Comparison

Drill Speed vs Corner Calculus

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

Head to head
About

Drill Speed

Easily calculate optimal drill speeds for various drill bits and materials with an intuitive icon-based interface. This app automatically adjusts options based on your selections and remembers your progress.

Highlights
  • Intuitive icon-based interface
  • Wide selection of drill bits and materials
  • Automatic option adjustment
  • Detailed drill bit and material information
  • Saves selection progress
  • Apple Watch companion app
Features
Read full description

Quickly and easily find optimal drill speeds for your drill bits and materials. Drill Speed has a simple icon based interface that allows you to rapidly find and select your drill bits and materials; no need to laboriously search through tables. Features - Fast and intuitive interface - Wide selection of drill bits and materials - Materials and size ranges automatically adjust to accompany the selected bit / material - Details about your drill bits and materials - Remembers your selection when you close the app, allowing you to pickup where you left off - Apple Watch companion app for quick and easy reference Get Drill Speed and put away your drill speed charts for good.

About

Corner Calculus

This professional tool simplifies the calculation of corner miter joints for woodworking projects. It accurately determines edge angles and dimensions for various joint configurations, including corner rounding with a specified radius.

Highlights
  • Miter joint calculation
  • Edge angle and dimension calculation
  • Corner rounding with radius
  • Supports various joint configurations
  • Professional woodworking tool
Features
Read full description

Application for calculating corner miter joints (connection of parts with beveled butts). This professional tool is indispensable for joinery or carpentry work. The miter joint is extensively used in woodworking in making of boxes, doors, cabinets, etc. Calculating a butted joints is very complicated operation. But not for that application! Calculate exact edge angles and dimensions of parts for various joint configurations. You can set the angle between the sides, the slope of each side. In addition, obtain the dimensions of the intermediate segments for a perfect corner rounding, by specifying the rounding radius. Use this app to take your woodworking to the next level. Surprise yourself by creating complicated things with the amazing carpenter tool - Corner Calculus!

Screenshots

Drill Speed4 screens
Corner Calculus3 screens

Verdict

The call

The clearest difference is price: Drill Speed at Free against Corner Calculus's $1.99. Drill Speed also leads on rating (5.0 vs 4.3). Corner Calculus's advantage is update cadence (weekly vs every 6 months). On ratings volume, 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

Drill Speed is free to download; Corner Calculus costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Drill Speed holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

UpkeepUpdate frequency

Drill Speed ships an update every 6 months, Corner Calculus weekly. The most recent releases landed on September 28, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Drill Speed versus Corner Calculus: the parameters behind the verdict, then further details
ParameterDrill SpeedCorner Calculus
PriceFree — better$1.99
Rating5.0 (2 ratings) — better4.3 (3 ratings)
Positive reviews100.0% of reviews—
Number of ratings23 — better
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.212.0 — better
Further details — not scored
Size41 MB12 MB
Age rating4+4+
DeveloperMichael BykovSergey Kirichenko

Customer experience

Drill Speed

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Corner Calculus

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Drill Speed

No in-app purchases

None

Corner Calculus

No in-app purchases

Questions

Is Drill Speed free?
Drill Speed is free to download, with no in-app purchases.
Is Corner Calculus free?
Corner Calculus costs $1.99, with no in-app purchases.
Which has better reviews, Drill Speed or Corner Calculus?
Drill Speed is rated higher. Drill Speed averages 5.0 out of 5 from 2 ratings, while Corner Calculus averages 4.3 from 3 ratings.
Do Drill Speed or Corner Calculus have ads?
Neither Drill Speed nor Corner Calculus shows ads.
Which is updated more often, Drill Speed or Corner Calculus?
Drill Speed ships an update every 6 months, and Corner Calculus weekly. Most recently, Drill Speed was updated on September 28, 2026 and Corner Calculus on October 10, 2026.

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