Comparison

Timer vs Zenn OTP

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

Head to head
About

Timer

This advanced timer allows for precise time management across various activities. Set multiple special events with customizable triggers like sounds, messages, or screen flashing. It's ideal for games, workouts, cooking, meditation, and any task requiring accurate timing, even when the app is in the background.

Highlights
  • Multiple complex timers simultaneously
  • Scheduled event triggers (sounds, messages, photos)
  • Customizable display modes (textual, graphical)
  • Background operation with sound/message alerts
  • Looping timers
  • Delayed start and flexible stop time entry
  • Screen blocking and flashlight alerts
Features
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Build timers that guide you through every step. Hear the next stretching instruction, follow a cooking sequence, or alternate activity and rest—with spoken announcements, sounds and clear visual progress. Start with a ready-made preset, then adapt it to your routine. From a simple countdown to a workout with several stages, choose your cues and preview the sequence before you begin. Try the Stretching preset for an example with spoken guidance. HEAR WHAT COMES NEXT Create cues such as “Hold the stretch” or “Round 3 of 5.” Combine your own text with timer and event names, round numbers, elapsed or remaining time, and the current clock time. Choose a voice and delay speech to let an alarm sound first. Use the same text and variables in on-screen messages and notifications. SET THE PACE OF YOUR ROUTINE Build intervals for HIIT, Tabata, stretching, meditation or study breaks. You can also time turns in board games. • Choose a duration or a specific finish time, with an optional preparation delay. • Repeat for a set number of rounds or indefinitely. • Schedule cues at specific times of day, relative to the start or end, or at regular intervals. Use times or percentages—for example, a gong 30 seconds before the end or a tick every second. • Run an event every round, only the first or last, or a range such as rounds 3–5. End actions can run every round or only after the final one. SAVE IT ONCE, USE IT AGAIN Run several timers at once. Use events to control timers, display a timer or open a URL. Add, reorder and hide timers to keep the ones you need within reach. Save your setups as presets, organize them, and import or export them to reuse or share. SEE YOUR PROGRESS AT A GLANCE Display remaining time, elapsed time, the clock or graphical progress in two customizable areas. Switch to full screen for a larger view, in portrait or landscape. Keep track of the current round, dim the display for a less intrusive screen, and lock the controls while keeping the time visible. Choose whether to stop at the end or keep showing the time elapsed since finishing. MAKE IT YOUR OWN Choose bells, gongs and other alarms, or import and record your own sounds. Try Shepard tones: sequences that seem to rise or fall endlessly in pitch. Play a song from your music library, choose a random track from a playlist, or schedule music to stop. Prefer silent cues? Use on-screen messages, vibrations or a flashing screen. Customize colors and backgrounds, and search over 1,800 icons. On supported devices, you can also schedule photos or use the flashlight as a visual cue. In the background, scheduled notifications can display messages and play sounds. Snooze reminders directly from notifications, choose whether to show round and notification numbers, or tap to run your configured timer controls or open a URL. Spoken announcements and photos require Timer to stay open.

About

Zenn OTP

Features
Read full description

This application generates one-time passwords for devices and services which developed by Zenn.

Screenshots

Timer4 screens
Zenn OTP4 screens

Verdict

The call

The clearest difference is price: Zenn OTP at Free against Timer's $3.99. Zenn OTP also leads on update cadence (every 3 weeks vs every 7 months). Timer's advantage is iOS requirement (13 vs 15.1). On ads, in-app purchases 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

Zenn OTP is free to download; Timer costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Timer ships an update every 7 months, Zenn OTP every 3 weeks. The most recent releases landed on October 17, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 7 level
Timer versus Zenn OTP: the parameters behind the verdict, then further details
ParameterTimerZenn OTP
Price$3.99Free — better
Rating4.8 (222 ratings) — better—
Positive reviews80.2% of reviews—
Number of ratings222 — better—
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13 — better15.1
Further details — not scored
Size38 MB17 MB
Age rating4+4+
DeveloperFrancis BonninZENN BILISIM TEKNOLOJILERI SANAYI VE TICARET ANONIM SIRKETI

Bugs and requests

Timer

Reported bugs

3 issues
  • Timer randomly changing time during use
  • Alarm not sounding when app is in background
  • Screen dimming and locking issues

Requested features

4 requests
  • Multiple timers running concurrently
  • Ability to save and share custom timer presets
  • More vibration and sound alert options
  • Improved background mode and iOS 4 support

Zenn OTP

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Timer

No in-app purchases

None

Zenn OTP

No in-app purchases

Questions

Is Timer free?
Timer costs $3.99, with no in-app purchases.
Is Zenn OTP free?
Zenn OTP is free to download, with no in-app purchases.
Do Timer or Zenn OTP have ads?
Neither Timer nor Zenn OTP shows ads.
Which is updated more often, Timer or Zenn OTP?
Timer ships an update every 7 months, and Zenn OTP every 3 weeks. Most recently, Timer was updated on October 17, 2026 and Zenn OTP on September 28, 2026.

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