Best Top Hand Transformer Lab Apps

250+ iOS apps curated and reviewed

4.5 avg rating
16 free apps
Updated August 2026

The best top hand transformer lab apps on iPhone average 4.5★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Top Hand Transformer Lab Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Top Hand Transformer LabTop Hand Transformer Lab$9.995.0★ (2)NoNoAug 2026
2Lineman's Reference - XFMR LABLineman's Reference - XFMR LAB$19.994.5★ (270)NoNoAug 2026
3Transformer Calculator ProTransformer Calculator ProFreeNoYesMay 2026
4Flyback Transformer DesignerFlyback Transformer DesignerFreeNoYesJun 2026
5Transformer Calculator.Transformer Calculator.Free4.8★ (47)YesYesAug 2026
6Calculation TransformersCalculation TransformersFreeNoYesJul 2026
7Transformer Calculation ToolTransformer Calculation ToolFreeNoYesJun 2026
8IEE BusinessIEE BusinessFreeNoNoAug 2026

Top Picks for Top Hand Transformer Lab

Top Hand Transformer Lab#1

Top Hand Transformer Lab by JAMES FRANCIS KENNEDY

Wire. Energize. Learn.
Editor's Choice
📚 Education
5.0(2 ratings)
$9.99
Top Hand Transformer Lab screenshot 1
Top Hand Transformer Lab screenshot 2
Top Hand Transformer Lab screenshot 3
Top Hand Transformer Lab screenshot 4
Top Hand Transformer Lab screenshot 5

This app allows users to build and test transformer bank connections virtually. Users can wire components, set voltages, and instantly see the results, learning through hands-on experimentation without real-world consequences.

Lineman's Reference - XFMR LAB#2

Lineman's Reference - XFMR LAB by Digital Apprentice LLC

Transformer Training Simulator
Strong Contender
📚 Education
4.5😐(270 ratings)
$19.99
#9in Education
Lineman's Reference - XFMR LAB screenshot 1
Lineman's Reference - XFMR LAB screenshot 2
Lineman's Reference - XFMR LAB screenshot 3
Lineman's Reference - XFMR LAB screenshot 4
Lineman's Reference - XFMR LAB screenshot 5
Lineman's Reference - XFMR LAB screenshot 6

This interactive simulator allows users to study and learn transformer connections. Test your wiring with various meters, and experience consequences of improper connections. Includes reference diagrams, informational material, and a quiz mode to test knowledge.

What We Love

  • 👍 Great for learning
  • 👍 Helpful for apprentices
  • 👍 Useful practice tool
  • 👍 Good concept

Room to Improve

  • 🐛 Too many bugs
  • 🐛 App is clunky
  • 🐛 Wiring issues

More Top Hand Transformer Lab apps to explore

4
Flyback Transformer Designer
Flyback Transformer Designer
Flyback Transformer Designer
Iterate·Custom Lib·Offline
Free
🔧 Utilities
(0)
5
Transformer Calculator.
Transformer Calculator.
Transformer Calculator.
primary / secondary
Free

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.

Primary and secondary current calculationsTurns ratio determinationTransformer type identification
🔧 Utilities
(47)
free with in-app purchases
6
Calculation Transformers
Calculation Transformers
Calculation Transformers
Transformer Math Tool
Free
🔧 Utilities
(0)
7
Transformer Calculation Tool
Transformer Calculation Tool
Transformer Calculation Tool
Voltage & Turns Ratio Calc
Free
🔧 Utilities
(0)
8
IEE Business
IEE Business
IEE Business
Electrical toolbox & reference
Free
🔧 Utilities
(0)
9
Audio Transformer Calculator
Audio Transformer Calculator
Audio Transformer Calculator
3 in 1 transformer calculator
$11.99

This app simplifies the calculation of power and audio transformers for DIY electronics projects, particularly tube amplifiers. It handles various transformer types and core configurations with user-friendly input of voltages, currents, or impedances. Enhanced features offer more capabilities than traditional spreadsheet calculators.

Calculate power transformersCalculate audio transformers (push-pull, single-ended)Supports tube amplifier builds
📚 Education
(5)
paid
10
Conduit Fill: NEC Calculator +
Conduit Fill: NEC Calculator +
Conduit Fill: NEC Calculator +
Wire, box fill & derating calc
Free
🔧 Utilities
(0)
11
PTI Transformer
PTI Transformer
PTI Transformer
by Push Interactions, Inc.
Free

This app calculates electrical transformer performance metrics like current, voltage, efficiency, and regulation. It also offers SI/Metric conversions for various physical quantities and includes a tool for estimating ship dates based on order time.

Transformer current, voltage, efficiency, and regulation calculationSI/Metric unit conversionsSpeed, force, power, area, pressure, volume, temperature, weights & measures conversions
📊 Productivity
(1)
free
12
ElectricianCalc NEC Calculator
ElectricianCalc NEC Calculator
ElectricianCalc NEC Calculator
NEC: Wire, Voltage, Conduit
Free
🔧 Utilities
(0)
13
Electronic Lab Free
Electronic Lab Free
Electronic Lab Free
by Luai Elamir
Free

This app provides electrical and computer engineering tools for professionals and hobbyists. It offers circuit design, simulation, component libraries, and measurement functionalities for on-the-go use.

Circuit design and simulationComponent libraries and datasheetsCalculators and unit conversion
📚 Education
(16)
free
14
Circuit Laboratory
Circuit Laboratory
Circuit Laboratory
by Fabrizio Boco
$5.99

Analyze electronic circuits with DC, AC, multifrequency AC, and transient analysis. Draw circuits graphically, modify component parameters, and view voltage and current graphs. Supports various components and offers video tutorials for each.

DC, AC, Multifrequency AC, and Transient AnalysisGraphical circuit drawingComponent parameter editing
📊 Productivity
(2)
paid
15
Vexten: Electrical Calculator
Vexten: Electrical Calculator
Vexten: Electrical Calculator
High-End Engineering Tool
Free
🔧 Utilities
(0)
16
Resistor Calculator & Ohms Law
Resistor Calculator & Ohms Law
Resistor Calculator & Ohms Law
Resistor Color Band Calculator
Free
🔧 Utilities
(0)
17
HVAC Mastery
HVAC Mastery
HVAC Mastery
Learn the HVAC Trade
Free

This app provides hands-on learning for HVAC professionals, covering fundamentals, core and advanced systems, and EPA 608 certification prep. It features interactive diagrams, simulators, real-world challenges, and quick reference tools for on-the-job use.

Structured learning tracksInteractive electrical and wiring simulatorsRefrigerant cycle simulator with fault injection
📚 Education
(1)
free
18
Cerrowire Calculators
Cerrowire Calculators
Cerrowire Calculators
by Cerro Wire LLC
Free

Calculate conduit fill and size based on NEC guidelines for copper and aluminum building wire. Determine the maximum number of conductors for a given raceway or the required raceway size for specific conductors.

NEC conduit fill calculationsConduit sizing for conductorsSupports copper and aluminum wire
🔧 Utilities
(5)
free
19
Electrical Calculator ElecCalc
Electrical Calculator ElecCalc
Electrical Calculator ElecCalc
Pro Electrical Calculator
Free
🔧 Utilities
(0)
20
Electrical Toolkit by HCP
Electrical Toolkit by HCP
Electrical Toolkit by HCP
Conduit + load calcs for pros
Free

This comprehensive mobile toolkit provides electricians and professionals with essential calculations, NEC-compliant tools, and field utilities. It offers features for conduit bending, fill calculations, load analysis, and various electrical calculators, all designed for speed and clarity.

Conduit bending calculationsNEC-compliant conduit fillResidential load calculations
🔧 Utilities
(68)
free

FAQ about Top Hand Transformer Lab

What are the best top hand transformer lab apps for iPhone?
Top Hand Transformer Lab tops our top hand transformer lab apps ranking as of August 2026, with a 5.0-star average from 2 App Store ratings, and it's priced at $9.99.
Yes — 16 of the top top hand transformer lab apps we rank are free to download, including Transformer Calculator Pro and Flyback Transformer Designer.
Top Hand Transformer Lab has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ top hand transformer lab apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Top Hand Transformer Lab is a virtual sandbox application that allows users to build and test transformer bank connections. It provides a consequence-free environment to learn by wiring components and observing immediate results.
It uses a learn-by-doing methodology. Users can wire transformer components, set primary voltages, and then 'energize' the bank to see the resulting secondary voltages. This instant feedback helps users understand the impact of their wiring choices.