Comparison

Transformer Calculator. vs Garage Guard

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

Garage Guard

Features
Read full description

Garage Guard allows end users to: * Conveniently and quickly connect smart devices * Remotely control home appliances from anywhere * Schedule devices to perform multiple functions * Group control of multiple devices at the same time * Easily share devices with friends or family * Control over Alexa and Google voice assistant * Enjoy Over-the-air upgrade of smart devices

Screenshots

Transformer Calculator.4 screens
Garage Guard4 screens

Verdict

The call

The clearest difference is in-app purchases: Garage Guard at none against Transformer Calculator.'s 1. Garage Guard also leads on ads (none vs shown) and update cadence (every 3 days vs every 4 months). On price 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. Garage Guard asks for nothing beyond the download.

UpkeepUpdate frequency

Transformer Calculator. ships an update every 4 months, Garage Guard every 3 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 5 level
Transformer Calculator. versus Garage Guard: the parameters behind the verdict, then further details
ParameterTransformer Calculator.Garage Guard
PriceFreeFree
Rating4.8 (49 ratings) — better—
Number of ratings49 — better—
Update frequencyEvery 4 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.613.0 — better
Further details — not scored
Size41 MB211 MB
Age rating4+4+
DeveloperV PUGAZHENTHIGuardian Shanghai Co., Ltd.

In-app purchases

1 purchases

Transformer Calculator.

One-time1
  • Go Pro$3.99
None

Garage Guard

No in-app purchases

Questions

Is Transformer Calculator. free?
Transformer Calculator. is free to download, with in-app purchases available.
Is Garage Guard free?
Garage Guard is free to download, with no in-app purchases.
Do Transformer Calculator. or Garage Guard have ads?
Transformer Calculator. shows ads; Garage Guard does not.
Which is updated more often, Transformer Calculator. or Garage Guard?
Transformer Calculator. ships an update every 4 months, and Garage Guard every 3 days. Most recently, Transformer Calculator. was updated on November 4, 2026 and Garage Guard on October 30, 2026.

Other comparisons