Comparison

Calculate CNC vs Kalkulator CNC

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

Head to head
About

Calculate CNC

Features
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Calculate CNC is the machinist's shop-floor toolkit, and the only one that turns a part you sketch into real lathe G-code. THE PROGRAM PROTOTYPER Sketch a turned profile right on your phone. OD, ID, grooves, tapers, fillets, and Calculate CNC posts out Fanuc G-code you can take straight to the control. Lay in roughing and finishing passes, facing, grooving and drilling, preview the profile, and export the program. No CAM seat, no desktop, no $2,000 software. Just your phone on the bench. Then back it up with 40+ calculators and reference charts. Every formula and chart is checked against published standards (ASME, ISO, ANSI, Machinery's Handbook), so you can trust the number, then verify before you cut. Works fully offline. No account, no sign-up, no ads, no tracking. THREADING • UN thread 3-wire measurement and pitch-diameter limits (ASME B1.1, classes 1A/2A/3A) • Metric M-profile 3-wire measurement and limits (ISO 965, 4g6g/6g/6h) • Stub Acme external thread, class 2G (ASME B1.8) • Tap drill by percentage of thread, with nearest standard drill • Single-point threading infeed (29.5°/30° compound) LATHE • Taper: angle, taper per foot, tailstock offset • Cut time, knurl tracking, parts per bar • Insert decoder — type an ISO/ANSI designation (DNMG, CNMG, WNMG…) and see the insert drawn to scale • Boring-bar tool clearance visualizer MILLING & DRILLING • Speeds and feeds: RPM and feed from SFM and chip load • Bolt circle and bolt-line hole coordinates • Drill point depth, countersink and center-drill depth, countersink for flat-head screws CNC & GEOMETRY • Chip thinning (HSM), G02/G03 arc centers (I/J) • Triangle solver, fillet/radius, circle segment, polar ↔ rectangular • True position with MMC bonus, sine bar, spur gear, dovetail measurement SHOP MATH & CHARTS • Unit converter, surface speed, surface finish, material weight, box packing • Drill chart, inch and metric tap charts, NPT pipe taps • Socket head cap screws, center drills, flat-head screws • ISO fits & tolerances (ISO 286), G & M code reference, GD&T reference • Scientific calculator Many tools include a live diagram so you can see the setup, not just the number. SUBSCRIPTION Calculate CNC Premium — $4.99/month, auto-renewable. Unlocks the Program Prototyper and every calculator. The reference charts stay free, always. • Payment is charged to your Apple ID at confirmation of purchase. • The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. • Manage or cancel any time in your App Store account settings. • Privacy Policy: https://app.calculatecnc.me/privacy/ • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Calculate CNC is a reference aid and is not a substitute for engineering standards, gages, or your own judgment. Always confirm critical dimensions against the controlling standard or a calibrated gage before machining. Found a discrepancy? Email support@executable.lol Accuracy reports are welcome.

About

Kalkulator CNC

Features
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CNC Calculator – Your command center right at the machine. Developed by practitioners for CNC operators and engineers. Instantly calculate machining parameters, check thread dimensions, and select cutting values without the need for paper catalogs. Key Features: • Milling and Turning: Calculate cutting speed (Vc), spindle speed (n), feed (Fz, Vf), and machining time (Tc). • Thread Database: Quick access to dimensions for Metric (M, MF), Imperial (UNC, UNF), and Pipe (G) threads. Check pitch, TPI, and recommended tap drills. • Taper and Roughness Calculator: Calculate taper angles (alpha) and theoretical surface roughness (Ra). • Feed Compensation: Automatic correction for circular interpolation inside and outside the material. • Material Library: Select cutting parameters Vc, Fz, Kc for steel, aluminum, cast iron, and more. • Tool Magazine: Save your proven parameters for specific tools and materials. • Offline Mode: All calculations and databases are available without an internet connection, directly on the shop floor. Why choose this app? • Intuitive interface – results in just 3 taps. • Full support for Landscape orientation on tablets and machine mounts. • No unnecessary permissions – we care about your privacy. • Lightweight and fast performance. Download now and make your machining more precise and faster! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Calculate CNC4 screens
Kalkulator CNC4 screens

Verdict

The call

The clearest difference is in-app purchases: Kalkulator CNC at none against Calculate CNC's 1. Calculate CNC's advantage is ads (none vs shown) and update cadence (every 3 days vs weekly). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calculate CNC sells 1 in-app purchase, starting at $1.99 per month. Kalkulator CNC asks for nothing beyond the download.

UpkeepUpdate frequency

Calculate CNC ships an update every 3 days, Kalkulator CNC weekly. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

Scorecard4 real differences · 2 level
Calculate CNC versus Kalkulator CNC: the parameters behind the verdict, then further details
ParameterCalculate CNCKalkulator CNC
PriceFreeFree
Update frequencyEvery 3 days — betterWeekly
AdsNo — betterYes
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.2
Further details — not scored
Size6 MB56 MB
Age rating4+4+
DeveloperJEFFREY KYLE THOMPSONMICHAL SCHMUDE

In-app purchases

1 purchases

Calculate CNC

Subscriptions1
  • Premium Monthly1 Month trial$1.991 Month
None

Kalkulator CNC

No in-app purchases

Questions

Is Calculate CNC free?
Calculate CNC is free to download, with in-app purchases available.
Is Kalkulator CNC free?
Kalkulator CNC is free to download, with no in-app purchases.
Do Calculate CNC or Kalkulator CNC have ads?
Kalkulator CNC shows ads; Calculate CNC does not.
Which is updated more often, Calculate CNC or Kalkulator CNC?
Calculate CNC ships an update every 3 days, and Kalkulator CNC weekly. Most recently, Calculate CNC was updated on September 9, 2026 and Kalkulator CNC on September 13, 2026.

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