Drill Calc vs Shortwave Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drill Calc
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.
- 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
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Need to find the right drill bit size for a hole? Drill Calc calculates the correct drill bit size to use for threaded holes, based on the bolt (tap) diameter and thread pitch and percentage, for both inch and metric threads. Close and tight fit hole sizes for many popular drill sizes are also displayed. It also has tables of standard inch fractional and numeric drill bit sizes, as well as complete information for various pipe sizes. There is also detailed information about the commonly used sizes of wood screws. Buy your copy of Drill Calc today, and put away your drill chart.
Shortwave Guide
This application displays a real-time schedule of shortwave radio broadcasts worldwide, sourced from the EiBi database. Users can rescan for updates, view specific frequencies, and update the entire broadcast schedule database.
- Worldwide shortwave broadcast schedule
- Real-time station listings
- Frequency viewing
- Database updates
- EiBi database integration
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The app shows a schedule of shortwave radio broadcasting. Information taken from EiBi database. When you run the application, you will see a list of radio stations, broadcasting currently worldwide. To update the scanning time in the menu, click "Rescan". To view all the selected radio frequency specifically, use a right button. When you first launch the app, or to update the schedule database, choose "Update Database".
Screenshots
Verdict
The clearest difference is review sentiment: Drill Calc at 92% against Shortwave Guide's 20%. Drill Calc also leads on price ($2.99 vs $8.99) and iOS requirement (12.0 vs 15.6). Shortwave Guide's advantage is update cadence (every 2 months vs every 18 months). On ads, in-app purchases, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Drill Calc costs $2.99 and Shortwave Guide $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Drill Calc ships an update every 18 months, Shortwave Guide every 2 months. The most recent releases landed on October 4, 2026 and September 24, 2026 respectively.
| Parameter | Drill Calc | Shortwave Guide |
|---|---|---|
| Price | $2.99 — better | $8.99 |
| Rating | 4.1 (19 ratings) — better | — |
| Positive reviews | 91.7% of reviews — better | 20.0% of reviews |
| Number of ratings | 19 — better | — |
| Update frequency | Every 18 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 5 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Black Cat Systems | Vladyslav Haliuk |
Customer experience
Drill Calc
Shortwave Guide
In-app purchases
Drill Calc
No in-app purchases
Shortwave Guide
No in-app purchases
Questions
Is Drill Calc free?
Is Shortwave Guide free?
Do Drill Calc or Shortwave Guide have ads?
Which is updated more often, Drill Calc or Shortwave Guide?
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