Comparison

G Code Generator CNC OD ID vs i

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

Head to head
About

G Code Generator CNC OD ID

This utility app simplifies CNC G-code generation for various OD and ID machining tasks. Input numerical values to quickly create codes for angles, radii, chamfers, and more. Easily copy, email, or screenshot your generated G-codes.

Highlights
  • Generate G-codes for OD machining
  • Generate G-codes for ID machining
  • Input numerical values for calculations
  • Supports angle and radius conversions
  • Handles chamfer and step operations
  • Copy G-codes to clipboard
  • Email generated G-codes
Features
Read full description

A handy tool to generate CNC G codes with just a few number inputs. It works with different OD and ID machining scenarios: OD: - OD Angle into Radius, - OD Radius into Angle, - Angle to Angle Compensation, - OD Chamfer, - OD Radius, - OD into Radius to Step ID: - ID Angle into Radius, - ID Radius into Angle CW, - ID Radius into Angle CCW, - ID Chamfer - ID Radius into Shoulder, - ID Radius User can choose to copy and paste generated G codes to clipboard or email the G codes or save a screenshot by simply tapping a button.

About

i

This utility app assists machinists with CNC calculations, including cutting speed, RPM, and feed rate. It also provides databases for hole and shaft tolerances, as well as detailed thread specifications.

Highlights
  • Cutting speed calculation
  • RPM calculation
  • Feed rate calculation
  • Hole and shaft tolerance database
  • Thread data
  • Milling, drilling, and turning operations
Features
Read full description

iMachinist is a simple to use CNC calculator app that calculates for you the cuttings speed, RPM, feed rate and more for your milling, drilling and turning operations. iMachinist also includes a database for Hole and Shaft Tolerances and different Threads. Threads Data: - Outer Diameter (max/min) - Pitch Diameter (max/min) - Core Diameter (max/min) - Thread Height (max/min) Tolerance Data: - Zone (Shaft/Hole) - Grade (Shaft/Hole) - Diameter (Shaft/Hole) Cutting Calculator: - Tool Diameter - Cutting Speed - Spindle Speed - Number of Teeth - Feed per Tooth - Feed Rate

Screenshots

G Code Generator CNC OD ID4 screens
i4 screens

Verdict

The call

The clearest difference is price: i at Free against G Code Generator CNC OD ID's $3.99. G Code Generator CNC OD ID's advantage is rating (3.9 vs 2.6) and update cadence (every 3 weeks vs every 13 months). On ratings volume, ads, in-app purchases and monetization model 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

i is free to download; G Code Generator CNC OD ID costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

G Code Generator CNC OD ID holds the better App Store score, 3.9 against 2.6. Both are backed by a comparable volume of ratings — 19 and 9 respectively. Written reviews point the same way: 63% of G Code Generator CNC OD ID's written reviews are positive against 33% of i's.

UpkeepUpdate frequency

G Code Generator CNC OD ID ships an update every 3 weeks, i every 13 months. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
G Code Generator CNC OD ID versus i: the parameters behind the verdict, then further details
ParameterG Code Generator CNC OD IDi
Price$3.99Free — better
Rating3.9 (19 ratings) — better2.6 (9 ratings)
Positive reviews62.5% of reviews — better33.3% of reviews
Number of ratings19 — better9
Update frequencyEvery 3 weeks — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS9.0 — better16.0
Further details — not scored
Size19 MB8 MB
Age rating4+4+
DeveloperMotionics LLCilan TETRUASHVILI

Customer experience

G Code Generator CNC OD ID

All ratings19 ratings
Positive73.7%
Neutral0.0%
Negative26.3%
Written reviews24 reviews
Positive62.5%
Neutral0.0%
Negative37.5%

i

All ratings9 ratings
Positive33.3%
Neutral11.1%
Negative55.6%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

In-app purchases

None

G Code Generator CNC OD ID

No in-app purchases

None

i

No in-app purchases

Questions

Is G Code Generator CNC OD ID free?
G Code Generator CNC OD ID costs $3.99, with no in-app purchases.
Is i free?
i is free to download, with no in-app purchases.
Which has better reviews, G Code Generator CNC OD ID or i?
G Code Generator CNC OD ID is rated higher. G Code Generator CNC OD ID averages 3.9 out of 5 from 19 ratings, while i averages 2.6 from 9 ratings.
Do G Code Generator CNC OD ID or i have ads?
Neither G Code Generator CNC OD ID nor i shows ads.
Which is updated more often, G Code Generator CNC OD ID or i?
G Code Generator CNC OD ID ships an update every 3 weeks, and i every 13 months. Most recently, G Code Generator CNC OD ID was updated on October 24, 2026 and i on October 24, 2026.

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