Comparison

Coil Inductance 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

Coil Inductance Calculator

Quickly and accurately calculate the inductance of various coil types. This app provides practical results for electronics hobbyists, students, and engineers with a clean, easy-to-use interface and helpful diagrams.

Highlights
  • Fast inductance calculations
  • Simple input for coil parameters
  • Clear visual coil diagram
  • Calculation history
  • Reference information
  • Clean user interface
Features
Read full description

Calculate coil inductance quickly and accurately with Coil Inductance Calc. Designed for electronics hobbyists, RF builders, students, and engineers, this app helps you estimate inductance for common coil types with a clean, fast, and easy-to-use interface. Whether you are designing an air-core inductor, checking a solenoid, or comparing winding dimensions, Coil Inductance Calc gives you practical results without unnecessary complexity. Features • Fast inductance calculations for common coil types • Simple input for turns, diameter, length, and wire-related values • Clear visual coil diagram for easier understanding • Calculation history for reviewing previous results • Helpful reference information inside the app • Clean interface suitable for beginners and advanced users • Useful for RF projects, DIY electronics, education, and prototyping Who it’s for • Electronics hobbyists • Amateur radio operators • Students and teachers • Circuit designers • Makers and DIY builders Use Coil Inductance Calc to save time, reduce guesswork, and make coil design easier wherever you are. About Inductors An inductor—also known as a coil, choke, or reactor—is a passive electrical component that stores energy in a magnetic field when current flows through it. When the current changes, the magnetic field varies, inducing a voltage in the wire (Faraday’s Law of Induction). By Lenz’s Law, this induced voltage opposes changes in current, which is why inductors play a key role in circuits. Take the guesswork out of coil calculations with Coil Inductance Calculator—a simple, reliable tool for students, hobbyists, and professionals. Thanks for your support! Visit nitrio.com for more great apps for your iOS devices.

About

Calculation Transformers

This electrical engineering tool simplifies complex transformer calculations for students and professionals. It offers fast, accurate results in an easy-to-understand format, aiding in design, maintenance, and analysis.

Highlights
  • Fast transformer calculations
  • Clear input structure
  • Accurate results
  • Design and troubleshooting aid
  • User-friendly interface
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

Coil Inductance Calculator4 screens
Calculation Transformers4 screens

Verdict

The call

The clearest difference is price: Calculation Transformers at Free against Coil Inductance Calculator's $2.99. Calculation Transformers also leads on rating (5.0 vs 3.7) and update cadence (every 5 months vs every 31 months). Coil Inductance Calculator's advantage is in-app purchases (none vs 1) and ratings volume (7 vs 1). On ads 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

Calculation Transformers is free to download; Coil Inductance Calculator costs $2.99 up front. Calculation Transformers sells 1 one-off in-app purchase. Coil Inductance Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculation Transformers holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Coil Inductance Calculator has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Coil Inductance Calculator ships an update every 31 months, Calculation Transformers every 5 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 2 level
Coil Inductance Calculator versus Calculation Transformers: the parameters behind the verdict, then further details
ParameterCoil Inductance CalculatorCalculation Transformers
Price$2.99Free — better
Rating3.7 (7 ratings)5.0 (1 ratings) — better
Number of ratings7 — better1
Update frequencyEvery 31 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size2 MB56 MB
Age rating4+4+
DeveloperNitrioNanjibhai Gorasiya

In-app purchases

None

Coil Inductance Calculator

No in-app purchases

1 purchases

Calculation Transformers

One-time1
  • Lifetime premium$9.99

Questions

Is Coil Inductance Calculator free?
Coil Inductance Calculator costs $2.99, with no in-app purchases.
Is Calculation Transformers free?
Calculation Transformers is free to download, with in-app purchases available.
Which has better reviews, Coil Inductance Calculator or Calculation Transformers?
Calculation Transformers is rated higher. Coil Inductance Calculator averages 3.7 out of 5 from 7 ratings, while Calculation Transformers averages 5.0 from 1 ratings.
Do Coil Inductance Calculator or Calculation Transformers have ads?
Neither Coil Inductance Calculator nor Calculation Transformers shows ads.
Which is updated more often, Coil Inductance Calculator or Calculation Transformers?
Coil Inductance Calculator ships an update every 31 months, and Calculation Transformers every 5 months. Most recently, Coil Inductance Calculator was updated on November 2, 2026 and Calculation Transformers on October 31, 2026.

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