Comparison

EV Master vs Transformer Calculation Tool

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

Head to head
About

EV Master

Features
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EV Master focuses on the diagnosis and health status detection of new energy vehicle battery packs, integrating fault diagnosis, data stream reading, temperature and voltage monitoring of battery packs, and supporting one click generation of health reports. ā— Fault diagnosis: We automatically scan the entire vehicle system of new energy vehicles and support one click clearing of fault codes. ā— Read data stream: Supports reading battery pack related data streams for users to view battery related information in real time ā— Battery pack inspection: Read the voltage and temperature of each battery in the new energy vehicle, and grasp the health status of each battery. Battery Health Report: It covers basic information about the battery (remaining charge, health status) and inspection details (fault conditions, battery voltage and temperature, data flow information), assisting users in understanding the battery condition of their car.

About

Transformer Calculation Tool

Features
Read full description

Easy Transformer Calculator is a practical and accurate tool designed for electricians, engineers, technicians, and students. Perform transformer calculations instantly with a clean and easy-to-use interface. Whether you're working with electrical systems, power distribution, or learning transformer theory, this app helps simplify complex calculations and improve accuracy. Key Features: • Transformer voltage and current calculations • Turns ratio and power estimation • Supports electrical engineering formulas • Fast, accurate, and easy-to-use interface • Ideal for students, electricians, and professionals • Useful for industrial and educational applications Save time, reduce calculation errors, and simplify transformer analysis with Easy Transformer Calculator. in-app purchase included Lifetime to Remove Ads Privacy Policy : https://docs.google.com/document/d/1A79qPsEUJu1rXjqsSUct_IBBAewiuBK5b8Dz-SPD0CY/edit?usp=sharing Terms & Condition : https://docs.google.com/document/d/1_yiolHxlRnOnEZk_sgPThQ0hggtlZAKCM6NvqDOE8Gs/edit?usp=sharing

Screenshots

EV Master4 screens
Transformer Calculation Tool4 screens

Verdict

The call

The clearest difference is in-app purchases: EV Master at none against Transformer Calculation Tool's 1. Transformer Calculation Tool's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Transformer Calculation Tool sells 1 one-off in-app purchase. EV Master asks for nothing beyond the download.

UpkeepUpdate frequency

EV Master ships an update every 5 weeks, Transformer Calculation Tool every 4 weeks. The most recent releases landed on October 1, 2026 and September 16, 2026 respectively.

Scorecard2 real differences Ā· 4 level
EV Master versus Transformer Calculation Tool: the parameters behind the verdict, then further details
ParameterEV MasterTransformer Calculation Tool
PriceFreeFree
Update frequencyEvery 5 weeksEvery 4 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.613.0 — better
Further details — not scored
Size66 MB57 MB
Age rating4+4+
DeveloperTopTekk Technology Co.,Ltd.Shraddhaben Parmar

In-app purchases

None

EV Master

No in-app purchases

1 purchases

Transformer Calculation Tool

One-time1
  • Lifetime premium$9.99

Questions

Is EV Master free?
EV Master is free to download, with no in-app purchases.
Is Transformer Calculation Tool free?
Transformer Calculation Tool is free to download, with in-app purchases available.
Do EV Master or Transformer Calculation Tool have ads?
Neither EV Master nor Transformer Calculation Tool shows ads.
Which is updated more often, EV Master or Transformer Calculation Tool?
EV Master ships an update every 5 weeks, and Transformer Calculation Tool every 4 weeks. Most recently, EV Master was updated on October 1, 2026 and Transformer Calculation Tool on September 16, 2026.

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