Calculation Pad vs Cathy's Calculator for iPad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculation Pad
This calculator app keeps a history of your calculations, allowing you to easily reuse past results. It offers enhanced security features like fingerprint or password protection for sensitive data. Despite its advanced functionality, it remains free to use.
- Calculation history
- Reuse past calculations
- Add taxes
- Fingerprint/password/face protection
- Free to use
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Calculation Pad is a calculator. Of course it can keep your history, and add taxes to your calculation easily, and use your history for a new calculation. Even if you are a spy running a top secret project, you can easily protect your calculation result with your fingerprint or password or your face. However functional this calculator this is, it can't beat the price of your daily necessities. After all, it's just a calculator.
Cathy's Calculator for iPad
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This is 100% free with no ads, no tracking, no permissions, and no logins. Made for people who remember the 80's, this features large buttons and is easy to use. Arithmetic is precise and where approximation is used (e.g. sqrt), the equals sign is replaced with a squigle-equals. There is a command history with scrollback, meant to feel like the old ribbon printers. You can copy a number to the clipboard by tapping on it. This calculator was made for my mother, Catherine.
Screenshots
Verdict
The clearest difference is in-app purchases: Cathy's Calculator for iPad at none against Calculation Pad's 5. Calculation Pad's advantage is update cadence (fortnightly vs every 38 months) and device support (3 vs 1). On price and ads 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. Calculation Pad sells 5 one-off in-app purchases. Cathy's Calculator for iPad asks for nothing beyond the download.
Calculation Pad ships an update fortnightly, Cathy's Calculator for iPad every 38 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.
| Parameter | Calculation Pad | Cathy's Calculator for iPad |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly — better | Every 38 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 13.0 — better | 15.4 |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Yukio Tajima | Sanjay Rao |
In-app purchases
Calculation Pad
- Developer Support$0.99
- Small tip$0.99
- Medium tip$3.99
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- Developer Support$6.99
- Large tip$6.99
Cathy's Calculator for iPad
No in-app purchases
Questions
Is Calculation Pad free?
Is Cathy's Calculator for iPad free?
Do Calculation Pad or Cathy's Calculator for iPad have ads?
Which is updated more often, Calculation Pad or Cathy's Calculator for iPad?
Other comparisons
