# Drill Calc vs Home Improvement Calcs

The clearest difference is rating: Home Improvement Calcs at 4.8 against Drill Calc's 4.1. Home Improvement Calcs also leads on update cadence (every 3 months vs every 18 months) and chart position (#196 vs unranked). Drill Calc's advantage is price ($2.99 vs $4.99). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Drill Calc costs $2.99 and Home Improvement Calcs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Home Improvement Calcs holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Home Improvement Calcs has 104 ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 92% of Drill Calc's written reviews are positive against 88% of Home Improvement Calcs's, so the app with the better star average is not the one people write more warmly about.

Drill Calc ships an update every 18 months, Home Improvement Calcs every 3 months. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Drill Calc | Home Improvement Calcs |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | [4.1 (19 ratings)](https://appshunter.io/ios/app/drill-calc/id304434324/reviews) | **[4.8 (104 ratings)](https://appshunter.io/ios/app/home-improvement-calcs/id417445336/reviews)** |
| Number of ratings | 19 | **104** |
| Positive reviews | **91.7% of reviews** | 88.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Best chart rank | — | **#196** |
| Size | 5 MB | 16 MB |
| Requires iOS | 12.0 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Calculated Industries](https://appshunter.io/developer/370406449) |

## 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


### Home Improvement Calcs

[App page](https://appshunter.io/ios/app/home-improvement-calcs/id417445336)

**Currently charting:** #196 Top Paid · Utilities (US App Store)

This app provides over 250 DIY and home improvement calculations and unit conversions. Easily solve a variety of tasks, save and share your results, and quickly find the tool you need.

**Highlights:** 250+ DIY calculations, Unit conversions, Save and open calculations, Add to favorites, Email results, Search functionality, Decimal or fraction results

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

**In-app purchases:** none


## Frequently asked questions

### Is Drill Calc free?

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

### Is Home Improvement Calcs free?

Home Improvement Calcs costs $4.99, with no in-app purchases.

### Which has better reviews, Drill Calc or Home Improvement Calcs?

Home Improvement Calcs is rated higher. Drill Calc averages 4.1 out of 5 from 19 ratings, while Home Improvement Calcs averages 4.8 from 104 ratings.

### Do Drill Calc or Home Improvement Calcs have ads?

Neither Drill Calc nor Home Improvement Calcs shows ads.

### Which is updated more often, Drill Calc or Home Improvement Calcs?

Drill Calc ships an update every 18 months, and Home Improvement Calcs every 3 months. Most recently, Drill Calc was updated on October 31, 2026 and Home Improvement Calcs on October 29, 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.*