GD&T vs Machining Advisor Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
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.
- CNC speeds and feeds calculator
- Optimized for 30,000+ products
- Supports 300+ material grades
- Intuitive user interface
- Customized setup options
- Quick search functionality
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | GD&T | Machining Advisor Pro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (164 ratings) — better |
| Positive reviews | — | 17.2% of reviews |
| Number of ratings | — | 164 — better |
| Update frequency | Every 11 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 56 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Carl Zeiss AG | HARVEY 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
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- 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
GD&T
No in-app purchases
Machining Advisor Pro
No in-app purchases
Questions
Is GD&T free?
Is Machining Advisor Pro free?
Do GD&T or Machining Advisor Pro have ads?
Which is updated more often, GD&T or Machining Advisor Pro?
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