Comparison

WarikanJ vs Interval Voice Clock

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

Head to head
About

WarikanJ

Features
Read full description

"WarikanJ" is an abbreviation for "Warikan Jozu". In Japanese, "Warikan" means splitting the payment. "Jozu" means good, cleaver, or nice. "WarikanJ" answers a payment for each person about total amount. "Total amount” : Total payment "Num of people” : Number of members. “Carryover funds” : Amount of money brought from the previous payment. “min. change” : Split the bill with minimal change "¥10" : Round into ¥10 unit for pay "¥100" : Round into ¥100 unit for pay "¥1000" : Round into ¥1000 unit for pay “Equal split amount” is editable. After entering the amount, press the “apply” before calculation. When some people pay larger or smaller, you use "special payment”. You can set up to 9 special payment patterns. This update adds a new feature: sharing the result of “Warikan”.

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)

Screenshots

WarikanJ4 screens
Interval Voice Clock2 screens

Verdict

The call

The clearest difference is price: WarikanJ at Free against Interval Voice Clock's $1.99. Interval Voice Clock's advantage is update cadence (every 2 weeks vs every 2 months) and device support (4 vs 2). On ads and in-app purchases 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

WarikanJ is free to download; Interval Voice Clock costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WarikanJ ships an update every 2 months, Interval Voice Clock every 2 weeks. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
WarikanJ versus Interval Voice Clock: the parameters behind the verdict, then further details
ParameterWarikanJInterval Voice Clock
PriceFree — better$1.99
Rating—4.0 (2 ratings) — better
Positive reviews—62.5% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS18.515.0 — better
Further details — not scored
Size1 MB32 MB
Age rating4+4+
DeveloperHisako MurataRyo Okamoto

In-app purchases

None

WarikanJ

No in-app purchases

None

Interval Voice Clock

No in-app purchases

Questions

Is WarikanJ free?
WarikanJ is free to download, with no in-app purchases.
Is Interval Voice Clock free?
Interval Voice Clock costs $1.99, with no in-app purchases.
Do WarikanJ or Interval Voice Clock have ads?
Neither WarikanJ nor Interval Voice Clock shows ads.
Which is updated more often, WarikanJ or Interval Voice Clock?
WarikanJ ships an update every 2 months, and Interval Voice Clock every 2 weeks. Most recently, WarikanJ was updated on October 26, 2026 and Interval Voice Clock on October 30, 2026.

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