Comparison

Interval Voice Clock vs Dozen Clock

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

Head to head
About

Interval Voice Clock

This app announces the current time at customizable intervals, allowing for hands-free time checks. It offers adjustable volume, voice options, and background playback, functioning entirely offline.

Highlights
  • Customizable announcement intervals
  • Adjustable announcement volume
  • Choice of male or female voice
  • Background playback support
  • Offline functionality
  • Multiple announcement types
Features
Read full description

Signal Time is a simple and easy-to-read app that announces the time at regular intervals. By default, it announces the time every 10 seconds (customizable). Use it in various situations—have it read the time aloud while you're busy getting ready in the morning, or check the time hands-free in the kitchen while waiting for your favorite show to start. No internet connection is required; the app works entirely offline. * Adjust the volume of both the second-hand sound and voice announcements (can be muted) * Set the announcement interval (from every 10 seconds to every hour) * Choose the type of voice used for announcements (female or male) * Supports background playback * Choose the type of announcements (Standard, Simple and Minimal)

About

Dozen Clock

Features
Read full description

Dozen Clock shows the time in a different way than other clocks and watches. In digital and analog format, too. It enables the user to have a tricky but still precise display of time enabling perhaps new ideas to root and grow. Released currently exclusively for Apple products, the application is able to display the date also in the format according to the Japanese calendar. INSTRUCTIONS: The biggest rectangle in the middle shows the minutes ( numbers outside the circle ). The small rectangle in the middle shows the hour ( darker numbers inside the circle ). The small red rectangle in the middle shows the seconds ( no numbers since it functions like in normal clocks ). "Think different." - Steve Jobs

Screenshots

Interval Voice Clock2 screens
Dozen Clock4 screens

Verdict

The call

The clearest difference is update cadence: Dozen Clock at every 2 days against Interval Voice Clock's every 2 weeks. On price, 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

Interval Voice Clock costs $1.99 and Dozen Clock $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Interval Voice Clock ships an update every 2 weeks, Dozen Clock every 2 days. The most recent releases landed on November 8, 2026 and October 27, 2026 respectively.

Scorecard1 real difference · 9 level
Interval Voice Clock versus Dozen Clock: the parameters behind the verdict, then further details
ParameterInterval Voice ClockDozen Clock
Price$1.99$1.99
Rating4.0 (2 ratings) — better—
Positive reviews62.5% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, MaciPhone, iPad, iPod, Mac, Apple Watch — better
Requires iOS15.015.0
Further details — not scored
Size32 MB2 MB
Age rating4+4+
DeveloperRyo OkamotoGergo Blasko

In-app purchases

None

Interval Voice Clock

No in-app purchases

None

Dozen Clock

No in-app purchases

Questions

Is Interval Voice Clock free?
Interval Voice Clock costs $1.99, with no in-app purchases.
Is Dozen Clock free?
Dozen Clock costs $1.99, with no in-app purchases.
Do Interval Voice Clock or Dozen Clock have ads?
Neither Interval Voice Clock nor Dozen Clock shows ads.
Which is updated more often, Interval Voice Clock or Dozen Clock?
Interval Voice Clock ships an update every 2 weeks, and Dozen Clock every 2 days. Most recently, Interval Voice Clock was updated on November 8, 2026 and Dozen Clock on October 27, 2026.

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