Comparison

Converter vs Currency & 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 app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.

Highlights
  • Currency converter with live exchange rates
  • Over 300 engineering and scientific units
  • Specialized hardness converter
  • Timezone conversion
  • Running pace calculator
  • Integrated standard calculator
  • Conversion history log
Features
Read full description

Trelleborg’s “Unit and Hardness Converter” converts a comprehensive list of units (incl. currencies) in an easy way. In addition, the app has a set of other useful features on board, like timezone conversion, percentage calculations, a running pace calculator and more What our users say: “Have been using it forever, never tried other converter as this one does the job perfectly” - Lazareth_fr “Fabulous resource, but also a functional masterpiece!” -Otto. “This is needed by all engineers. So simple and easy to use” -JLa03.   FEATURES • Easy-to-use interface • Currency converter with in-app exchange rate update functionality • Over 300 engineering and scientific conversion units in 32 categories • Hardness converter with 16 conversion tables based on ASTM E140-07 and ISO-18265 for quick conversion between different scales • Video library: features the extensive Trelleborg Sealing Solutions YouTube library • Toggle between units • Switch between dark and white theme • Conversion history log • Create favorite lists • Standard calculator integrated with unit converter DIMENSIONS • Area • Currency • Current • Data • Density • Distance • Dynamic Viscosity • Energy • Force • Frequency • Kinematic Viscosity • Moment of inertia • Power • Prefixes • Pressure • Speed • Strength • Temperature • Time • Torque • Volume • Weight • Fuel Consumption • Glucose • Vacuum • Numbers • Illumination • Radioactivity • Radiation (absorbed) • Angles • Volume Flow Rate • Calorie • Metric Prefixes • Typography • Electric Charge OTHER MISCELLANEOUS CATEGORIES • Timezone conversion • Clothing sizes / Shoe sizes • International power plugs • Running pace calculator • Percentage calculator • Pace • Hex, Binary, Decimal • BMI (metric/inch) HARDNESS SCALES INCLUDED • Rockwell (HRC, HRA, HRD, HRF, HRG, HRE, HR-15-N, HR-30N, HR-45-N, HR45-T, HR-15T, HR-30T, HR45-T) • Brinell (HBW, HBS) • Vickers (HV, • Knoop (HK) The app is available in English, German and Chinese languages. Download now or contact us with any questions.

About

Currency & Unit Converter #

This app offers a comprehensive solution for converting units across more than 20 common categories, including over 400 units. It supports mixed units and currency exchange with real-time updates, making it useful for work, study, and daily life. The app features a scientific calculator and a user-friendly interface.

Highlights
  • 20+ Categories & 400+ Units
  • Mixed-Unit Support
  • Currency Exchange
  • Scientific Calculator
  • Widget Support
  • Online DB & Currency Rate Updates
Features
Read full description

◉ Featured: Converter+ greatly supports a Database with 20 available common categories and over 400 units (Include mixed unit such as ft + in, m + cm,...) so Converter+ can help you solve almost every conversion problem in your Work, your Study and also your daily life. ◉ Perfect Design: Converter+ has a shape of arc combined with sci-fi style offering convenient & interesting user experience. ◉ Official Website: Http://iPhoneCalculator.com ◉ Features: ▸ Support Widget ▸ 20+ Categories & 400+ Units ▸ Favorite Category. ▸ Currency(Money) Exchange ¹ ▸ Universal Converter App ▸ Retina Display Support ² ▸ Mixed-Unit Support ▸ Scientific Calculator ▸ Support Widget ▸ Online DB Update ▸ Online Update Currency Rate ³ ¹: Source: Yahoo! Finance (Most 27 popular Currencies) ²: Both iPhone / iPad Retina Display ³: Auto Update every 3 hours. New Data Base Update available monthly. Converter Infinity - The Ultimate iPhone/iPad Converter. We love your feedback, Thanks a lot ! ◉ Categories: Length, Area, Volume, Mass, Angle, Currency, Data, Data Transfer, Energy, Force, Power, Fuel Consumption, Pressure, Radioactivity, Resistance, Resistivity, Speed, Temperature, Time, Volume Flow Rate.

Screenshots

Converter4 screens
Currency & Unit Converter #4 screens

Verdict

The call

The clearest difference is rating: Converter at 4.9 against Currency & Unit Converter #'s 4.3. Converter also leads on review sentiment (94% vs 73%) and update cadence (every 2 months vs every 6 months). Currency & Unit Converter #'s advantage is iOS requirement (8.0 vs 15.6). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Converter holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 981 and 215 respectively. Written reviews point the same way: 94% of Converter's written reviews are positive against 73% of Currency & Unit Converter #'s.

UpkeepUpdate frequency

Converter ships an update every 2 months, Currency & Unit Converter # every 6 months. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

Scorecard5 real differences · 5 level
Converter versus Currency & Unit Converter #: the parameters behind the verdict, then further details
ParameterConverterCurrency & Unit Converter #
PriceFreeFree
Rating4.9 (981 ratings) — better4.3 (215 ratings)
Positive reviews93.9% of reviews — better72.7% of reviews
Number of ratings981 — better215
Update frequencyEvery 2 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.68.0 — better
Further details — not scored
Size37 MB25 MB
Age rating12+4+
DeveloperTrelleborg Sealing SolutionsIncpt.Mobis

Customer experience

Converter

All ratings897 ratings
Positive98.1%
Neutral1.3%
Negative0.6%
Written reviews608 reviews
Positive93.9%
Neutral3.3%
Negative2.8%

Currency & Unit Converter #

All ratings216 ratings
Positive82.9%
Neutral5.1%
Negative12.0%
Written reviews143 reviews
Positive72.7%
Neutral7.7%
Negative19.6%

User reviews

Converter

From 981 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Accurate and fast conversions
  • 💡 Comprehensive coverage of units and categories
  • 🔒 No ads or hidden fees
  • 💡 Useful currency converter

Room to improve

  • 🐛 Currency conversion rates can be outdated
  • 🔍 Difficult to find specific conversions due to large number of options
  • 💡 Lack of ability to set favorite conversions as default

Currency & Unit Converter #

From 215 App Store ratings

What we love

  • 🎨 Beautiful and attractive visual design
  • 🔄 Comprehensive range of unit conversions
  • ⚡ Fast and efficient conversion calculations
  • 🆓 Free app with no advertisements
  • 🎡 Innovative wheel/dial interface concept

Room to improve

  • 😕 Confusing and unintuitive user interface
  • 🎨 Overly complex design prioritizes aesthetics over usability
  • ⏱️ Steep learning curve for new users
  • 🔄 Wheel selection mechanism is slow and cumbersome
  • 📊 Too many features make the app overwhelming

Bugs and requests

Converter

Reported bugs

2 issues
  • Occasional crashes on startup for non-English/German users
  • Conversion from meters to feet does not show inches

Requested features

3 requests
  • Add fuel efficiency conversions
  • Allow users to set favorite conversions as default
  • Improve currency conversion rate updates

Currency & Unit Converter #

Reported bugs

7 issues
  • Widget does not change units of measurement
  • Widget arrows to cycle through options don't function
  • App crashes frequently
  • App crashes on first touch
  • Currency conversion display issues
Show 2 more
  • Settings changes not persisting properly
  • App freezes or becomes unresponsive

Requested features

13 requests
  • Tutorial or onboarding guide for new users
  • Favorites or custom presets for frequently used conversions
  • Reverse Polish Notation (RPN) calculator support
  • Remember last selected units between app sessions
  • Ability to customize which conversion categories appear
Show 8 more
  • Larger back/navigation arrow button
  • Round calculator buttons
  • Simpler, more streamlined interface option
  • Additional engineering unit conversions (pressure, torque, force, energy)
  • Comma display in currency exchange input field
  • Knots unit in speed conversions
  • Pints to Pints (US) conversion option
  • Calculator app with similar design

In-app purchases

None

Converter

No in-app purchases

None

Currency & Unit Converter #

No in-app purchases

Questions

Is Converter free?
Converter is free to download, with no in-app purchases.
Is Currency & Unit Converter # free?
Currency & Unit Converter # is free to download, with no in-app purchases.
Which has better reviews, Converter or Currency & Unit Converter #?
Converter is rated higher. Converter averages 4.9 out of 5 from 981 ratings, while Currency & Unit Converter # averages 4.3 from 215 ratings.
Do Converter or Currency & Unit Converter # have ads?
Neither Converter nor Currency & Unit Converter # shows ads.
Which is updated more often, Converter or Currency & Unit Converter #?
Converter ships an update every 2 months, and Currency & Unit Converter # every 6 months. Most recently, Converter was updated on October 25, 2026 and Currency & Unit Converter # on October 23, 2026.

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