Comparison

ondot timer|No vs Study Timer

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

Head to head
About

ondot timer|No

This app eliminates the need for time calculations by allowing you to set timers based on a desired end time or duration. It displays both the ringing time and remaining time at a glance, perfect for tasks and deadlines.

Highlights
  • Set timers by desired end time
  • Set timers by duration
  • See ringing time and time remaining
  • Save frequent timer presets
  • Apple Watch integration
  • Live Activity on Lock Screen/Dynamic Island
Features
Read full description

No math. Just enter the time you want it to ring. "I need to leave by 10:50... how many minutes is that?" "I have to get off at 14:51... how long do I have?" You don't need to calculate anymore. ondot timer starts from the time you want it to ring. See both "when it rings" and "time remaining" at a glance. ■ for people who ・Find "how many minutes?" math annoying ・Want to know when the timer rings, not just the countdown ・Don't want to clutter their alarm list ・Want to timebox small tasks by clock time ■ perfect for ・Napping on trains — enter arrival time directly ・"Back by 1:00 PM" lunch break timer ・"Leave the cafe by 3:00" deadline ・Keeping housework from dragging on ■ end time mode — set the exact time to ring "Ring at 14:51." That's it. ■ duration mode — start from minutes "20 minute timer" works too. Shows the exact time it will ring, so you always know when it ends. ■ presets Save your frequent settings. Add a title. One tap to start. ■ Apple Watch Check the countdown on your wrist. Works independently without iPhone. ■ Live Activity Real-time display on Lock Screen and Dynamic Island. Check the timer while using other apps. *Supported devices only Free. No ads. No account required.

About

Study Timer

Features
Read full description

A study timer that tracks and logs your study time to help you stay motivated to keep going. ■ Track study sessions with a timer • Simple start, pause, and log controls • Review your study log by subject with charts and breakdowns ■ Built to keep you going • See your current study streak (consecutive days) • Set your own rewards — "after 7 days" or "after 10 hours," your choice ■ Support for focus • A focus mode that silences notifications while you study ■ Manage your records • Export and import your study log as a file for backup • Duplicate entries are merged automatically ■ Premium plan (monthly) • AI help with app usage and supported actions • Up to 30 successful external AI responses per app and subscription each day; resets at midnight Japan Standard Time • AI requires an internet connection and consent to send data • Ads removed Good for: students preparing for exams or certifications who want to log their daily study time and stay motivated to keep it up. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ondot timer|No4 screens
Study Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: ondot timer|No at none against Study Timer's 1. ondot timer|No also leads on ads (none vs shown) and update cadence (every 3 days vs fortnightly). Study Timer's advantage is iOS requirement (15.0 vs 17.0). On price and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Study Timer sells 1 in-app purchase, starting at $0.99 per month. ondot timer|No asks for nothing beyond the download.

UpkeepUpdate frequency

ondot timer|No ships an update every 3 days, Study Timer fortnightly. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 4 level
ondot timer|No versus Study Timer: the parameters behind the verdict, then further details
Parameterondot timer|NoStudy Timer
PriceFreeFree
Positive reviews83.3% of reviews—
Update frequencyEvery 3 days — betterFortnightly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size3 MB13 MB
Age rating4+4+
DeveloperMomoka ShiramizuMikoto Gateway

In-app purchases

None

ondot timer|No

No in-app purchases

1 purchases

Study Timer

Subscriptions1
  • プレミアムプラン$0.991 Month

Questions

Is ondot timer|No free?
ondot timer|No is free to download, with no in-app purchases.
Is Study Timer free?
Study Timer is free to download, with in-app purchases available.
Do ondot timer|No or Study Timer have ads?
Study Timer shows ads; ondot timer|No does not.
Which is updated more often, ondot timer|No or Study Timer?
ondot timer|No ships an update every 3 days, and Study Timer fortnightly. Most recently, ondot timer|No was updated on October 20, 2026 and Study Timer on October 21, 2026.

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