Comparison

Unit Converter vs Календарът БГ

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

Head to head
About

Unit Converter

This tool helps you quickly and accurately convert between various measurement units for length, temperature, data, and more. Its user-friendly interface makes complex conversions simple for engineers, students, and daily use.

Highlights
  • Converts length, temperature, and data transmission rates
  • Supports pressure, time, frequency, and energy units
  • Includes density, inductance, and magnetic induction
  • Handles mass, power, volume, and area
  • Calculates speed and temperature
  • User-friendly interface
Features
Read full description

Unit Converter converts any value into the unit you need – instantly. Over 850 units in 96 categories, from everyday measurements to science and engineering, in a clean, modern app for iPhone, iPad, iPhone Duo and Apple TV. Type a number and see the result right away – no searching online for a converter, no math on paper. Perfect in the kitchen, when traveling, shopping, at school, in college and at work. FAST AND SIMPLE • Results appear as soon as you enter a value • Swap units with one tap • Quick Conversions – your value in every unit of the category at once • Copy and share results • Search categories and units YOUR CONVERSIONS AT HAND • Favorites – your most-used unit pairs, one tap away • History – return to earlier conversions anytime 96 CATEGORIES Free: length, mass, volume, speed, time, pressure, energy, digital data, angle, frequency, density, voltage, capacitance, volume flow rate, sound level and acceleration. Premium adds 80 more, including temperature, area, power, force, torque, fuel consumption, electric current, resistance, electric charge, data transfer, illuminance, typography, radiation activity, molar mass, dynamic viscosity and many other scientific and engineering units. You can also open any Premium category once by watching a short ad. OPTIMIZED FOR IPHONE DUO • Folded – the full converter on the outer screen, just like on a regular iPhone • Unfolded – category list and converter side by side, just like on iPad • Works in portrait and landscape, and the layout adapts on its own as you fold or unfold • Hide the list with one tap to give the converter the whole screen ON EVERY DEVICE • iPad – category list and converter side by side • Apple TV – conversions on the big screen • Light, dark or automatic appearance • Keyboard haptics you can turn off • 33 languages UNIT CONVERTER PREMIUM • All 80 advanced categories • No ads • Works offline – convert anywhere, even on a plane • History and favorites synced across your devices via iCloud • Family Sharing – share Premium with up to five family members at no extra cost • Yearly subscription or one-time lifetime purchase – Premium unlocks automatically on all your devices Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.developerapp.pl/privacy-unitconverter.html

About

Календарът БГ

This app provides comprehensive daily information, including religious holidays, name days, lunar phases, and astrological events. It also offers sunrise/sunset times and official public holidays. Location services enhance accuracy, but a default setting is available.

Highlights
  • Orthodox Christian calendar
  • Name day calendar
  • Lunar calendar
  • Sunrise and sunset times
  • Astrological calendar
  • Official public holidays
Features
Read full description

Календарът БГ съчетава в себе си информация за всеки един ден от годината. В него ще откриете: - Църковен календар на Българската православна църква - Календар с имени дни - Ден на ... (чудили ли сте се какъв ден е днес, вече ще знаете ) - Лунен календар - Инфо (седмица, изгрев, залез, продължителност на деня) Приложението изисква локация за да показва правилно изгревите и залезите, но ако не искате да давате разрешение за локация ще ползва град София. - Астрологичен календар, който включва дните на ретрограден меркурий, луна без курс, астрологични знаци - Календар с официалните почивни дни

Screenshots

Unit Converter4 screens
Календарът БГ3 screens

Verdict

The call

The clearest difference is review sentiment: Unit Converter at 100% against Календарът БГ's 50%. Календарът БГ's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price 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. Unit Converter sells 2 in-app purchases, starting at $1.99 per year. Календарът БГ asks for nothing beyond the download.

UpkeepUpdate frequency

Unit Converter ships an update every 6 months, Календарът БГ every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Unit Converter versus Календарът БГ: the parameters behind the verdict, then further details
ParameterUnit ConverterКалендарът БГ
PriceFreeFree
Rating3.9 (10 ratings) — better—
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings10 — better—
Update frequencyEvery 6 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple TViPhone, iPad, iPod
Requires iOS18.011.0 — better
Further details — not scored
Size8 MB64 MB
Age rating9+4+
DeveloperZbigniew OsadaKaloyan Koravski

Customer experience

Unit Converter

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Календарът БГ

Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

2 purchases

Unit Converter

Subscriptions1
  • Annual Premium$1.991 Year
One-time1
  • Full Version$5.99
None

Календарът БГ

No in-app purchases

Questions

Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Is Календарът БГ free?
Календарът БГ is free to download, with no in-app purchases.
Do Unit Converter or Календарът БГ have ads?
Unit Converter shows ads; Календарът БГ does not.
Which is updated more often, Unit Converter or Календарът БГ?
Unit Converter ships an update every 6 months, and Календарът БГ every 3 months. Most recently, Unit Converter was updated on November 2, 2026 and Календарът БГ on November 3, 2026.

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