# Drill Calc vs Bricks Estimator

The clearest difference is update cadence: Drill Calc at every 18 months against Bricks Estimator's every 46 months. Drill Calc also leads on iOS requirement (12.0 vs 17.6). Bricks Estimator's advantage is price ($1.99 vs $2.99). On ads, in-app purchases and device support there is nothing between them.

Drill Calc costs $2.99 and Bricks Estimator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Drill Calc ships an update every 18 months, Bricks Estimator every 46 months. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Drill Calc | Bricks Estimator |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.1 (19 ratings)](https://appshunter.io/ios/app/drill-calc/id304434324/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 18 months** | Every 46 months |
| Monetization | Paid | — |
| Size | 5 MB | 1 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) | [H3 Apps, LLC](https://appshunter.io/developer/598620927) |

## 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


### Bricks Estimator

[App page](https://appshunter.io/ios/app/bricks-estimator/id1564680407)

**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 Bricks Estimator free?

Bricks Estimator costs $1.99, with no in-app purchases.

### Do Drill Calc or Bricks Estimator have ads?

Neither Drill Calc nor Bricks Estimator shows ads.

### Which is updated more often, Drill Calc or Bricks Estimator?

Drill Calc ships an update every 18 months, and Bricks Estimator every 46 months. Most recently, Drill Calc was updated on September 17, 2026 and Bricks Estimator on September 23, 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.*