Comparison

Transformer Calculator Plus 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 Plus

This utility app calculates key parameters for transformers, including voltage, current, and turns ratio. It helps determine if a transformer is step-up or step-down, essential for power conversion applications.

Highlights
  • Calculate primary and secondary voltage
  • Calculate primary and secondary current
  • Calculate transformer turns ratio
  • Determine step-up or step-down transformer
  • Supports AC voltage calculations
Features
Read full description

Transformer Calculator calculate any parameter within the transformer equation, including primary and secondary voltage, current, and turns. Transformer Calculations Include: Transformer Turns Ratio – Current and Turns Transformer Turns Ratio – Voltage and Turns Transformer Turns Ratio – Voltage and Current The result will indicate whether the transformer is step-up or step-down. Transformers are primarily used as power converters. The two types—step-up and step-down—operate on the same principle but in opposite directions. A step-up transformer converts a lower AC voltage to a higher voltage, while a step-down transformer reduces a higher AC voltage to a lower level. For example, if a country uses 110 V power, a step-up transformer converts it to 220 V, and a step-down transformer does the reverse. Both work with alternating current (AC). A transformer consists of a soft iron core with two coils wound around it, which are not electrically connected. These coils may be wound on separate limbs of the iron core or placed one over the other. The coil to which the alternating voltage is applied is called the primary coil or primary winding. When an alternating voltage is applied, the resulting alternating current in the primary winding generates a changing magnetic field. This changing field induces an alternating current in the secondary coil. The magnitude of the induced voltage depends on the number of turns in the secondary winding. All transformers have a nameplate rating. It is best to operate them within the voltage limits specified. Using a step-down transformer below its rated limit can support a wide range of applications, but exceeding the specified limit is dangerous and may cause electrical failure. The relationship between voltage, current, and the number of turns in each coil is given by: Vp/Vs = Np/Ns = Is/Ip Where: Vp – Primary voltage Vs – Secondary voltage Np – Primary turns Ns – Secondary turns Ip – Primary current Is – Secondary current Thank you for your support, and please visit nitrio.com for more apps for your iOS devices.

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 Plus4 screens
Calculation Transformers4 screens

Verdict

The call

The clearest difference is price: Calculation Transformers at Free against Transformer Calculator Plus's $2.99. Calculation Transformers also leads on update cadence (every 5 months vs every 45 months). Transformer Calculator Plus's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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; Transformer Calculator Plus costs $2.99 up front. Calculation Transformers sells 1 one-off in-app purchase. Transformer Calculator Plus asks for nothing beyond the download.

UpkeepUpdate frequency

Transformer Calculator Plus ships an update every 45 months, Calculation Transformers every 5 months. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
Transformer Calculator Plus versus Calculation Transformers: the parameters behind the verdict, then further details
ParameterTransformer Calculator PlusCalculation Transformers
Price$2.99Free — better
Rating3.3 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 45 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size1 MB56 MB
Age rating4+4+
DeveloperNitrioNanjibhai Gorasiya

In-app purchases

None

Transformer Calculator Plus

No in-app purchases

1 purchases

Calculation Transformers

One-time1
  • Lifetime premium$9.99

Questions

Is Transformer Calculator Plus free?
Transformer Calculator Plus costs $2.99, with no in-app purchases.
Is Calculation Transformers free?
Calculation Transformers is free to download, with in-app purchases available.
Do Transformer Calculator Plus or Calculation Transformers have ads?
Neither Transformer Calculator Plus nor Calculation Transformers shows ads.
Which is updated more often, Transformer Calculator Plus or Calculation Transformers?
Transformer Calculator Plus ships an update every 45 months, and Calculation Transformers every 5 months. Most recently, Transformer Calculator Plus was updated on September 10, 2026 and Calculation Transformers on September 17, 2026.

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