iNC vs Lathe Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iNC
Edit and simulate NC/G-code with 3D toolpath visualization. Inspect stock removal, view STEP/STL models, and access programming practice tools. Advanced features and AI require a subscription.
- NC/G-code editing with syntax highlighting
- 3D stock removal simulation
- STEP/STL model viewing and inspection
- Toolpath and code comparison
- File management and organization
- Machining calculators and references
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Edit NC/G-code, review 3D toolpaths, inspect stock removal and view STEP/STL models on iPhone and iPad. iNC-Mill brings programs, toolpaths and part geometry into one workspace for shop-floor review, programming practice and teaching. File management and basic 3D viewing are free. NC editing, simulation, knowledge references, calculators, advanced 3D tools and settings, and AI questions require an active subscription. NC/G-CODE EDITING • Import NC programs from Files, AirDrop or other apps • Edit with syntax highlighting, line navigation, search and replace • Renumber or remove N block numbers in selected lines or an entire file • Review very large programs in a dedicated read-only mode MILLING, TURNING AND MACROS • Watch stock material removal during 3-axis milling and turning playback • Inspect 3-axis and 5-axis toolpaths with distinct rapid, feed and arc motion • Trace FANUC macro execution flow and machine state • Work with Mitsubishi M800/M80 milling and turning programs, with matching command references, parameter forms and examples • Review macros, subprograms and canned cycles within the supported scope of the selected controller CODE BESIDE TOOLPATHS • Compare 3D toolpaths with read-only NC code in resizable Machining-mode panes • Follow associated source lines and available tool, feed, spindle and position readouts • Navigate by move, Z change, cutting section or tool section • Play forward or in reverse; adjust speed, path colors and viewing direction • Keep the camera and playback position when switching preview modes STEP/STL MODEL VIEWING • Open STP/STEP and STL files; rotate, zoom and use standard views • Explore STEP assembly trees, hide or isolate components, and adjust exploded views • Inspect internal geometry with interactive section planes • Measure supported STEP geometry: distances, radii, angles, areas and model dimensions • Measure between toolpath points and visible simulated workpiece surfaces Model viewing is read-only. STEP measurements use supported CAD geometry; STL and simulated workpiece measurements are mesh-based approximations. Toolpath curves use generated segments. Measurements do not certify physical part dimensions. FILES AND MACHINING TOOLS • Create, import, search and organize files; reopen recent files • Move files and folders in batches and restore Recently Deleted items • Review program tool checklists to verify executed tools, spindle speeds and feedrates • Manage machine and tool definitions; browse G/M-code references • Use milling, turning and quick calculators ON-DEVICE WORKFLOW Core NC editing, parsing, model viewing, toolpath review and simulation run on device. These tools do not require uploading your machining files. iNC-Mill supports program review and visualization. Professional verification, collision checks and machine, tooling and fixture checks remain necessary before machining. SUBSCRIPTIONS Monthly and yearly plans, prices and any available trial are shown in the App Store at purchase time. Payment is charged to your Apple ID after confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in Settings > Apple ID > Subscriptions. Terms of Use: https://inc-mill.com/en/terms Privacy Policy: https://inc-mill.com/en/privacy
Lathe Calculator
This tool streamlines CNC turning operations by quickly calculating essential parameters and generating programs. It simplifies complex tasks like thread and taper calculations, tolerance checks, and arc positioning, helping to reduce errors and improve efficiency for machinists and programmers.
- Thread calculation (metric, imperial, unified)
- Taper calculation
- Tolerance and fit analysis
- Arc tangency point calculation
- Macro programming assistant
- Save and reuse parameters
- Built-in program library
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Lathe Calculator is an efficiency tool designed specifically for CNC turning. Its core goal is to help you calculate parameters faster, generate programs quicker, and reduce errors. Key Features 1. Thread Calculation: Supports metric, imperial, and unified threads, with automatic output of key dimensions and reference G76 programs. 2. Taper Calculation: Covers common scenarios including large/small diameters, taper angles, and Morse tapers. 3. Tolerance & Fit: Quickly check hole/shaft tolerances and determine clearance or interference fits. 4. Arc Tangency Points: Assists with arc transitions and precise cutting point positioning. 5. Macro Programming Assistant: Includes common profiles and machining templates. 6. Additional Utilities: Chamfering, surface speed conversion, weight and material density calculations, and more. Efficiency Features 1. Save and reuse parameters with one tap to reduce repetitive input. 2. Built-in program library for storing and managing commonly used code. 3. Clear and structured results for quick on-site verification and adjustment. Suitable for machinists, CNC programmers, mechanical engineers, and learners in daily use.
Screenshots
Verdict
iNC and Lathe Calculator are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. iNC sells 2 in-app purchases, starting at $1.99 per month and Lathe Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for iNC against 5.0 for Lathe Calculator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
iNC ships an update every 6 days, Lathe Calculator every 5 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | iNC | Lathe Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 148 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | 乐勇 刘 | 惟 陈 |
Customer experience
iNC
Lathe Calculator
In-app purchases
iNC
- Subscribe Monthly7 Days trial$1.991 Month
- Subscribe Yearly7 Days trial$19.991 Year
Lathe Calculator
- Lifetime Unlock$24.99









