Comparison

Octuple Calc vs ProCalc

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

Head to head

Math, Percent, Converter

Free

🔧 Utilities

No ratingsView app →

About

Octuple Calc

Features

Read full description

Display eight calculators and perform calculations with each one.

About

ProCalc

Read full description

Stylish, Minimal, All-in-One Calculator and Utility Suite • Customize colors for digits, operators, brackets and functions. • Set precision, percentage logic. • Sleek modern light/dark UI. • Scientific and financial tools for everyday use. • Unlock premium themes for a personalized experience. • History and memory. Easily add to history manually or with each press of equal button Everyday Utilities: - Standard Calculator: Quick, reliable calculations - Date Calculator: Track duration and intervals - Unit Converter: Length, weight, temperature and more - Currency Converter: Real-time conversion for global currencies - Fuel Calculator: Manage fuel costs efficiently - Work Shift Calculator: Track hours, breaks, overtime and holiday pay Financial Tools: - Loan Calculator: Plan repayments - Mortgage Calculator: Manage home financing - Retirement Planner: Forecast your future savings - Savings Calculator: Track your growth - Much more... Health and Wellness: - BMI Calculator: Quick health metric insights History and Tracking: Save and review past calculations Premium Features: Unlock additional themes. Download now and simplify your life with a modern, customizable calculator and utility suite!

Screenshots

Octuple Calc1 screens

ProCalc4 screens

Verdict

The call

The clearest difference is in-app purchases: Octuple Calc at none against ProCalc's 4. Octuple Calc also leads on update cadence (every 2 weeks vs monthly). ProCalc's advantage is iOS requirement (13.0 vs 15.8.3). On price, ads 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. ProCalc sells 4 one-off in-app purchases. Octuple Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Octuple Calc ships an update every 2 weeks, ProCalc monthly. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 3 level

Octuple Calc versus ProCalc: the parameters behind the verdict, then further details
Parameter	Octuple Calc	ProCalc
Price	Free	Free
Update frequency	Every 2 weeks — better	Monthly
Ads	Yes	Yes
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.8.3	13.0 — better
Further details — not scored
Size	36 MB	34 MB
Age rating	4+	4+
Developer	Hideaki Uchikoshi	Penquinzoo Limited

In-app purchases

None

Octuple Calc

No in-app purchases

4 purchases

ProCalc

One-time4

Unlock Flat themes$3.99
Graphs and pdf export.$3.99
Unlock Neon themes$4.99

Show 1 more

All themes$4.99

Questions

Is Octuple Calc free?

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

Is ProCalc free?

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

Do Octuple Calc or ProCalc have ads?

Both Octuple Calc and ProCalc show ads.

Which is updated more often, Octuple Calc or ProCalc?

Octuple Calc ships an update every 2 weeks, and ProCalc monthly. Most recently, Octuple Calc was updated on October 28, 2026 and ProCalc on October 30, 2026.