Comparison

Unit Converter vs Night 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

This app offers a comprehensive unit conversion tool with over 300 units across 27 categories. It supports compound units, date calculations, and conversions between various number systems, including historical units. The interface is designed for ease of use with smart keyboards and customizable display options.

Highlights
  • 27 conversion categories
  • 300+ units
  • Compound unit support
  • Date calculator
  • Fractions and number conversions
  • Historical units
  • Customizable interface
Features
Read full description

Convert everything - 31 categories, 300+ units! Mila's Tools Unit Converter puts 31 converters in your pocket at no cost. Whether you need to convert temperatures for a recipe, check tire pressure in PSI, find your ring size across international standards, or calculate the days until a deadline, this app handles it all with precision and ease. What customers are saying: ***** "Get it! Nothing better than this!" ***** "This is the best quick ref tool I have come across to date" ***** "Undoubtedly the best conversion app in the App Store." ***** "Best app for me so far." ***** "Intuitive interface. The app design is so easy you'll actually use it." 31 CONVERSION CATEGORIES Angle · Area · Bits & Bytes · Blood Sugar · Capacitance · Cooking · Current · Data Transfer Rates · Dates · Density · Energy · Flow Rate · Force · Fractions · Frequency · Fuel Economy · Gauges · Illuminance · Length · Numbers · Power · Pressure · Ring Sizes · Shoes · Slope · Speed · Temperature · Time · Torque · Volume · Weight COMPOUND UNITS Work with real-world measurements like feet + inches, pounds + ounces, or gallons + quarts. Values auto-normalize — type 13 inches and see 1 foot 1 inch instantly. DATE CALCULATOR Find the exact number of days, weeks, months, and years between any two dates. Add or subtract time from a date with quick-action shortcuts like "90 Days from Today" or "End of Year." DATE CONVERTER See any date across 10 calendar systems — Gregorian, Islamic, Hebrew, Chinese, Persian, Indian National, Coptic, Ethiopic, Buddhist, and Japanese — plus Unix timestamps, Julian Day numbers, and ISO 8601 week dates. Tap the info icon for details on each calendar system. FRACTIONS & NUMBERS Convert between fractions, decimals, and percentages. Translate numbers into Roman numerals, binary, octal, and hexadecimal. Explore magnitudes from thousands to decillions. RING SIZES Convert between US, EU, Swiss, Japanese, Chinese (Mainland), and Hong Kong ring sizing standards. View inner diameter and circumference in millimeters for precise measurements. HISTORICAL UNITS Go beyond modern measurements with ancient Egyptian, Mesopotamian, Greek, Roman, and Biblical units of length. BUILT FOR PRECISION Choose automatic smart formatting or set manual decimal precision from 0 to 10 places. Locale-aware number formatting respects your region's separators and conventions. SMART CUSTOM KEYBOARDS Purpose-built keyboards for every input type — numeric, whole number, Roman numeral, binary, octal, and hexadecimal — so you never have to fight autocorrect. DESIGNED FOR YOU • Dark mode with rich, category-specific color themes • Comfortable or compact view styles • Show or hide any unit in any category • Available on iPhone, iPad, and Mac Download now and experience the most comprehensive unit conversion app available! - - - - - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Night Clock

This app displays a simple analog clock designed for low-light conditions, featuring customizable colors and an optional sweep second hand. It can automatically adjust brightness based on sunset and sunrise.

Highlights
  • Customizable analog clock face
  • Multiple color options
  • Automatic brightness adjustment
  • Optional sweep second hand
  • Easy-to-read in darkness
Features
Read full description

Night Clock is the simplest analogue clock for your nightstand, designed to be easy on your eyes in darkness so you don't wake yourself up trying to figure out what time it is. Dim your display and use the default Classy Red face for the lowest light levels, get a little daring with Fizzy Orange, or blend in with your decor with Oak Brown. There are a dozen colour choices* to choose from. If you allow Night Clock to use your location, it will slowly dim the colours after sunset and return to full brightness by sunrise. Or, if you choose one of the new "night and day" schemes, the colour will change completely between night and day. This capability works best in conjunction with the iOS Auto-Brightness setting being on. (General > Accessibility > Display Accommodations.) And if you're just too wired to sleep, turn on the sweep second hand with a tap on the sweep button, or just press and hold on the face for 2 seconds. The sweep second hand will make two full revolutions and then slowly fade out. You might find that as it fades, so do you to restful sleep. * Original colour design by Andrew J. Clark.

Screenshots

Unit Converter4 screens
Night Clock4 screens

Verdict

The call

The clearest difference is price: Unit Converter at Free against Night Clock's $1.99. Unit Converter also leads on rating (4.8 vs 4.0) and review sentiment (88% vs 50%). Night Clock's advantage is in-app purchases (none vs 3) and ads (none vs shown). On 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; Night Clock costs $1.99 up front. Unit Converter sells 3 in-app purchases, starting at $2.99 per month. Night Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Unit Converter holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Unit Converter has 1.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 88% of Unit Converter's written reviews are positive against 50% of Night Clock's.

UpkeepUpdate frequency

Unit Converter ships an update weekly, Night Clock every 39 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard9 real differences · 1 level
Unit Converter versus Night Clock: the parameters behind the verdict, then further details
ParameterUnit ConverterNight Clock
PriceFree — better$1.99
Rating4.8 (1.5K ratings) — better4.0 (1 ratings)
Positive reviews87.7% of reviews — better50.0% of reviews
Number of ratings1.5K — better1
Update frequencyWeekly — betterEvery 39 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.0 — better
Further details — not scored
Size13 MB3 MB
Age rating4+4+
DeveloperScott DeSapioAllister Jenks

Customer experience

Unit Converter

All ratings1,485 ratings
Positive95.2%
Neutral1.0%
Negative3.8%
Written reviews365 reviews
Positive87.7%
Neutral3.0%
Negative9.3%

Night Clock

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Bugs and requests

Unit Converter

Reported bugs

2 issues
  • Crashes or freezes on some devices
  • Conversion results not displaying properly

Requested features

3 requests
  • Ability to customize order of conversion units
  • Addition of more specialized units (e.g. astronomical distances)
  • Improved scrolling functionality on all devices

Night Clock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Unit Converter

Subscriptions2
  • Mila's Tools PRO Monthly$2.991 Month
  • Mila's Tools PRO Yearly$6.991 Year
One-time1
  • Mila's Tools PRO Lifetime$9.99
None

Night Clock

No in-app purchases

Questions

Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Is Night Clock free?
Night Clock costs $1.99, with no in-app purchases.
Which has better reviews, Unit Converter or Night Clock?
Unit Converter is rated higher. Unit Converter averages 4.8 out of 5 from 1.5K ratings, while Night Clock averages 4.0 from 1 ratings.
Do Unit Converter or Night Clock have ads?
Unit Converter shows ads; Night Clock does not.
Which is updated more often, Unit Converter or Night Clock?
Unit Converter ships an update weekly, and Night Clock every 39 months. Most recently, Unit Converter was updated on October 24, 2026 and Night Clock on October 21, 2026.

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