Comparison

でんたくん vs Time Delay calculator

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

Head to head

Time Delay calculator

Free

🔧 Utilities

No ratingsView app →

About

でんたくん

Features

Read full description

ただの電卓アプリですが、、背景のグラデをお好みのデザインにしてみよう！文字の配色とプッシュ音の設定もできます。

About

Time Delay calculator

Features

Read full description

A calculator that can display calculation results with a delay to practice mental arithmetic. >Mental arithmetic practice mode Tap the timer key to turn on mental math practice mode. Enter the formula as usual. *Tap the timer key again to turn off the mental arithmetic practice mode. Return to normal calculator mode.

Screenshots

でんたくん2 screens

Time Delay calculator2 screens

Verdict

The call

The clearest difference is ads: でんたくん at none against Time Delay calculator's shown. でんたくん also leads on iOS requirement (13.0 vs 15.8.3). Time Delay calculator's advantage is update cadence (fortnightly vs every 34 months). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

でんたくん ships an update every 34 months, Time Delay calculator fortnightly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 4 level

でんたくん versus Time Delay calculator: the parameters behind the verdict, then further details
Parameter	でんたくん	Time Delay calculator
Price	Free	Free
Positive reviews	100.0% of reviews	—
Update frequency	Every 34 months	Fortnightly — better
Ads	No — better	Yes
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	13.0 — better	15.8.3
Further details — not scored
Size	2 MB	36 MB
Age rating	4+	4+
Developer	yusuke_sharp9th	Hideaki Uchikoshi

In-app purchases

None

でんたくん

No in-app purchases

None

Time Delay calculator

No in-app purchases

Questions

Is でんたくん free?

でんたくん is free to download, with no in-app purchases.

Is Time Delay calculator free?

Time Delay calculator is free to download, with no in-app purchases.

Do でんたくん or Time Delay calculator have ads?

Time Delay calculator shows ads; でんたくん does not.

Which is updated more often, でんたくん or Time Delay calculator?

でんたくん ships an update every 34 months, and Time Delay calculator fortnightly. Most recently, でんたくん was updated on October 26, 2026 and Time Delay calculator on October 25, 2026.