Calculator + vs Ohms Law
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator +
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
- Free basic and scientific calculator
- Intuitive interface with equation and result display
- Fraction and percent support
- Advanced editing capabilities
- Polynomial and linear equation solver
- Graphing calculator
- Unit conversion and geometric calculators
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Award winning calculator app for iPad and iPhone. Designed with simplicity, usability and beauty in mind! FEATURES: - Free basic calculator - Free scientific calculator - Elegant & Intuitive interface - Advanced editing by easily going back and forth - Displays both the equation & the result at the same time - Supports Fraction & Percent - Supports many scientific functions If you are looking for more advanced features you can upgrade to one or more of the following: - Fraction Calculator with feet, inches & cm support! - Solving for x with a polynomial Calculator for solving quadratic & cubic equations 2x³ - 4x² - 22x + 24 = 0 - Linear Equations Solver for solving system of linear equations 2x – y = 9 3x + 4y = –14 - Graphing Calculator to find the local min, max & intersection points y = 2x³ – 4x (x² + y²)³ = -27y²x² - Triangle Calculator - Cone Calculator - Arc Calculator - Circle Calculator - Base Converter ( HEX OCT BIN DEC ) - Multiple themes Enjoy the FREE Scientific calculator on your iPhone & iPad. If you like it, support us by upgrading or giving us a positive review. Thanks :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ohms Law
This utility app calculates voltage, current, resistance, and power using Ohm's Law. Simply input any two values, and the app will compute the remaining two, providing a comprehensive tool for electrical calculations.
- Calculate Voltage
- Calculate Current
- Calculate Resistance
- Calculate Power
- Input two values to find others
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Ohms Law calculator for calculating power, current, resistance and voltage. Ohms Law Calculator Features: - Calculate Voltage (volts) - Calculate Current (amps) - Calculate Resistance (ohms) - Calculate Power (watts) Input any two values to calculate the other two. Ohms Law Formula: V = Voltage I = Current R = Resistance P = Power V / IxR (or P) An advanced Ohms Law calculator to calculate Voltage, Current, Resistance & Power. How to use: 1) Enter any two values to calculate the other two. 2) Tap calculate. A Voltage Calculator, Current, Resistance, Power calculator all in one app. Check out our collection of electrical apps for iPhone and iPad https://www.procertssoftware.com/apps/
Screenshots
Verdict
The clearest difference is in-app purchases: Ohms Law at none against Calculator +'s 12. Ohms Law also leads on iOS requirement (12.0 vs 16.4). Calculator +'s advantage is update cadence (every 5 days vs every 16 months) and ratings volume (10K vs 7). 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
Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month. Ohms Law asks for nothing beyond the download.
Calculator + holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 85% of Calculator +'s written reviews are positive against 70% of Ohms Law's.
Calculator + ships an update every 5 days, Ohms Law every 16 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.
| Parameter | Calculator + | Ohms Law |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (10K ratings) — better | 4.3 (7 ratings) |
| Positive reviews | 84.9% of reviews — better | 70.0% of reviews |
| Number of ratings | 10K — better | 7 |
| Update frequency | Every 5 days — better | Every 16 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | xNeat.com | Pro Certs Software Ltd |
Customer experience
Calculator +
Ohms Law
Bugs and requests
Calculator +
Reported bugs
5 issues- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes
Requested features
5 requests- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines
Ohms Law
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator +
- Scientific Calculator3 Days trial$4.991 Month
- Calculator7 Days trial$39.991 Year
- Linear Calculator$2.99
- Factoring Calculator$2.99
- Handwriting Calculator$2.99
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- Currency Converter$2.99
- Themes Pack$2.99
- Graphing Calculator$3.99
- Fraction Calculator$3.99
- Scientific Calculator$4.99
- Calculator Plus$4.99
- Calculator$16.99
Ohms Law
No in-app purchases
