Comparison

Drill Calc vs MTX Softphone

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

MTX Softphone

Read full description

Experience high-quality, reliable, and feature-rich communication with the MTX.Cloud VoIP Softphone app. Designed to enhance your calling experience, this app is your all-in-one solution for making and receiving calls over the internet. Apart from the typical functionalities, we're thrilled to introduce our free VOIP application that allows excellent free app-to-app calls. Enjoy high-definition conversations, secure chats —all at no charge. Key Features: Crystal-Clear Audio: Enjoy superior voice quality with HD audio technology, ensuring your conversations are always clear and understandable. Intuitive Interface: Our user-friendly interface makes it effortless to navigate through the app's features, enabling you to manage calls, contacts, and settings with ease. Seamless Integration: Connect with popular VoIP service providers and effortlessly sync your contacts for hassle-free calling. Our app seamlessly integrates with leading platforms such as MTX.Cloud, enabling you to stay connected wherever you are. Advanced Call Management: Take full control of your calls with a wide range of features, including call transfer, call waiting, and call hold. Never miss an important call again. Multi-Device Support: Access your VoIP softphone from multiple devices, including smartphones, tablets, and desktop computers, ensuring you're always reachable, regardless of your location. Secure and Private: Rest assured that your conversations are protected with state-of-the-art encryption protocols, ensuring the privacy and confidentiality of your calls. Customization Options: Personalize your softphone app with various themes and settings, allowing you to tailor the app to your preferences and enhance your user experience. Discover a new level of communication efficiency with the MTX.Cloud VoIP Softphone app. Download now and unlock a world of seamless calling experiences for both your personal and professional needs.

Screenshots

Drill Calc4 screens
MTX Softphone4 screens

Verdict

The call

The clearest difference is price: MTX Softphone at Free against Drill Calc's $2.99. Drill Calc's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

MTX Softphone is free to download; Drill Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Drill Calc ships an update every 18 months, MTX Softphone every 12 months. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Drill Calc versus MTX Softphone: the parameters behind the verdict, then further details
ParameterDrill CalcMTX Softphone
Price$2.99Free — better
Rating4.1 (19 ratings) — better—
Positive reviews91.7% of reviews—
Number of ratings19 — better—
Update frequencyEvery 18 monthsEvery 12 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better16.0
Further details — not scored
Size5 MB97 MB
Age rating4+4+
DeveloperBlack Cat SystemsMTX CLOUD SERVICES LIMITED

In-app purchases

None

Drill Calc

No in-app purchases

None

MTX Softphone

No in-app purchases

Questions

Is Drill Calc free?
Drill Calc costs $2.99, with no in-app purchases.
Is MTX Softphone free?
MTX Softphone is free to download, with no in-app purchases.
Do Drill Calc or MTX Softphone have ads?
Neither Drill Calc nor MTX Softphone shows ads.
Which is updated more often, Drill Calc or MTX Softphone?
Drill Calc ships an update every 18 months, and MTX Softphone every 12 months. Most recently, Drill Calc was updated on October 31, 2026 and MTX Softphone on November 3, 2026.

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