Comparison

GD&T vs Machining Advisor Pro

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

Head to head
About

GD&T

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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, …) -25 animations -Basic information -Form tolerance -Profile tolerance -Position tolerance -Orientation tolerance -Runout tolerance

About

Machining Advisor Pro

This app provides recommended running parameters for CNC machining, specifically for Helical Solutions and Harvey Tool products. It generates customized speeds and feeds based on your end mill, tool path, material, and machine setup, optimizing metal removal rates and shop productivity.

Highlights
  • CNC speeds and feeds calculator
  • Optimized for 30,000+ products
  • Supports 300+ material grades
  • Intuitive user interface
  • Customized setup options
  • Quick search functionality
Features
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Machining Advisor Pro quickly, seamlessly, and accurately provides recommended running parameters for CNC machining with your Helical Solutions and Harvey Tool products. Generate specialized speeds and feeds by pairing your end mill with your exact tool path, material, and machine setup. OPTIMIZED FOR 30,000+ PRODUCTS Increase metal removal rates and shop productivity with customized running parameters specifically designed for Helical Solutions and Harvey Tool products. 300+ MATERIAL GRADES Take into account the specific material grade and condition of your workpiece. INTUITIVE USER INTERFACE Save time by quickly determining your end mill’s optimal running parameters. CUSTOMIZED SETUP OPTIONS Enter your machine and setup details to generate personalized Speeds & Feeds. QUICK SEARCH FUNCTIONALITY Narrow down options quickly with a convenient Type Ahead feature and Auto-Tool selection.

Screenshots

GD&T4 screens
Machining Advisor Pro1 screens

Verdict

The call

The clearest difference is ads: GD&T at none against Machining Advisor Pro's shown. Machining Advisor Pro's advantage is update cadence (every 6 weeks vs every 11 months). On price, in-app purchases, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GD&T ships an update every 11 months, Machining Advisor Pro every 6 weeks. The most recent releases landed on October 26, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 8 level
GD&T versus Machining Advisor Pro: the parameters behind the verdict, then further details
ParameterGD&TMachining Advisor Pro
PriceFreeFree
Rating—4.0 (164 ratings) — better
Positive reviews—17.2% of reviews
Number of ratings—164 — better
Update frequencyEvery 11 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size56 MB61 MB
Age rating4+4+
DeveloperCarl Zeiss AGHARVEY TOOL COMPANY, LLC

Bugs and requests

GD&T

Not enough reviews yet to summarise bugs or requests.

Machining Advisor Pro

Reported bugs

12 issues
  • Unable to input info beyond tool and material
  • Tool path type not working
  • Machine spindle not working
  • Tool holder not working
  • Won't open right now
Show 7 more
  • Interface CONSTANTLY hides the submit button
  • Privacy policy doesn't open a browser
  • 500 error every time on sign in
  • Unable to actually read the terms and conditions
  • Privacy terms link was broken
  • App crashes after sign in
  • App locks up

Requested features

3 requests
  • Quick list for daily tools
  • Ability to adjust radial depth of cut
  • Allow finishing input without resetting

In-app purchases

None

GD&T

No in-app purchases

None

Machining Advisor Pro

No in-app purchases

Questions

Is GD&T free?
GD&T is free to download, with no in-app purchases.
Is Machining Advisor Pro free?
Machining Advisor Pro is free to download, with no in-app purchases.
Do GD&T or Machining Advisor Pro have ads?
Machining Advisor Pro shows ads; GD&T does not.
Which is updated more often, GD&T or Machining Advisor Pro?
GD&T ships an update every 11 months, and Machining Advisor Pro every 6 weeks. Most recently, GD&T was updated on October 26, 2026 and Machining Advisor Pro on November 2, 2026.

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