Comparison

Taper Formulas & Tools vs Calculate CNC

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

Head to head
About

Taper Formulas & Tools

This app provides essential machining calculators for taper turning, lathe operations, and angle measurements. It simplifies complex calculations for machinists, engineers, and students, ensuring precision in every task. Supports both metric and imperial units.

Highlights
  • Taper angle calculator
  • Diameter calculations
  • Length and ratio tools
  • Angle calculator
  • Metric/imperial support
  • Formula references
Features
Read full description

Taper Formulas & Tools provides a complete set of machining calculators to help you work faster, smarter, and with greater precision. Whether you're working with taper turning, lathe operations, tooling setups, or angle measurements, this app offers accurate formulas and easy-to-use tools for every machinist. Designed for workshops, mechanical engineers, CNC operators, and students, the app simplifies complex machining mathematics into clear, step-by-step calculations. Key Features: Taper angle calculator, Large end / small end diameter calculations, Length of taper and taper ratio tools, Included angle & half-angle calculator, Metric and imperial unit support, Clear formula references for learning and verification, Fast, accurate, workshop-ready interface, Whether you're machining shafts, tooling, mandrels, or precision taper parts, this app ensures accuracy in every calculation. in-app purchase included Lifetime to Remove Ads Privacy Policy : https://docs.google.com/document/d/1Dn1gNdDP2AHL7sg-px4rxdLAcoGHlNB8/edit#heading=h.1ionsc3v3xmq Terms and Condition : https://docs.google.com/document/d/1t-LREPKByKaM0UkbIo4o0E1gdAYs21Oe30EfGxenEss/edit?usp=sharing

About

Calculate CNC

Features
Read full description

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.

Screenshots

Taper Formulas & Tools4 screens
Calculate CNC4 screens

Verdict

The call

The clearest difference is update cadence: Calculate CNC at every 5 days against Taper Formulas & Tools's every 9 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Taper Formulas & Tools sells 1 one-off in-app purchase and Calculate CNC sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Taper Formulas & Tools ships an update every 9 months, Calculate CNC every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 8 level
Taper Formulas & Tools versus Calculate CNC: the parameters behind the verdict, then further details
ParameterTaper Formulas & ToolsCalculate CNC
PriceFreeFree
Rating4.5 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 9 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size33 MB6 MB
Age rating4+4+
DeveloperNanjibhai GorasiyaJEFFREY KYLE THOMPSON

In-app purchases

1 purchases

Taper Formulas & Tools

One-time1
  • Lifetime premium$9.99
1 purchases

Calculate CNC

Subscriptions1
  • Premium Monthly1 Month trial$1.991 Month

Questions

Is Taper Formulas & Tools free?
Taper Formulas & Tools is free to download, with in-app purchases available.
Is Calculate CNC free?
Calculate CNC is free to download, with in-app purchases available.
Do Taper Formulas & Tools or Calculate CNC have ads?
Neither Taper Formulas & Tools nor Calculate CNC shows ads.
Which is updated more often, Taper Formulas & Tools or Calculate CNC?
Taper Formulas & Tools ships an update every 9 months, and Calculate CNC every 5 days. Most recently, Taper Formulas & Tools was updated on October 24, 2026 and Calculate CNC on October 25, 2026.

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