# Drill Calc vs Compound Miter Calculator

The clearest difference is review sentiment: Drill Calc at 92% against Compound Miter Calculator's 0%. Drill Calc also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.6). Compound Miter Calculator's advantage is price (Free vs $2.99) and update cadence (every 5 months vs every 18 months). On ads, monetization model and device support there is nothing between them.

Compound Miter Calculator is free to download; Drill Calc costs $2.99 up front. Compound Miter Calculator sells 1 one-off in-app purchase. Drill Calc asks for nothing beyond the download.

Drill Calc ships an update every 18 months, Compound Miter Calculator every 5 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Drill Calc | Compound Miter Calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.1 (19 ratings)](https://appshunter.io/ios/app/drill-calc/id304434324/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | **91.7% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 5 MB | 10 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) |

## What reviewers say

### Drill Calc

[App page](https://appshunter.io/ios/app/drill-calc/id304434324)

This utility app helps you determine the correct drill bit size for threaded holes. It supports both inch and metric threads, calculates close and tight fit hole sizes, and provides tables for standard drill bit sizes and pipe information.

**Highlights:** Calculates drill bit size for threaded holes, Supports inch and metric threads, Displays close and tight fit hole sizes, Includes standard inch fractional and numeric drill bit tables, Provides pipe size information, Offers data on common wood screw sizes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Compound Miter Calculator

[App page](https://appshunter.io/ios/app/compound-miter-calculator/id6762640506)

This app calculates precise compound angles for woodworking projects, providing diagrams and printable templates. It supports various units and runs offline for privacy.

**Highlights:** Compound angle calculations, Live, updating diagrams, Actual-size printable PDF templates, Inch and millimeter unit support, Offline and private operation, Exportable plain-text summaries

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access | $2.99 | one-time |


## Frequently asked questions

### Is Drill Calc free?

Drill Calc costs $2.99, with no in-app purchases.

### Is Compound Miter Calculator free?

Compound Miter Calculator is free to download, with in-app purchases available.

### Do Drill Calc or Compound Miter Calculator have ads?

Neither Drill Calc nor Compound Miter Calculator shows ads.

### Which is updated more often, Drill Calc or Compound Miter Calculator?

Drill Calc ships an update every 18 months, and Compound Miter Calculator every 5 months. Most recently, Drill Calc was updated on October 21, 2026 and Compound Miter Calculator on October 24, 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.*