Comparison

Flyback Transformer Designer vs Transformer Calculation Tool

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

Head to head
About

Flyback Transformer Designer

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Flyback Transformer Designer turns your flyback power supply spec into a complete transformer design β€” core, gap, turns, wire gauge, and loss breakdown β€” all computed locally on your device, no internet required. Built for power-electronics engineers who need more than a spreadsheet. Covers all four operating modes: DCM, BCM, QR, and CCM. Supports multi-output secondaries with independent winding design, not a simplified single-output approximation. Three steps to a finished design: 1. Enter your spec β€” Vin range, output voltages, power, frequency, and design constraints. 2. Review the top 5 core candidates β€” gap, Lm, winding layout, wire selection, copper/core losses, and temperature-rise estimates; switch the ranking between balanced, high-reliability, or lowest-loss. 3. Export a professional summary report (PDF or JSON). Why you'll like it: - Full core Γ— turns Γ— wire-gauge iteration with built-in AP pre-screening β€” no more flipping through datasheets by hand. - Optional B_max design ceiling β€” leave it blank and the engine guards against saturation automatically using the material's BsatΓ—70% margin, so an overly conservative guess won't rule out viable designs; set your own ceiling anytime for an extra constraint. - Built-in ferrite core library (EE, RM, PQ, ETD, etc.) plus My Database for your own materials, cores, and bobbins. - Parameter sweep β€” explore f_sw, load, and Vin sensitivity curves before you wind a single turn. - 100% local computation; your data never leaves your device. - Native support for iPhone, iPad, and Mac (Apple silicon); switch between Chinese and English. 3-day full-feature trial from first launch β€” you are not charged when it ends. After the trial, a one-time App Store purchase unlocks steps 2–3, My Database editing, and export. This is not a subscription and does not auto-renew. Existing annual subscriptions remain valid until they expire. Privacy Policy: https://tobebetter2026.github.io/Public-documents-Flyback-Transformer-Designer/privacy-policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ (Apple Standard EULA)

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: β€’ Transformer voltage and current calculations β€’ Turns ratio and power estimation β€’ Supports electrical engineering formulas β€’ Fast, accurate, and easy-to-use interface β€’ Ideal for students, electricians, and professionals β€’ 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

Flyback Transformer Designer4 screens
Transformer Calculation Tool4 screens

Verdict

The call

The clearest difference is update cadence: Transformer Calculation Tool at every 4 weeks against Flyback Transformer Designer's every 2 months. Transformer Calculation Tool also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

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

Both are free to download. Flyback Transformer Designer sells 1 in-app purchase, starting at $29.99 per year and Transformer Calculation Tool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Flyback Transformer Designer ships an update every 2 months, Transformer Calculation Tool every 4 weeks. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

Scorecard2 real differences Β· 4 level
Flyback Transformer Designer versus Transformer Calculation Tool: the parameters behind the verdict, then further details
ParameterFlyback Transformer DesignerTransformer Calculation Tool
PriceFreeFree
Update frequencyEvery 2 monthsEvery 4 weeks β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod, Mac β€” betteriPhone, iPad, iPod
Requires iOS15.013.0 β€” better
Further details β€” not scored
Size8 MB57 MB
Age rating4+4+
Developer建忠 徐Shraddhaben Parmar

In-app purchases

1 purchases

Flyback Transformer Designer

Subscriptions1
  • Annual subscription14 Days trial$29.991 Year
1 purchases

Transformer Calculation Tool

One-time1
  • Lifetime premium$9.99

Questions

Is Flyback Transformer Designer free?
Flyback Transformer Designer is free to download, with in-app purchases available.
Is Transformer Calculation Tool free?
Transformer Calculation Tool is free to download, with in-app purchases available.
Do Flyback Transformer Designer or Transformer Calculation Tool have ads?
Neither Flyback Transformer Designer nor Transformer Calculation Tool shows ads.
Which is updated more often, Flyback Transformer Designer or Transformer Calculation Tool?
Flyback Transformer Designer ships an update every 2 months, and Transformer Calculation Tool every 4 weeks. Most recently, Flyback Transformer Designer was updated on September 23, 2026 and Transformer Calculation Tool on September 16, 2026.

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