Kalc vs WonderCalc
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.
WonderCalc
This utility app handles all your basic calculation needs, including unit conversions for length, weight, and temperature. It also offers advanced financial calculations for loans, such as monthly payments, total cost, and interest paid.
- Basic calculations
- Cut, copy, and paste functionality
- Unit conversions (length, weight, temperature)
- Loan payment calculations
- Total loan cost and interest calculation
Read full descriptionHide full description
WonderCalc performs all basic calculations, and allows you to cut, copy, and paste values to and from other apps. It can convert between units of length, weight, and temperature. It allows you to calculate monthly payments, as well as total cost and interest paid on the life of a loan.
Screenshots
Verdict
The clearest difference is iOS requirement: Kalc at 13.4 against WonderCalc's 16.0. On price, rating, review sentiment and ratings volume 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.
On the App Store both sit at effectively the same score — 4.7 for Kalc against 4.7 for WonderCalc. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews are what separate them: 96% of Kalc's written reviews are positive against 100% of WonderCalc's.
Kalc ships an update every 9 days, WonderCalc every 5 days. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.
| Parameter | Kalc | WonderCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) | 4.7 (3 ratings) |
| Positive reviews | 96.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 | 3 |
| Update frequency | Every 9 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.4 — better | 16.0 |
| Further details — not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | YUTA OKAJIMA | SharkMonkey Apps |
Customer experience
Kalc
WonderCalc
In-app purchases
Kalc
No in-app purchases
WonderCalc
No in-app purchases
