Comparison

Knot Guide HD 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

Knot Guide HD

Learn to tie over 100 different knots with clear, step-by-step instructions and photographs. This app categorizes knots for easy browsing and provides detailed descriptions for each one, making it a practical tool for various activities.

Highlights
  • 107 unique knots
  • Clear, colorful photographs
  • Browse by category or knot name
  • Detailed knot descriptions
  • Categorized knot library
Features
Read full description

#1 Knot App on iTunes!!! Now with 107 knots and continuous new additions! An App Store Essentials "Weekend Warriors DIY" PICK! "Wow your friends!" - APPLEIPHONEAPPS.com "...a highly recommended app with tons of utility value..." - IPHONEAPPREVIEWS.net "What's knot to love?" - "THIS OLD HOUSE" - The Hardware Isle "Knot Guide is like a patient teacher... showing you over and over how to tie it until you’ve committed it to memory." - APPCRAVER.com "One of the most practical apps for those not bound by four walls..." - SAN FRANCISCO EXAMINER Need to tie a knot? Knot Guide will teach you the ropes! Knot Guide NOW includes the following 107 knots, 95 of which are unique: Adjustable Bend, Adjustable Loop, Albright Knot, Alpine Butterfly on a Bight, Anchor Bend, Arbor Knot, Ashley Bend, Ashley's Stopper, Bachmann Hitch, Back Splice, Barrel Hitch, Blake's Hitch, Blood Knot, Bowline, Bowline on a Bight, Braid Knot, Buntline Hitch, Carrick Bend, Chain Sinnet (Daisy Chain), Cleat Hitch, Cleat Hitch With Round Turn, Clinch Knot, Clove Hitch, Clove Hitch on a Bight, Constrictor, Countryman's Knot, Cow Hitch, Diagonal Lashing, Double Figure Eight Loop, Double Fisherman's, Double Overhand Stopper, Double Sheet Bend, Double Surgeon's Loop, Eye Splice, Figure Eight Follow Through, Figure Eight Knot, Figure Eight Loop, Fisherman's Bend, Fisherman's Knot, Flemish Flake, Four-in-Hand Knot, Gasket Coil, Girth Hitch, Hammock Hitch, Highwayman's Hitch, Honda Knot, Hunter's Bend, Improved Clinch Knot, Johnson Hitch, Jug Sling, Klemheist Knot, Lariat, Lark's Head, Lumberman's Knot, Monkey Fist, Mooring Hitch, Munter Hitch, Nail Knot, Orvis Knot, Overhand Knot, Oysterman's Stopper, Palomar Knot, Perfection Loop, Pile, Hitch, Poacher's Knot, Pratt Knot, Prusik Knot, Rapala, Reef Knot, Rigger's Bend, Right Angle Knot, Rolling Hitch, Rosendahl Bend, Rosendahl Loop, Round Lashing, Running Bowline, Running Knot, Sailor's Gripping Hitch, Sailor's Whipping, San Diego Jam Knot, Shear Lashing, Sheepshank, Sheet Bend, Simple Simon Under, Sledge Knot, Slim Beauty, Slip, Square, Square Lashing, Stevedore, Surgeon's Knot, Tautline Hitch, Timber Hitch, Trucker's Hitch (1), Trucker's Hitch (2), True Lover's Knot, Tumble Hitch, Turk's Head 3L5B, Turle Knot, Two Half Hitches, Uni Knot, Water Bowline, Water Knot, West Country Whipping, Yosemite Bowline, Zeppelin Bend, Zeppelin Loop 19 CATEGORIES include: Bends, Binding Knots, Climbing Knots, Decorative Knots, Fishing Knots, Hitches (End), Hitches (Middle), Lashings, Loops (Fixed), Loops (Slip), Navy SEAL Knots, Necktie Knots, Rope Care, Sailing Knots, Scout Knots, Shortenings, Splices, Stopper Knots, Whippings FEATURES: * Clear, colorful photographs * Browse search by category or knot name * From the "Knot Categories" screen, select a knot category (description and photo included for each category) * Next, select a specific knot from your chosen category (description and photo included for each specific knot) * Swipe the images to move forward or backward through the visual steps. * Save your favorite knots for easy access * "Knot Lingo" screen covers basic terms for knot tying. Please also check out Knot Guide for the iPhone. People of all walks of life since ancient times have found knots both fascinating and essential. Knots are used in sailing, climbing, tree trimming, jewelry making, and everyday tasks such as hitching a load to your vehicle. Whether you are a novice or you have experience with tying knots, Knot Guide will assist you! NOTE: Knots that are also known as another name are now also listed by the other name (eg. Square Knot is also listed as Reef Knot).

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

Transformer Calculation Tool4 screens

Verdict

The call

The clearest difference is price: Transformer Calculation Tool at Free against Knot Guide HD's $4.99. Transformer Calculation Tool also leads on update cadence (every 4 weeks vs every 12 months) and device support (3 vs 1). Knot Guide HD's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 13.0). On ads 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

Transformer Calculation Tool is free to download; Knot Guide HD costs $4.99 up front. Transformer Calculation Tool sells 1 one-off in-app purchase. Knot Guide HD asks for nothing beyond the download.

UpkeepUpdate frequency

Knot Guide HD ships an update every 12 months, Transformer Calculation Tool every 4 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Knot Guide HD versus Transformer Calculation Tool: the parameters behind the verdict, then further details
ParameterKnot Guide HDTransformer Calculation Tool
Price$4.99Free — better
Rating4.1 (23 ratings) — better—
Positive reviews77.4% of reviews—
Number of ratings23 — better—
Update frequencyEvery 12 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS11.0 — better13.0
Further details — not scored
Size99 MB57 MB
Age rating4+4+
DeveloperWinkpass Creations, Inc.Shraddhaben Parmar

In-app purchases

None

Knot Guide HD

No in-app purchases

1 purchases

Transformer Calculation Tool

One-time1
  • Lifetime premium$9.99

Questions

Is Knot Guide HD free?
Knot Guide HD costs $4.99, with no in-app purchases.
Is Transformer Calculation Tool free?
Transformer Calculation Tool is free to download, with in-app purchases available.
Do Knot Guide HD or Transformer Calculation Tool have ads?
Neither Knot Guide HD nor Transformer Calculation Tool shows ads.
Which is updated more often, Knot Guide HD or Transformer Calculation Tool?
Knot Guide HD ships an update every 12 months, and Transformer Calculation Tool every 4 weeks. Most recently, Knot Guide HD was updated on November 1, 2026 and Transformer Calculation Tool on October 31, 2026.

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