Just A Calc vs WonderCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Just A Calc
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This is Just A Calculator, nothing more, nothing less. The calculator will perform addition, subtraction, multiplication, division, percentage calculations, and find the square root. This will allow a maximum 38 digits to the left of the decimal and a maximum of 12 digits to the right of the decimal. This was developed primarily for the iPhone, however it will work on any iOS device.
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
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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 update cadence: WonderCalc at every 5 days against Just A Calc's every 38 months. Just A Calc's advantage is iOS requirement (12.0 vs 16.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Just A Calc ships an update every 38 months, WonderCalc every 5 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Just A Calc | WonderCalc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 38 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 10 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Tom Doherty | SharkMonkey Apps |
In-app purchases
Just A Calc
No in-app purchases
WonderCalc
No in-app purchases
Questions
Is Just A Calc free?
Is WonderCalc free?
Do Just A Calc or WonderCalc have ads?
Which is updated more often, Just A Calc or WonderCalc?
Other comparisons
