Comparison

Unit Converter vs PowerTools

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 — 30 categories, 300+ units! Mila's Tools Unit Converter puts 30 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." 30 CONVERSION CATEGORIES Angle · Area · Bits & Bytes · Blood Sugar · Capacitance · Cooking · Current · Data Transfer Rates · Dates · Density · Energy · Flow Rate · Force · Fractions · Frequency · Fuel Economy · 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

PowerTools

This utility app provides a comprehensive suite of tools for daily and professional tasks. It includes calculators, text editors, QR code functions, audio tools, and more, all within a user-friendly interface to enhance efficiency.

Highlights
  • Calculation & Conversion Tools
  • Text Editing & Analysis
  • QR Code Generation & Scanning
  • Audio Recording & Text-to-Speech
  • Password & Random Number Generation
  • Pomodoro Timer & White Noise
Features
Read full description

Powertools – All-in-One Utility App! Powertools brings together a variety of essential tools for daily and professional use in a single app. Perform calculations, edit text, generate QR codes, record audio, and explore many more features. With its user-friendly interface and fast performance, Powertools helps you save time and boost efficiency. Key Features: Calculation & Conversion Tools: Percentage calculator, VAT calculator, tip calculator, power, temperature, volume, and weight converters. Text Tools: Text case converter, text cleaner, text comparator, text repeater, word counter, text sorter. QR & URL Tools: QR code generator and scanner, URL shortener and expander, URL encoder. Audio & Time Management Tools: Voice recorder, text-to-speech converter, white noise generator, pomodoro timer, tone generator. Extra Handy Tools: Password generator, random number generator, shipping size calculator, world clock, swipe photo tool. With Powertools, all the tools you need are in one app! Download now and simplify your daily tasks. LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Unit Converter4 screens
PowerTools4 screens

Verdict

The call

The clearest difference is ratings volume: Unit Converter at 1.4K against PowerTools's 4. Unit Converter also leads on update cadence (every 5 days vs every 2 weeks). PowerTools's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 88%). On price, ads, in-app purchases and monetization model 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 3 in-app purchases, starting at $0.99 per month and PowerTools sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PowerTools holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Unit Converter has 1.4K ratings behind it against 4, 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 100% of PowerTools's.

UpkeepUpdate frequency

Unit Converter ships an update every 5 days, PowerTools every 2 weeks. The most recent releases landed on September 24, 2026 and August 31, 2026 respectively.

Scorecard5 real differences · 5 level
Unit Converter versus PowerTools: the parameters behind the verdict, then further details
ParameterUnit ConverterPowerTools
PriceFreeFree
Rating4.8 (1.4K ratings)5.0 (4 ratings) — better
Positive reviews87.5% of reviews100.0% of reviews — better
Number of ratings1.4K — better4
Update frequencyEvery 5 days — betterEvery 2 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size13 MB23 MB
Age rating4+4+
DeveloperScott DeSapioSenol Cagir

Customer experience

Unit Converter

All ratings1,424 ratings
Positive95.1%
Neutral1.1%
Negative3.9%
Written reviews360 reviews
Positive87.5%
Neutral3.1%
Negative9.4%

PowerTools

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
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

PowerTools

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Unit Converter

Subscriptions2
  • Mila's Tools PRO Monthly$0.991 Month
  • Mila's Tools PRO Yearly$6.991 Year
One-time1
  • Mila's Tools PRO Lifetime$9.99
2 purchases

PowerTools

Subscriptions2
  • Monthly$2.991 Month
  • Annual$24.991 Year

Questions

Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Is PowerTools free?
PowerTools is free to download, with in-app purchases available.
Which has better reviews, Unit Converter or PowerTools?
PowerTools is rated higher. Unit Converter averages 4.8 out of 5 from 1.4K ratings, while PowerTools averages 5.0 from 4 ratings.
Do Unit Converter or PowerTools have ads?
Both Unit Converter and PowerTools show ads.
Which is updated more often, Unit Converter or PowerTools?
Unit Converter ships an update every 5 days, and PowerTools every 2 weeks. Most recently, Unit Converter was updated on September 24, 2026 and PowerTools on August 31, 2026.

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