Comparison

Ohms Law vs Multimeter Wizard

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

Head to head
About

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.

Highlights
  • Calculate Voltage
  • Calculate Current
  • Calculate Resistance
  • Calculate Power
  • Input two values to find others
Features
Read full description

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/

About

Multimeter Wizard

This app helps new multimeter users understand readings by automatically converting measurements to their basic units. It provides detailed conversion steps to aid learning and build confidence. Suggestions for improvement are welcome.

Highlights
  • Automatic unit conversion
  • Detailed conversion steps
  • Learning aid for multimeter use
  • Supports V, Ω, and A units
  • User suggestion feedback
Read full description

Are you new to using a multimeter? Do you sometimes get confused by the symbols on the display? Or are you just a little unsure sometimes with the reading? Never fear, the Multimeter Wizard is here! With our fun little app you just use your multimeter to take a reading, enter it into the app, select the same prefix (M, k, m or µ) as being displayed on your multimeter and the reading will be automatically converted to its basic unit (V, Ω or A). That's it! If you want to better understand how the conversion is done you can simply pull down the results drawer and the conversion steps will be shown in detail. This is a great way to help you learn how to do the steps for yourself and give you confidence when using your multimeter. Got an idea for how to make this app more useful? Get in touch any time with your suggestion: info@blackstarsoftware.co.uk

Screenshots

Ohms Law4 screens
Multimeter Wizard4 screens

Verdict

The call

The clearest difference is in-app purchases: Ohms Law at none against Multimeter Wizard's 1. Ohms Law also leads on rating (4.3 vs 4.0). On price, ratings volume, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Multimeter Wizard sells 1 one-off in-app purchase. Ohms Law asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ohms Law holds the better App Store score, 4.3 against 4.0. Both are backed by a comparable volume of ratings — 7 and 4 respectively.

UpkeepUpdate frequency

Ohms Law ships an update every 16 months, Multimeter Wizard every 10 months. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
Ohms Law versus Multimeter Wizard: the parameters behind the verdict, then further details
ParameterOhms LawMultimeter Wizard
PriceFreeFree
Rating4.3 (7 ratings) — better4.0 (4 ratings)
Positive reviews70.0% of reviews—
Number of ratings7 — better4
Update frequencyEvery 16 monthsEvery 10 months — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.012.0
Further details — not scored
Size12 MB17 MB
Age rating4+4+
DeveloperPro Certs Software LtdBlackstar Software Ltd

Customer experience

Ohms Law

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews10 reviews
Positive70.0%
Neutral0.0%
Negative30.0%

Multimeter Wizard

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

Ohms Law

No in-app purchases

1 purchases

Multimeter Wizard

One-time1
  • Remove Adverts$0.99

Questions

Is Ohms Law free?
Ohms Law is free to download, with no in-app purchases.
Is Multimeter Wizard free?
Multimeter Wizard is free to download, with in-app purchases available.
Which has better reviews, Ohms Law or Multimeter Wizard?
Ohms Law is rated higher. Ohms Law averages 4.3 out of 5 from 7 ratings, while Multimeter Wizard averages 4.0 from 4 ratings.
Do Ohms Law or Multimeter Wizard have ads?
Both Ohms Law and Multimeter Wizard show ads.
Which is updated more often, Ohms Law or Multimeter Wizard?
Ohms Law ships an update every 16 months, and Multimeter Wizard every 10 months. Most recently, Ohms Law was updated on October 14, 2026 and Multimeter Wizard on October 8, 2026.

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