Comparison

Converter vs Unit Converter

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

Head to head
About

Converter

This comprehensive tool offers over 14,000 conversion possibilities across 30 categories, providing precise calculations for students, scientists, and travelers. It features an educational layout, smart tooltips, and currency updates from trusted sources.

Highlights
  • Over 14,000 conversion combinations
  • Precision up to 100 digits
  • Scientific, standard, and custom formats
  • Educational layout with visible unit values
  • User-friendly interface
  • Easy export or copy/paste of results
  • Currency updates via IMF
Features
Read full description

Converter – The Ultimate Measurement & Conversion Tool Converter is your ultimate measurement and conversion tool, designed to educate and empower. With over 14,000 conversion possibilities across 30 categories, it’s the most complete and precise calculator you'll ever need — whether you're a student, scientist, engineer, traveler, or simply curious. Explore a wide range of categories: Acceleration, Angle, Area, Base, Body Height, Consumption, Currency (auto-updated via IMF), Data Storage, Data Transfer, Density, Electricity, Energy, Force, GPS, Illuminance, Length, Luminance, Mass, Permeability, Power, Pressure, Radioactivity, Temperature, Time, Time Zone, Torque, Velocity, Viscosity, Volume, Volume Flow Rate — and more. Key Features: • Over 14,000 conversion combinations • Precision up to 100.000 digits • Scientific, standard, and custom formats • Educational layout – all unit values visible in one glance • Clean, user-friendly interface • Easy export or copy/paste of high-precision results • Smart tooltips for every item • Currency updates powered by the International Monetary Fund Trusted sources: • BIPM – Bureau International des Poids et Mesures • NIST – National Institute of Standards and Technology • IMF – International Monetary Fund • IANA – Internet Assigned Numbers Authority • Wikipedia (for accessible context) Whether you're solving school problems or running lab simulations, Converter gives you clarity, confidence, and insight. It’s more than just a calculator — it’s a learning companion built for precision and discovery. Created with love and accuracy by an experienced developer passionate about making complex knowledge accessible to all. Designed not just to convert — but to teach, explain, and inspire clarity.

About

Unit Converter

This utility app offers conversion for over 100 units across 18 categories, including length, mass, temperature, and digital storage. It supports a wide range of specific units within each category and provides a clean, ad-free interface for quick conversions.

Highlights
  • 18 unit categories
  • Over 100 units supported
  • Ad-free experience
  • Supports multiple devices
  • Pro version with free trial
Read full description

Support 18 categories of units, convert over 100+ units: - Angle: Degrees, Radians, Grad, Arcseconds, Arcminutes, Revolutions - Area: Mm², Square Kilometers, Square Meters, Square Centimeters, Mm², Μm², Nm², Square Inches, Square Feet, Square Yards, Square Miles, Acres, Ares, Hectares - Base: Binary, Octal, Decimal, Hexadecimal - Digital Storage: Bits, Bytes, Mib, Gib, Tib, Pib, Megabytes, Gigabytes, Terabytes, Petabytes - Electric Charge: C, Mah, Kah, Ah, Mah, Μah - Electric Potential Difference: Mv, Kv, Volts, Mv, Μv - Electric Resistance: Mω, Kω, Ohms, Mω, Μω - Energy: Kilojoules, Joules, Kilocalories, Calories, Kilowatt-Hours - Frequency: Thz, Gigahertz, Megahertz, Kilohertz, Hertz, Mhz, Μhz, Nhz - Fuel Efficiency: Liters Per 100 Kilometers, Miles Per Gallon, Miles Per Imp. Gallon - Length: Millimeters, Centimeters, Decimeters, Meters, Kilometers, Light Years, Inches, Feet, Yards, Miles - Mass: Kilograms, Grams, Dg, Cg, Milligrams, Micrograms, Ng, Pg, Ounces, Pounds, Stones, Metric Tons, Tons, Carats, Troy Ounces, Slug - Power: Tw, Gigawatts, Megawatts, Kilowatts, Watts, Milliwatts, Μw, Nw, Pw, Fw, Horsepower - Pressure: N/M², Gpa, Mpa, Kpa, Hectopascals, Inches Of Mercury, Bar, Millibars, Millimeters Of Mercury, Pounds-Force Per Square Inch - Speed: Kilometers Per Hour, Meters Per Second, Knots - Temperature: Degrees Celsius, Degrees Fahrenheit, Kelvins - Time (Duration): Milliseconds, Seconds, Minutes, Hours, Days, Weeks, Months, Years, Decade, Century - Volume: Megaliters, Kl, Liters, Deciliters, Centiliters, Milliliters, Cubic Kilometers, Cubic Meters, Dm³, Mm³, Cubic Inches, Cubic Feet, Cubic Miles Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Converter3 screens
Unit Converter4 screens

Verdict

The call

The clearest difference is price: Unit Converter at Free against Converter's $0.99. Unit Converter also leads on review sentiment (100% vs 57%) and update cadence (every 9 days vs every 5 months). Converter's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 15.0). On rating, ads 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; Converter costs $0.99 up front. Unit Converter sells 4 in-app purchases, starting at $0.99 per month. Converter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Converter against 4.9 for Unit Converter. That said, the two scores are not equally well evidenced: Unit Converter has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 57% of Converter's written reviews are positive against 100% of Unit Converter's.

UpkeepUpdate frequency

Converter ships an update every 5 months, Unit Converter every 9 days. The most recent releases landed on September 10, 2026 and June 10, 2026 respectively.

Scorecard7 real differences · 3 level
Converter versus Unit Converter: the parameters behind the verdict, then further details
ParameterConverterUnit Converter
Price$0.99Free — better
Rating5.0 (2 ratings) — better4.9 (17 ratings)
Positive reviews57.1% of reviews100.0% of reviews — better
Number of ratings217 — better
Update frequencyEvery 5 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPod, MaciPhone, iPad, iPod, Mac, Vision Pro — better
Requires iOS12.0 — better15.0
Further details — not scored
Size67 MB15 MB
Age rating4+4+
DeveloperNic KolbeZIJIAN CHEN

Customer experience

Converter

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive57.1%
Neutral0.0%
Negative42.9%

Unit Converter

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Converter

No in-app purchases

4 purchases

Unit Converter

Subscriptions1
  • Pro Version (1 Month)14 Days trial$0.991 Month
One-time3
  • 1 cup of orange juice.$0.99
  • 1 litre of orange juice.$2.99
  • Pro Version (Lifetime)$3.99

Questions

Is Converter free?
Converter costs $0.99, with no in-app purchases.
Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Which has better reviews, Converter or Unit Converter?
Converter is rated higher. Converter averages 5.0 out of 5 from 2 ratings, while Unit Converter averages 4.9 from 17 ratings.
Do Converter or Unit Converter have ads?
Neither Converter nor Unit Converter shows ads.
Which is updated more often, Converter or Unit Converter?
Converter ships an update every 5 months, and Unit Converter every 9 days. Most recently, Converter was updated on September 10, 2026 and Unit Converter on June 10, 2026.

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