays Japanese national holidays supported. No waking up on days off. β–  How It Works 1. Set your alarm time and days 2. Tap "Skip Today" when you don't need it 3. Tomorrow it rings automatically β€” because you never turned it OFF β–  Pricing Core features are completely free: - Up to 3 alarms - Skip Today - Holiday skip - Queue view Pro (In-App Purchase): - Unlimited alarms - Consecutive alarms - Custom sounds - Priority support β–  Important Pass Alarm uses OS notification features. Notification permission is required. Alarms may not sound during Focus mode or Do Not Disturb. β–  Terms & Privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pass-alarm.nogeass.com/privacy

Screenshots

Interval Randomizer4 screens
Pass Alarm4 screens

Verdict

The call

The clearest difference is in-app purchases: Interval Randomizer at none against Pass Alarm's 2. Interval Randomizer also leads on ads (none vs shown). Pass Alarm's advantage is update cadence (daily vs monthly). On price, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Pass Alarm sells 2 in-app purchases, starting at $2.99 per month. Interval Randomizer asks for nothing beyond the download.

UpkeepUpdate frequency

Interval Randomizer ships an update monthly, Pass Alarm daily. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

Scorecard3 real differences Β· 3 level
Interval Randomizer versus Pass Alarm: the parameters behind the verdict, then further details
ParameterInterval RandomizerPass Alarm
PriceFreeFree
Update frequencyMonthlyDaily β€” better
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS18.217.0 β€” better
Further details β€” not scored
Size6 MB19 MB
Age rating4+4+
DeveloperHitfire Production ABno geass inc.

In-app purchases

None

Interval Randomizer

No in-app purchases

2 purchases

Pass Alarm

Subscriptions2
  • パスをラーム Pro(月鑍)7 Days trial$2.991 Month
  • パスをラーム Pro(年鑍)1 Month trial$22.991 Year

Questions

Is Interval Randomizer free?
Interval Randomizer is free to download, with no in-app purchases.
Is Pass Alarm free?
Pass Alarm is free to download, with in-app purchases available.
Do Interval Randomizer or Pass Alarm have ads?
Pass Alarm shows ads; Interval Randomizer does not.
Which is updated more often, Interval Randomizer or Pass Alarm?
Interval Randomizer ships an update monthly, and Pass Alarm daily. Most recently, Interval Randomizer was updated on October 6, 2026 and Pass Alarm on October 3, 2026.

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