Kalc vs Time Delay calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kalc
This utility app offers a unit converter, calculator, and world clock. Its user-friendly interface is designed for quick access to everyday calculations and conversions.
- Unit converter
- Calculator
- World clock
- Simple UI
- Quick results
Read full descriptionHide full description
Unit Converter, Calculator, and World Clock. The simple & clean UI to get the results you need for everyday use as quickly as possible.
Time Delay calculator
Read full descriptionHide 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
Verdict
The clearest difference is ads: Kalc at none against Time Delay calculator's shown. Kalc also leads on iOS requirement (13.4 vs 15.8.3). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Kalc ships an update every 9 days, Time Delay calculator fortnightly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Kalc | Time Delay calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) — better | — |
| Positive reviews | 96.2% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 9 days — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 24 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | YUTA OKAJIMA | Hideaki Uchikoshi |
In-app purchases
Kalc
No in-app purchases
Time Delay calculator
No in-app purchases
Questions
Is Kalc free?
Is Time Delay calculator free?
Do Kalc or Time Delay calculator have ads?
Which is updated more often, Kalc or Time Delay calculator?
Other comparisons
