Comparison

Unit Converter ++ vs Calendar Clock

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

Head to head
About

Unit Converter ++

Easily convert between various units of measurement for length, weight, temperature, volume, and more. This offline tool is designed for travelers, students, and professionals needing quick conversions.

Highlights
  • Converts length, weight, temperature, volume, and more
  • Supports numerous units of measurement
  • Works offline
  • Useful for travelers, students, and professionals
  • Covers speed, area, pressure, power, and energy units
Features
Read full description

Unit Converter ++ is an easy-to-use to converter length, weight, temperature, volume and multiple other units of measurement. Unit Converter ++ is useful for international travelers, students, cooks, engineers and anyone else who needs to convert between units. Units (abstract) Length: Mile, Yard, Foot, Inch, Kilometer, Meter, Centimeter... Temperature: Celsius, Fahrenheit... Volume: Gallon, Quart, Pint, Cup, Tablespoon, Teaspoon, Liter... Speed: Knots, Miles per Hour, Kilometers per Hour... Area: Square Mile, Square Foot, Acre... Weight: Ton, Pound, Ounce, Kilogram... Pressure: Pounds/Square Foot (psi), Bars, Inches of Mercury... Power: Horsepower, Kilowatts... Time: Years, Weeks, Days, Hours, Minutes... Energy: Calories, Ergs, Joules, Watt-Hours.. Fuel Consumption: Mile/Gallon (mpg), Liter/100 Kilometer.. Torque: Newton Meter, Pound-Force Foot... Force: Pound-Force, Dyne, Poundal... Unit Converter ++ works offline. Conversions are provided for informational purposes only, with no guarantee of accuracy or validity.

About

Calendar Clock

This app displays the current year, month, week, and time on a single screen with a clean design. It offers customizable theme colors and functions as a desk clock. The app disables device sleep mode while active.

Highlights
  • All-in-one screen display
  • Year, month, week, day, hour, minute, second
  • Switchable theme colors (dark, light, green, blue)
  • Disables device sleep mode
  • Acts as a desk clock
Features
Read full description

Time and date, beautifully together. Calendar Clock is a simple, elegant time-and-calendar app designed for iPhone and iPad. See the current time and the entire month at a glance, with a clean interface that stays out of your way. Features * Large digital clock — View the current system time clearly and instantly. * 24-hour or 12-hour format — Swipe across the clock to switch between 24-hour and AM/PM formats. * Monthly calendar — See the full month with the current year and month displayed above it. * Swipe through months — Swipe left or right on the calendar to move between months. * Today at a glance — Today's date is highlighted with a red circle. * Weekend highlighting — Saturdays and Sundays are displayed in red. * Multiple themes — Swipe up or down to change the screen theme. * Remembers your preferences — Your selected clock format and theme are preserved. * iPhone & iPad — Designed for both iPhone and iPad. Simple by design No complicated menus. No unnecessary controls. Just the time and the calendar, exactly when you need them. Calendar Clock — See time. See your day. Note that this application disables your device's sleep mode while running, so make sure you have enough battery life. *Important notice: Use the information recoded or functionality provided in / or generated with this application only as a rough indication, rough estimates or as a rough guide. Even though we do our best to provide you with confirmed information and tried-and-tested features, the accuracy and successful operation and performance of the application are NOT GUARANTEED by us. Users are strongly advised to confirm the information of their interest with other sources and not to ultimately rely on functionality and performance of this application. This application is provided “as is” and with all faults. You bear the risk of using it. We shall not be responsible or liable for any loss or damage of any kind incurred as a result of the use of functions or the content of this application. By using this application you are agreeing to these terms. If you do not agree to these terms do not use this application.

Screenshots

Unit Converter ++4 screens
Calendar Clock4 screens

Verdict

The call

The clearest difference is price: Unit Converter ++ at Free against Calendar Clock's $0.99. Unit Converter ++ also leads on update cadence (every 9 months vs every 41 months) and review sentiment (20% vs 0%). Calendar Clock's advantage is ads (none vs shown). On 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

Unit Converter ++ is free to download; Calendar Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Unit Converter ++ ships an update every 9 months, Calendar Clock every 41 months. The most recent releases landed on August 14, 2026 and September 10, 2026 respectively.

Scorecard6 real differences · 4 level
Unit Converter ++ versus Calendar Clock: the parameters behind the verdict, then further details
ParameterUnit Converter ++Calendar Clock
PriceFree — better$0.99
Rating1.6 (10 ratings) — better—
Positive reviews20.0% of reviews — better0.0% of reviews
Number of ratings10 — better—
Update frequencyEvery 9 months — betterEvery 41 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better26.5
Further details — not scored
Size6 MB4 MB
Age rating4+4+
DeveloperNirav PatelSystemiko Inc.

Customer experience

Unit Converter ++

All ratings10 ratings
Positive10.0%
Neutral0.0%
Negative90.0%
Written reviews10 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

Calendar Clock

Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Unit Converter ++

No in-app purchases

None

Calendar Clock

No in-app purchases

Questions

Is Unit Converter ++ free?
Unit Converter ++ is free to download, with no in-app purchases.
Is Calendar Clock free?
Calendar Clock costs $0.99, with no in-app purchases.
Do Unit Converter ++ or Calendar Clock have ads?
Unit Converter ++ shows ads; Calendar Clock does not.
Which is updated more often, Unit Converter ++ or Calendar Clock?
Unit Converter ++ ships an update every 9 months, and Calendar Clock every 41 months. Most recently, Unit Converter ++ was updated on August 14, 2026 and Calendar Clock on September 10, 2026.

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