Comparison

Pipe Source vs Ultimate NDT Pocketbook

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

Head to head
About

Pipe Source

Access comprehensive steel pipe specifications and industry conversion calculators. Easily find pipe charts for various sizes and schedules, and quickly convert units like feet to tons and $/ft to $/ton. Connect with industry experts for immediate assistance.

Highlights
  • Imperial and metric pipe charts
  • Wall thickness and weight per foot data
  • Oil Country and Tubular product information
  • Industry conversion calculators
  • Contact industry experts
  • Branch locator
Features
Read full description

Pipe Source brought to you by Kelly Pipe is a convenient resource for common steel pipe specifications as well as useful industry conversion calculators! This application includes imperial and metric pipe charts displaying wall thickness and weight per foot for Pipe sizes 1/8” – 52” and Schedules 5- Double Extra Heavy. Similar information is also provided for commonly stocked Oil Country and Tubular products including API drift and Coupling OD for well casing and tubing. Multiple built-in industry related calculators make it easy to convert feet to tons and $/ft to $/ton. The Pipe Source enables users to readily contact industry experts at a nearby Kelly Pipe branch to get immediate answers to their questions. With over 100 years in the business, an expert knowledgeable staff, Kelly Pipe is the Ultimate Source for Carbon Steel Pipe and Oil Country Tubular Goods!

About

Ultimate NDT Pocketbook

This app provides nondestructive testing (NDT) technicians with a comprehensive toolkit for field inspections. It offers essential calculations, references, and guidance across various NDT methods, with core features accessible offline. A subscription is required for full access.

Highlights
  • Field calculators for exposure, barricade distance, and more
  • Inspection references for RT, UT, ET, and VT
  • Technician tools for quick calculations and code helpers
  • Offline functionality for core features
  • Multiple language support
  • Support for various NDT methods
Features
Read full description

NDT Pocketbook is a professional field reference and calculator toolkit designed for nondestructive testing (NDT) technicians and inspectors. Built for real-world inspection environments, this app provides fast access to essential calculations, inspection references, and technical guidance across multiple NDT methods through a subscription-based model. An active subscription is required to access all features. Most features work locally on your device, allowing technicians to use calculators and references even when internet access is limited in the field. ________________________________________ SUBSCRIPTION REQUIRED NDT Pocketbook requires an active subscription to access all features. • Monthly: $5.99 per month • Yearly: $49.99 per year Includes access to: • All field calculators • All inspection references • All technician tools • Offline functionality • Continuous updates A 7-day free trial is available with your first subscription. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. ________________________________________ FEATURES Field Calculators • Gamma exposure calculator • X-ray exposure calculator • Barricade distance calculator • Ultrasonic testing calculators • Temperature correction tools • Velocity correction tools • Carbon equivalent calculator • Bolt torque calculator • Additional field calculation tools Inspection References • Radiographic testing guidance • Ultrasonic testing references • Eddy current inspection references • Visual inspection guidance • Material property references • Welding inspection resources Technician Tools • Quick inspection calculations • Code reference helpers • Field inspection tools • Material and inspection references ________________________________________ BUILT FOR THE FIELD • Designed for technicians and inspectors • Fast and simple interface • Core calculators and references available offline after subscription activation • Multiple language support • Optimized for use during field inspections ________________________________________ SUPPORTED LANGUAGES NDT Pocketbook currently supports the following languages: • English • Spanish (Español) • French (Français) • Portuguese – Brazil (Português – Brasil) • Arabic (العربية) • Chinese – Simplified (中文) Language support includes the main application interface and core features. Some content may remain in English as translations continue to be improved. ________________________________________ NDT METHODS INCLUDED • Radiographic Testing (RT) • Ultrasonic Testing (UT / UTSW / UTPA) • Magnetic Particle Testing (MT) • Liquid Penetrant Testing (PT) • Visual Testing (VT) • Eddy Current Testing (ET) • Positive Material Identification (PMI) • Welding inspection tools (CWI resources) ________________________________________ WHO THIS APP IS FOR • NDT technicians • Welding inspectors • Radiographers • Ultrasonic technicians • Quality inspectors • Field engineers ________________________________________ IMPORTANT NOTICE This application is intended as a reference and calculation aid for trained professionals. Users should always follow applicable codes, standards, and procedures. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/kustomappprivacy

Screenshots

Pipe Source4 screens
Ultimate NDT Pocketbook4 screens

Verdict

The call

The clearest difference is rating: Ultimate NDT Pocketbook at 5.0 against Pipe Source's 4.0. Ultimate NDT Pocketbook also leads on update cadence (weekly vs every 4 months) and ratings volume (6 vs 1). Pipe Source's advantage is in-app purchases (none vs 2) and iOS requirement (7.1 vs 15.1). On price, 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

Both are free to download. Ultimate NDT Pocketbook sells 2 in-app purchases, starting at $5.99 per month. Pipe Source asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ultimate NDT Pocketbook holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Ultimate NDT Pocketbook has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Pipe Source ships an update every 4 months, Ultimate NDT Pocketbook weekly. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
Pipe Source versus Ultimate NDT Pocketbook: the parameters behind the verdict, then further details
ParameterPipe SourceUltimate NDT Pocketbook
PriceFreeFree
Rating4.0 (1 ratings)5.0 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings16 — better
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.1 — better15.1
Further details — not scored
Size12 MB52 MB
Age rating4+4+
DeveloperKelly Pipe Co. LLCjames rose

Customer experience

Pipe Source

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Ultimate NDT Pocketbook

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pipe Source

No in-app purchases

2 purchases

Ultimate NDT Pocketbook

Subscriptions2
  • NDT Pocketbook Premium (Monthly)7 Days trial$5.991 Month
  • NDT Pocketbook Premium (Yearly)7 Days trial$49.991 Year

Questions

Is Pipe Source free?
Pipe Source is free to download, with no in-app purchases.
Is Ultimate NDT Pocketbook free?
Ultimate NDT Pocketbook is free to download, with in-app purchases available.
Which has better reviews, Pipe Source or Ultimate NDT Pocketbook?
Ultimate NDT Pocketbook is rated higher. Pipe Source averages 4.0 out of 5 from 1 ratings, while Ultimate NDT Pocketbook averages 5.0 from 6 ratings.
Do Pipe Source or Ultimate NDT Pocketbook have ads?
Neither Pipe Source nor Ultimate NDT Pocketbook shows ads.
Which is updated more often, Pipe Source or Ultimate NDT Pocketbook?
Pipe Source ships an update every 4 months, and Ultimate NDT Pocketbook weekly. Most recently, Pipe Source was updated on October 2, 2026 and Ultimate NDT Pocketbook on October 7, 2026.

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