Comparison

Transformer Calculator. vs Calculation Transformers

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

Calculation Transformers

Features
Read full description

Calculation Transformers is a practical electrical engineering tool designed to help calculate important transformer parameters quickly and accurately. It is suitable for students, technicians, and professionals working with transformer design, maintenance, and analysis. The app simplifies complex electrical formulas and provides reliable outputs in an easy-to-understand format. With a clean interface and fast processing, it becomes a handy reference for daily engineering tasks. Key Features: Fast transformer-related calculations Clear and structured inputs Accurate and easy-to-read results Helpful for design and troubleshooting User-friendly interface Calculation Transformers supports efficient planning and understanding of transformer performance, making it a valuable companion for electrical work. in-app purchase included 
 Lifetime to unlock all calculation and remove ads Privacy Policy : https://docs.google.com/document/d/1Dn1gNdDP2AHL7sg-px4rxdLAcoGHlNB8/edit#heading=h.1ionsc3v3xmq Terms and Condition : https://docs.google.com/document/d/1t-LREPKByKaM0UkbIo4o0E1gdAYs21Oe30EfGxenEss/edit?usp=sharing

Screenshots

Transformer Calculator.4 screens
Calculation Transformers4 screens

Verdict

The call

The clearest difference is ads: Calculation Transformers at none against Transformer Calculator.'s shown. Calculation Transformers also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Transformer Calculator. sells 1 one-off in-app purchase and Calculation Transformers sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Transformer Calculator. ships an update every 4 months, Calculation Transformers every 5 months. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 7 level
Transformer Calculator. versus Calculation Transformers: the parameters behind the verdict, then further details
ParameterTransformer Calculator.Calculation Transformers
PriceFreeFree
Rating4.8 (48 ratings) — better—
Number of ratings48 — better—
Update frequencyEvery 4 months — betterEvery 5 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size41 MB56 MB
Age rating4+4+
DeveloperV PUGAZHENTHINanjibhai Gorasiya

In-app purchases

1 purchases

Transformer Calculator.

One-time1
  • Go Pro$3.99
1 purchases

Calculation Transformers

One-time1
  • Lifetime premium$9.99

Questions

Is Transformer Calculator. free?
Transformer Calculator. is free to download, with in-app purchases available.
Is Calculation Transformers free?
Calculation Transformers is free to download, with in-app purchases available.
Do Transformer Calculator. or Calculation Transformers have ads?
Transformer Calculator. shows ads; Calculation Transformers does not.
Which is updated more often, Transformer Calculator. or Calculation Transformers?
Transformer Calculator. ships an update every 4 months, and Calculation Transformers every 5 months. Most recently, Transformer Calculator. was updated on October 10, 2026 and Calculation Transformers on October 16, 2026.

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