# Drill Speed vs Corner Calculus

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.

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.

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.

Drill Speed ships an update every 6 months, Corner Calculus weekly. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Drill Speed | Corner Calculus |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/drill-speed/id1478541012/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/corner-calculus/id1532990651/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | **Free** | Paid |
| Size | 41 MB | 12 MB |
| Requires iOS | 13.2 | **12.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Bykov](https://appshunter.io/developer/1660653209) | [Sergey Kirichenko](https://appshunter.io/developer/1532990653) |

## What reviewers say

### Drill Speed

[App page](https://appshunter.io/ios/app/drill-speed/id1478541012)

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:** macOS Compatibility

**In-app purchases:** none


### Corner Calculus

[App page](https://appshunter.io/ios/app/corner-calculus/id1532990651)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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 October 13, 2026 and Corner Calculus on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*