Comparison

GD&T pro vs Learn NumPy

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

Head to head
About

GD&T pro

This app serves as a multimedia reference for learning and interpreting geometric dimensioning and tolerancing (GD&T) based on ISO 1101 standards. It provides clear definitions and practical examples of various form and position tolerances, aiding engineers and employees in understanding and applying these concepts.

Highlights
  • Learn GD&T according to ISO 1101
  • Multimedia reference book
  • Explains definitions with examples
  • Covers form and position tolerances
  • Includes 52 animations
  • Basic information and advanced tolerances
Read full description

Learn, interpret and inspect GD&T according to ISO 1101. This app describes a large range of definitions of geometric dimensioning and tolerancing and supports engineers and employees as a multimedia reference book. As part of operative education, this app shows relationships and makes it easier to understand the right handling of form and position tolerances in practice. This app explains the most important definitions of GD&T and its interpretation by examples (straightness, roundness, flatness, cylindricity, profile of a line, parallelism, squareness, angularity, position, concentricity, symmetry, circular runout, …) -52 animations -Basic information -Form tolerance -Profile tolerance -Position tolerance -Orientation tolerance -Runout tolerance

About

Learn NumPy

Features
Read full description

Dive into data science and numerical computing with Learn NumPy! This app is designed to help you understand and leverage NumPy, a foundational library for scientific computing in Python. Whether you’re a beginner or looking to enhance your data skills, this app covers all the essentials of NumPy, from arrays to complex data operations. Key Features: Comprehensive Tutorials: Learn NumPy fundamentals, including arrays, matrices, data manipulation, and more. Bookmark: Save important lessons for quick access anytime. Syntax Highlighting: Follow along with clear and readable syntax-highlighted code. Text-to-Speech: Listen to tutorials on the go with text-to-speech functionality. Save as PDF: Export tutorials and exercises as PDFs for offline study. Tips and Tricks: Discover useful shortcuts and best practices to optimize your data operations. Interview Questions: Prepare for data science interviews with curated NumPy-related questions. FAQs: Get answers to common questions and troubleshoot common NumPy challenges. Whether you’re analyzing data or building machine learning models, "Learn NumPy" provides everything you need to enhance your Python programming skills. Download now and start mastering data science essentials!

Screenshots

GD&T pro4 screens
Learn NumPy4 screens

Verdict

The call

The clearest difference is price: Learn NumPy at $1.99 against GD&T pro's $9.99. Learn NumPy also leads on iOS requirement (13.0 vs 15.0). On update cadence, ads, in-app purchases 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

GD&T pro costs $9.99 and Learn NumPy $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GD&T pro ships an update every 13 months, Learn NumPy every 21 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
GD&T pro versus Learn NumPy: the parameters behind the verdict, then further details
ParameterGD&T proLearn NumPy
Price$9.99$1.99 — better
Rating2.7 (3 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 13 months — betterEvery 21 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.013.0 — better
Further details — not scored
Size102 MB39 MB
Age rating4+4+
DeveloperCarl Zeiss AGMuhammad Mubeen

In-app purchases

None

GD&T pro

No in-app purchases

None

Learn NumPy

No in-app purchases

Questions

Is GD&T pro free?
GD&T pro costs $9.99, with no in-app purchases.
Is Learn NumPy free?
Learn NumPy costs $1.99, with no in-app purchases.
Do GD&T pro or Learn NumPy have ads?
Neither GD&T pro nor Learn NumPy shows ads.
Which is updated more often, GD&T pro or Learn NumPy?
GD&T pro ships an update every 13 months, and Learn NumPy every 21 months. Most recently, GD&T pro was updated on October 6, 2026 and Learn NumPy on October 9, 2026.

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