Comparison

Transformer Calculator. vs Transformer Calc 2

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

Head to head
About

Transformer Calculator.

This app simplifies transformer calculations for engineers and students. It accurately computes primary and secondary currents, turns ratios, and secondary voltages based on user inputs for transformer ratings and winding turns.

Highlights
  • Primary and secondary current calculations
  • Turns ratio determination
  • Transformer type identification
  • Secondary voltage calculation
  • Supports 1Φ and 3Φ phases
  • User-friendly interface
Features
Read full description

Transformer Calculator: A user-friendly app for Current and Voltage Calculations. Current Calculations • Calculate primary and secondary full-load currents. • Determine the turns ratio and transformer type. How it works: 1. Select the phase type (1Φ or 3Φ). 2. Input transformer ratings (VA/kVA) and primary/secondary voltages. Outputs: • Primary full-load current • Secondary full-load current • Turns Ratio: N1 / N2 = V1 / V2 = I2/ I1 Voltage Calculations How it works: 1. Enter Number of turns in the primary and secondary windings 2. Input Primary voltage Outputs: • Secondary voltage • Turns Ratio: N1 / N2 = V1 / V2 = I2/ I1 Effortless and Accurate: Perfect for engineers and students to compute transformer parameters precisely.

About

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.

Highlights
  • 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
Features
Read 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.

Screenshots

Transformer Calculator.4 screens
Transformer Calc 24 screens

Verdict

The call

The clearest difference is price: Transformer Calculator. at Free against Transformer Calc 2's $3.99. Transformer Calculator. also leads on rating (4.8 vs 1.0) and ratings volume (49 vs 1). Transformer Calc 2's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

Transformer Calculator. is free to download; Transformer Calc 2 costs $3.99 up front. Transformer Calculator. sells 1 one-off in-app purchase. Transformer Calc 2 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Transformer Calculator. holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Transformer Calculator. has 49 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Transformer Calculator. ships an update every 4 months, Transformer Calc 2 every 2 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 2 level
Transformer Calculator. versus Transformer Calc 2: the parameters behind the verdict, then further details
ParameterTransformer Calculator.Transformer Calc 2
PriceFree — better$3.99
Rating4.8 (49 ratings) — better1.0 (1 ratings)
Positive reviews—0.0% of reviews
Number of ratings49 — better1
Update frequencyEvery 4 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better26.0
Further details — not scored
Size41 MB16 MB
Age rating4+4+
DeveloperV PUGAZHENTHISnappy Appz Inc.

Customer experience

Transformer Calculator.

All ratings48 ratings
Positive97.9%
Neutral0.0%
Negative2.1%

Transformer Calc 2

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Transformer Calculator.

One-time1
  • Go Pro$3.99
None

Transformer Calc 2

No in-app purchases

Questions

Is Transformer Calculator. free?
Transformer Calculator. is free to download, with in-app purchases available.
Is Transformer Calc 2 free?
Transformer Calc 2 costs $3.99, with no in-app purchases.
Which has better reviews, Transformer Calculator. or Transformer Calc 2?
Transformer Calculator. is rated higher. Transformer Calculator. averages 4.8 out of 5 from 49 ratings, while Transformer Calc 2 averages 1.0 from 1 ratings.
Do Transformer Calculator. or Transformer Calc 2 have ads?
Transformer Calculator. shows ads; Transformer Calc 2 does not.
Which is updated more often, Transformer Calculator. or Transformer Calc 2?
Transformer Calculator. ships an update every 4 months, and Transformer Calc 2 every 2 months. Most recently, Transformer Calculator. was updated on November 4, 2026 and Transformer Calc 2 on November 3, 2026.

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