Ohmulator vs Wi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ohmulator
This electric circuit calculator simplifies Ohm's Law calculations. It allows users to input two known variables (current, resistance, voltage, or power) and automatically computes the unknown values. The app also supports on-the-fly unit adjustments, eliminating the need for manual conversions.
- Ohm's Law calculations
- Calculate unknown variables
- Adjustable unit types
- Total resistance calculator
- Supports Voltage, Current, Resistance, Power
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Makes Ohm's Law simple! Ohmulator is a simple, yet robust, electric circuit calculator that enables you to quickly find the unknown variables of a circuit. Ohmulator allows you to easily adjust unit types on the fly (eg. milli Amps, Amps, kilo Amps), which means no prior conversion! Enter two known variables (from: I = Current, R = Resistance, V = Voltage, P = Power), set preferred units, then Ohmulator will calculate and return the previously unknown values. Also an effective (total) resistance calculator. What two App Store reviewers had to say about Ohmulator: "Great. Does what it says. Very good app. Stylish design." 5 Stars - Jamie1990jamie "Awesome app. It simply works. A must have for the radioamateur or electronic nerd. Nice to have the watt law as well." 5 Stars - Per67 Also available for macOS on the Mac App Store.
Wi
This utility app connects to precision torque tools via Bluetooth 5.0. It allows remote configuration of wrench values, recording of cycle counts, and parameter adjustments. Users can generate data reports and perform digital calibration for quality analysis.
- Bluetooth 5.0 connectivity
- Remote wrench value configuration
- Cycle count recording
- Wrench parameter adjustment
- CSV data report generation
- Digital calibration support
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This mobile application when paired with precision torque tools using Bluetooth 5.0, provides users with advanced functionalities. Users can remotely configure wrench values for various torque operations, record cycle counts, adjust wrench parameters, and generate CSV-format data reports for quality analysis on a computer. Additionally, the app supports quick digital calibration of the wrench by certified training agents at any compatible maintenance calibration center, offering users comprehensive functionality and services.
Screenshots
Verdict
The clearest difference is price: Wi at Free against Ohmulator's $0.99. Wi also leads on rating (5.0 vs 4.7) and update cadence (every 2 weeks vs every 2 months). Ohmulator's advantage is ratings volume (79 vs 1) and iOS requirement (10.0 vs 17.0). On ads, in-app purchases, monetization model 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
Wi is free to download; Ohmulator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Wi holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Ohmulator has 79 ratings behind it against 1, so its average is the more settled of the two.
Ohmulator ships an update every 2 months, Wi every 2 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Ohmulator | Wi |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (79 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 81.1% of reviews | — |
| Number of ratings | 79 — better | 1 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Cheng Wei Lin |
Customer experience
Ohmulator
Wi
In-app purchases
Ohmulator
No in-app purchases
Wi
No in-app purchases
Questions
Is Ohmulator free?
Is Wi free?
Which has better reviews, Ohmulator or Wi?
Do Ohmulator or Wi have ads?
Which is updated more often, Ohmulator or Wi?
Other comparisons
