# Drill Calc vs CB Radio Box

The clearest difference is review sentiment: Drill Calc at 92% against CB Radio Box's 9%. Drill Calc also leads on rating (4.1 vs 2.3) and ratings volume (19 vs 4). CB Radio Box's advantage is update cadence (every 2 months vs every 18 months) and iOS requirement (10.0 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

Drill Calc costs $2.99 and CB Radio Box $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Drill Calc holds the better App Store score, 4.1 against 2.3. Both are backed by a comparable volume of ratings — 19 and 4 respectively. Written reviews point the same way: 92% of Drill Calc's written reviews are positive against 9% of CB Radio Box's.

Drill Calc ships an update every 18 months, CB Radio Box every 2 months. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Drill Calc | CB Radio Box |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Rating | **[4.1 (19 ratings)](https://appshunter.io/ios/app/drill-calc/id304434324/reviews)** | [2.3 (4 ratings)](https://appshunter.io/ios/app/cb-radio-box/id512090426/reviews) |
| Number of ratings | **19** | 4 |
| Positive reviews | **91.7% of reviews** | 8.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 5 MB | 7 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Gennaro Coda](https://appshunter.io/developer/457314759) |

## 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


### CB Radio Box

[App page](https://appshunter.io/ios/app/cb-radio-box/id512090426)

Experience the nostalgia of 80s and 90s communication with this internet-based CB radio emulator. Connect with strangers anonymously using nicknames and country flags, or engage in private peer-to-peer chats with nearby friends via Bluetooth.

**Highlights:** Internet-based CB radio emulation, Anonymous communication with nicknames, Peer-to-peer Bluetooth communication, 20 Base Channels and 70 Private Channels, Country flags and user location display, Ignore user functionality, Supports cellular and Wi-Fi

**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 CB Radio Box free?

CB Radio Box costs $3.99, with no in-app purchases.

### Which has better reviews, Drill Calc or CB Radio Box?

Drill Calc is rated higher. Drill Calc averages 4.1 out of 5 from 19 ratings, while CB Radio Box averages 2.3 from 4 ratings.

### Do Drill Calc or CB Radio Box have ads?

Neither Drill Calc nor CB Radio Box shows ads.

### Which is updated more often, Drill Calc or CB Radio Box?

Drill Calc ships an update every 18 months, and CB Radio Box every 2 months. Most recently, Drill Calc was updated on October 31, 2026 and CB Radio Box on November 4, 2026.

---

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