Transformer Calc 2 vs Switch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Transformer Calc 2
This app provides electricians with instant transformer sizing and advanced construction math, compliant with both US (NEC 2023) and Canadian (CEC 2024) electrical codes. It simplifies complex calculations for wire, conduit, and overcurrent protection, and includes a fractional construction calculator.
- Dual code compliance (NEC 2023, CEC 2024)
- Instant transformer sizing
- Wire and conduit sizing
- Overcurrent protection calculation
- Fractional construction calculator
- Unit conversion
- Dark mode support
Read full descriptionHide full description
The essential tool for electricians. Now updated for 2024 CEC and 2023 NEC. Instant transformer sizing and advanced construction math in one app. Description Simplify your electrical calculations with Transformer Calculator 2. Designed for professional electricians, electrical engineers, and apprentices, Transformer Calculator 2 eliminates the guesswork from complex electrical math. Whether you are sizing a new install or verifying an existing setup, this app provides instant, code-compliant results for both US (NEC 2023) and Canadian (CEC 2024) standards. KEY FEATURES: DUAL CODE COMPLIANCE Toggle Instantly: Seamlessly switch between the 2024 CEC (Canada) and 2023 NEC (USA) with a single tap in settings. Localized Standards: The app automatically adjusts wire types, ampacities, and conduit fill rules based on your selected code. COMPREHENSIVE TRANSFORMER SIZING Input Flexibility: Simply enter your KVA, primary and secondary voltages, and configuration (Delta or Wye). Instant Results: Get immediate calculations for Full Load Amps (FLA), Overcurrent Protection (Fuse or Breaker), and Bonding. Wire and Conduit: Automatically sizes your Primary and Secondary wires (minimum size and ampacity) and Conduits (minimum pipe size and fill) based on the latest tables. ADVANCED CONSTRUCTION CALCULATOR Fractional Math: Built-in construction calculator that handles feet, inches, and fractions (1/16, 1/8, etc.) with ease. Unit Conversion: Quickly convert between metric and imperial or different unit scales. Volume and Area: Perform complex dimensional calculations right on the job site. PROFESSIONAL AND CUSTOMIZABLE Detailed References: Extensive database of wire types (THHN, THW, XHHW, etc.) and conduit types (EMT, ENT, Rigid PVC, etc.). Dark Mode: Fully supports system Dark Mode and tinted icons for comfortable viewing in low-light job sites. Custom Settings: Set your default wire types, temperature ratings (60, 75, or 90 degrees C), and precision preferences to match your daily workflow. Stop flipping through code books for every calculation. Download Transformer Calculator 2 today and carry the code in your pocket.
Switch
Control and program your Switch Panel Power Systems remotely via Bluetooth. Manage your SP8100, SP9100, and RCR-Force®12 systems directly from your connected device.
- Bluetooth connectivity
- Program switch panel systems
- Operate switch panel systems
- Compatible with SP8100, SP9100, RCR-Force®12
- Remote device control
Read full descriptionHide full description
This application interfaces with the Switch-Pros Switch Panel Power Systems. It allows users to both program, and operate, their switch panel system using a Bluetooth connected device. Compatible with the SP8100, SP9100 and RCR-Force®12 switch panel systems. Support for this app will be provided by Off Road Engineering LLC, with assistance from the app developer, when necessary.
Screenshots
Verdict
The clearest difference is review sentiment: Switch at 64% against Transformer Calc 2's 0%. Switch also leads on price (Free vs $3.99) and rating (3.9 vs 1.0). Transformer Calc 2's advantage is update cadence (every 2 months vs every 12 months). On ads, in-app purchases 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
Switch is free to download; Transformer Calc 2 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Switch holds the better App Store score, 3.9 against 1.0. That said, the two scores are not equally well evidenced: Switch has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Transformer Calc 2's written reviews are positive against 64% of Switch's.
Transformer Calc 2 ships an update every 2 months, Switch every 12 months. The most recent releases landed on June 1, 2026 and July 8, 2026 respectively.
| Parameter | Transformer Calc 2 | Switch |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) | 3.9 (22 ratings) — better |
| Positive reviews | 0.0% of reviews | 63.6% of reviews — better |
| Number of ratings | 1 | 22 — better |
| Update frequency | Every 2 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | Off Road Engineering LLC |
Customer experience
Transformer Calc 2
Switch
In-app purchases
Transformer Calc 2
No in-app purchases
Switch
No in-app purchases
Questions
Is Transformer Calc 2 free?
Is Switch free?
Which has better reviews, Transformer Calc 2 or Switch?
Do Transformer Calc 2 or Switch have ads?
Which is updated more often, Transformer Calc 2 or Switch?
Other comparisons
