GD&T vs FSWizard
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
FSWizard
This app is a comprehensive calculator for CNC machinists, simplifying the calculation of speeds and feeds for milling, drilling, and turning operations. It automatically suggests optimal cutting conditions based on material choices and supports advanced features like chip thinning and HSM machining.
- Milling, drilling, and turning speeds and feeds
- Automatic cutting condition suggestions
- Chip thinning and HSM support
- Built-in drill and tap charts (imperial/metric)
- GD&T reference
- Triangle and fillet calculators
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CNC Milling and Turning Speed and Feed Calculator (Wizard) Absolutely the best CNC machinist speed and feed calculator around. Calculate cutting conditions simply by choosing your work and tool material. No need to know any numbers. FSWizard will automatically use recommended cutting speed and chip-load. Made by a machinist for machinists. Improve productivity and optimize cutter life. Supports Chip thinning and HSM machining. Suggests optimum cutting depth and balances cutting parameters. *Milling, drilling, and turning speeds and feeds for various materials. * Built-in Drill and Tap charts for both imperial and metric systems will not leave you looking for one in your toolbox. *Tap drill sizes for most common imperial and metric taps. *Tap drill sizes for BSP and NPT pipe threads. *GD&T Reference *Triangle Calculator will be a great help to anyone who needs to calculate oblique or a right angle triangle *Fillet Calculator will find tangent points to a circle and two lines *Milling Tools available: Solid End-mill, Indexed End-mill, and Face-mill, Solid and indexable drills *Drilling Tools: Jobber Drill, Hi-Performance Parabolic Drill, Spade Drill, Reamer *Turning Tools: Profiling and Grooving Charts: Drill chart, Imperial, Metric, Pipe Tap charts are also included in the free version. FSWizard works with both metric and imperial units. The free version has All major groups of materials.
Screenshots
Verdict
The clearest difference is update cadence: FSWizard at every 5 weeks against GD&T's every 11 months. On price, 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
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, FSWizard every 5 weeks. The most recent releases landed on October 26, 2026 and November 1, 2026 respectively.
| Parameter | GD&T | FSWizard |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (47 ratings) — better |
| Positive reviews | — | 83.9% of reviews |
| Number of ratings | — | 47 — better |
| Update frequency | Every 11 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 56 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Carl Zeiss AG | Eldar Gerfanov |
In-app purchases
GD&T
No in-app purchases
FSWizard
No in-app purchases









