Comparison

Calculation Pad vs Duodecuple Calc

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

Head to head

Calculation Pad

Calculator

Free

🔧 Utilities

★ 5.01 ratingsView app →

About

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.

Highlights

Calculation history
Reuse past calculations
Add taxes
Fingerprint/password/face protection
Free to use

Read full description

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.

About

Duodecuple Calc

Features

Read full description

Display 12 calculators and perform calculations with each one.

Screenshots

Calculation Pad4 screens

Duodecuple Calc1 screens

Verdict

The call

The clearest difference is in-app purchases: Duodecuple Calc at none against Calculation Pad's 5. Calculation Pad's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.8.3). On price, update cadence 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. Calculation Pad sells 5 one-off in-app purchases. Duodecuple Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Calculation Pad ships an update fortnightly, Duodecuple Calc every 2 weeks. The most recent releases landed on October 5, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 6 level

Calculation Pad versus Duodecuple Calc: the parameters behind the verdict, then further details
Parameter	Calculation Pad	Duodecuple Calc
Price	Free	Free
Rating	5.0 (1 ratings) — better	—
Number of ratings	1 — better	—
Update frequency	Fortnightly	Every 2 weeks — better
Ads	No — better	Yes
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	13.0 — better	15.8.3
Further details — not scored
Size	3 MB	36 MB
Age rating	4+	4+
Developer	Yukio Tajima	Hideaki Uchikoshi

In-app purchases

5 purchases

Calculation Pad

One-time5

Developer Support$0.99
Small tip$0.99
Medium tip$3.99

Show 2 more

Developer Support$6.99
Large tip$6.99

None

Duodecuple Calc

No in-app purchases

Questions

Is Calculation Pad free?

Calculation Pad is free to download, with in-app purchases available.

Is Duodecuple Calc free?

Duodecuple Calc is free to download, with no in-app purchases.

Do Calculation Pad or Duodecuple Calc have ads?

Duodecuple Calc shows ads; Calculation Pad does not.

Which is updated more often, Calculation Pad or Duodecuple Calc?

Calculation Pad ships an update fortnightly, and Duodecuple Calc every 2 weeks. Most recently, Calculation Pad was updated on October 5, 2026 and Duodecuple Calc on September 23, 2026.