Comparison

Q Calculator vs Mailinblack

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

Head to head
About

Q Calculator

This app provides optimal parameters for cutting, bending, welding, or machining specific steel types. Input basic steel information to receive precise machine setup guidance for high-quality results. It functions offline, ensuring accessibility in any location.

Highlights
  • Steel parameter calculation
  • Cutting, bending, welding guidance
  • Machining optimization
  • Offline functionality
  • Multi-language support
  • High-quality work output
Features
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Q Calculator helps you to find all the optimal parameters for cutting, bending, welding or machining QUARD (abrasion resistant steel) and QUEND (high yield strength steel). By selecting the type of work you need to perform and entering basic information about our steels, you’ll get precise answers on how to set up your machine and to undertake your task easily. So you can deliver neat and high quality work in a jiffy. As it works offline, you have always the results, wherever you are in the workshop or on the field and whenever you want. Q Calculator is available in different languages.

About

Mailinblack

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Your passwords and email, together on mobile Your data deserves protection that is simple, comprehensive, and always within reach. That is why My Sikker and My Protect are now available in the Mailinblack mobile app: your password manager and protected email, wherever you are. My Sikker supports you every day and gives you peace of mind. Mailinblack makes strong passwords the standard for all your needs. Every password is securely protected yet instantly accessible through a simple, intuitive interface that never compromises your security. My Protect gives you control over your email directly from your phone: review quarantined emails, take action in seconds, and manage your approved or blocked senders wherever you are. With the Mailinblack mobile app, your passwords and email are always within reach, so you remain in control of your security wherever you are, at any time. To use the mobile app, you must have a Mailinblack professional licence. Don’t have a licence? Discover Mailinblack: https://www.mailinblack.com/demo/

Screenshots

Q Calculator4 screens
Mailinblack4 screens

Verdict

The call

The clearest difference is update cadence: Mailinblack at every 3 weeks against Q Calculator's every 14 months. Q Calculator's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Q Calculator ships an update every 14 months, Mailinblack every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 7 level
Q Calculator versus Mailinblack: the parameters behind the verdict, then further details
ParameterQ CalculatorMailinblack
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 14 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better18.0
Further details — not scored
Size30 MB99 MB
Age rating4+17+
DeveloperArtWhere s.a.Mailinblack

In-app purchases

None

Q Calculator

No in-app purchases

None

Mailinblack

No in-app purchases

Questions

Is Q Calculator free?
Q Calculator is free to download, with no in-app purchases.
Is Mailinblack free?
Mailinblack is free to download, with no in-app purchases.
Do Q Calculator or Mailinblack have ads?
Neither Q Calculator nor Mailinblack shows ads.
Which is updated more often, Q Calculator or Mailinblack?
Q Calculator ships an update every 14 months, and Mailinblack every 3 weeks. Most recently, Q Calculator was updated on November 2, 2026 and Mailinblack on November 3, 2026.

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