bcRPN vs Variable Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
bcRPN
This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.
- Reverse Polish Notation (RPN) input
- Complex number calculations
- Extended precision math
- Unlimited stack depth
- Undo functionality (up to 10 operations)
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This is a RPN (Reverse Polish Notation) Calculator. It supports complex numbers and uses extended precision math for all operations. The stack depth is unlimited. In case a mistake was made, up to 10 operations can be undone. RPN calculators work by entering the numbers on the stack first, then selecting the operation. For example to add 3 + 4, press: 3 Enter 4 +
Variable Calculator
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Variable Calculator lets you save frequently used formulas and calculate results quickly by changing the values of X, Y, and Z. Stop entering the same formula over and over again. Save a calculation once, then enter new values whenever you need to perform the calculation again. Variable Calculator is useful for discounts, margins, unit prices, taxes, workout weights, engineering formulas, and other repeated calculations. ■ Variable Calculator • Create formulas using X, Y, and Z variables • Save frequently used formulas and calculations • Recalculate instantly by entering new variable values • Use variables with both standard and scientific keypads • View long formulas and calculations clearly Example formulas: • Discounted price: X × (1 - Y ÷ 100) • Price including tax: X × 1.1 • Unit price: X ÷ Y • Target weight: X × Y • Custom formulas for work, study, or daily use ■ Standard Calculator • Fast and easy basic calculations • View the full expression and result • Calculation history • Copy expressions and results • Automatic text resizing for long numbers • Thousands separators • Scientific notation support ■ Scientific Calculator • Scientific calculator keypad • Configurable default angle unit • Use X, Y, and Z in scientific formulas ■ Convenient Features • Dark mode • Key vibration settings • Clean and intuitive interface • Quickly reuse saved formulas Make repeated calculations faster and easier. Save your own formulas, change the variable values, and get accurate results instantly. Privacy Policy: https://vars-calculator.aboutsvc.com/privacy Terms of Use: https://vars-calculator.aboutsvc.com/terms
Screenshots
Verdict
The clearest difference is in-app purchases: bcRPN at none against Variable Calculator's 1. bcRPN also leads on ads (none vs shown). On price, device support and iOS requirement 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. Variable Calculator sells 1 in-app purchase, starting at $1.99 per month. bcRPN asks for nothing beyond the download.
| Parameter | bcRPN | Variable Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 22 months | — |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 0 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Wilkins | About Service Inc. |
In-app purchases
bcRPN
No in-app purchases
Variable Calculator
- unlock_subscription$1.991 Month









