Comparison

Unit Converter HD. vs Unit Converter & Dictionary

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

Head to head
About

Unit Converter HD.

Easily convert over 700 units across 30 categories with this powerful tool. It offers a user-friendly interface, dark mode support, and a backspace key for quick corrections. Save time on all your measurement conversion needs.

Highlights
  • 700+ Units of Measure
  • 30 Conversion Categories
  • Easy-to-Use Interface
  • Dark Mode Support
  • Backspace Key
Features
Read full description

The most powerful unit converter in the market. Helps you make easy conversion between more than 700+ various units of measure in 30 categories. Discover a universal assistant for all of your unit conversion needs. Features: √ 30 Categories √ 700+ Units of Measure √ Backspace key √ Extremely Easy-to-Use √ Supports Dark Mode Save Your Time. Quickly & Easily! Universer Unit Converter Free HD URL scheme is "EWUnitConverterFree://"

About

Unit Converter & Dictionary

This app offers comprehensive unit conversion across numerous categories, including specialized and traditional units. It also functions as a dictionary, explaining unit meanings, pronunciations, and providing fun facts. Real-time currency conversion is available, with an optional premium plan for AI assistance and ad removal.

Highlights
  • Extensive unit conversion categories
  • Unit dictionary with pronunciation and facts
  • Real-time currency conversion
  • Offline conversion capabilities
  • AI support for app usage (Premium)
  • Traditional and specialized unit support
Features
Read full description

An app that both converts units and works as a dictionary explaining what each unit means. Useful for everything from converting units in class to checking currency before a trip abroad. ■ A wide range of conversion categories • Length, area, volume, mass, speed, temperature, angle, pressure, energy, power, force, density, fuel economy, data size, and more • Includes lesser-known units too — traditional Japanese units, imperial units, nautical miles, carats, horsepower ■ Unit dictionary • Search across unit names, aliases, and symbols • Look up how a unit is pronounced, its rough scale, and fun facts • Jump straight from a search result into conversion mode ■ Currency conversion • Real-time currency conversion using up-to-date exchange rates ■ Built to be easy • Conversion and dictionary lookups work entirely on your device (only currency conversion needs a connection, to fetch exchange rates) ■ AI support (Premium) • Ask about units and conversion settings. Supported controls help prepare conversion; results are calculated by the app, not generated by AI. ■ Premium plan • AI help with app usage and supported actions • Up to 30 successful external AI responses per app and subscription each day; resets at midnight Japan Standard Time • AI requires an internet connection and consent to send data • Ads removed Good for: converting recipe measurements, studying science and math, or checking currency and units before an overseas trip. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Unit Converter HD.3 screens
Unit Converter & Dictionary4 screens

Verdict

The call

The clearest difference is ratings volume: Unit Converter HD. at 645 against Unit Converter & Dictionary's 1. Unit Converter HD. also leads on iOS requirement (13.0 vs 15.0). Unit Converter & Dictionary's advantage is rating (5.0 vs 4.7) and update cadence (every 3 weeks vs every 2 months). 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 HD. sells 1 one-off in-app purchase and Unit Converter & Dictionary sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Unit Converter & Dictionary holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Unit Converter HD. has 645 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Unit Converter HD. ships an update every 2 months, Unit Converter & Dictionary every 3 weeks. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Unit Converter HD. versus Unit Converter & Dictionary: the parameters behind the verdict, then further details
ParameterUnit Converter HD.Unit Converter & Dictionary
PriceFreeFree
Rating4.7 (645 ratings)5.0 (1 ratings) — better
Positive reviews93.8% of reviews—
Number of ratings645 — better1
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size86 MB13 MB
Age rating4+4+
Developer良峰 侯Mikoto Gateway

Customer experience

Unit Converter HD.

All ratings644 ratings
Positive94.7%
Neutral2.2%
Negative3.1%
Written reviews146 reviews
Positive93.8%
Neutral2.7%
Negative3.4%

Unit Converter & Dictionary

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Unit Converter HD.

Reported bugs

2 issues
  • Freezing or crashing on some devices
  • Display issues with certain units

Requested features

3 requests
  • Add support for US weights (tons, lbs., oz.)
  • Implement portrait mode support
  • Provide more customization options

Unit Converter & Dictionary

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Unit Converter HD.

One-time1
  • Remove Ads Pack$1.99
1 purchases

Unit Converter & Dictionary

Subscriptions1
  • プレミアムプラン$0.991 Month

Questions

Is Unit Converter HD. free?
Unit Converter HD. is free to download, with in-app purchases available.
Is Unit Converter & Dictionary free?
Unit Converter & Dictionary is free to download, with in-app purchases available.
Which has better reviews, Unit Converter HD. or Unit Converter & Dictionary?
Unit Converter & Dictionary is rated higher. Unit Converter HD. averages 4.7 out of 5 from 645 ratings, while Unit Converter & Dictionary averages 5.0 from 1 ratings.
Do Unit Converter HD. or Unit Converter & Dictionary have ads?
Both Unit Converter HD. and Unit Converter & Dictionary show ads.
Which is updated more often, Unit Converter HD. or Unit Converter & Dictionary?
Unit Converter HD. ships an update every 2 months, and Unit Converter & Dictionary every 3 weeks. Most recently, Unit Converter HD. was updated on October 29, 2026 and Unit Converter & Dictionary on October 31, 2026.

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