Comparison

Currency 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

Currency

This app offers an offline currency converter with up-to-date exchange rates for over 160 currencies. It's ideal for travelers needing to convert money abroad without an internet connection. An optional upgrade removes ads and unlocks all features.

Highlights
  • Offline currency conversion
  • 160+ currencies supported
  • Up-to-date exchange rates
  • Travel abroad companion
  • Ad-free option
Features
Currently charting
Read full description

A powerful yet simple currency converter, Currency provides up-to-date exchange rates for over 160 currencies and countries! Great for when you travel abroad. Currency has been the #1 currency converter for iPhone since 2008, launching as one of the first 500 apps in the App Store. Available for iPhone, iPad, and Apple Watch. ——— Upgrade to Currency+ to remove ads & unlock all features. Subscriptions will be charged to your credit card through your iTunes account. Subscription is offered for 1-year periods ($19.99, price may vary by location), and will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Manage your subscriptions in Account Settings after purchase. Free trials may only be used once. Any unused portion of a free trial will be forfeited if you purchase a subscription. ——— Terms of Service: http://currencyapp.com/terms/ Privacy Policy: http://currencyapp.com/privacy/

About

Unit Converter

Easily convert between a wide range of units across 20 categories, including length, weight, temperature, and more. Features live currency updates for 155 world currencies, refreshed daily. Designed for simplicity and visual appeal.

Highlights
  • 20 conversion categories
  • Live currency updates
  • 155 world currencies
  • Daily exchange rate refresh
  • Simple and beautiful design
  • Swap units functionality
Features
Currently charting
Read full description

This is Units Plus Converter SWAP units by pressing button on keypad (lower left) ***Now with LIVE Currency Updates for all major currencies in the world*** Very simple and beautifully designed unit converter with 20 categories and many different units: CONVERT: *Angle *Area *Currency (155 world currencies updated every day.) *Data-computer data (byte, kilobyte, megabyte, etc.) *Data-Network Speed *Energy *Force *Fuel-Mileage *Length *Pants *Power *Pressure *Shoes *Speed *Temperature *Time (days, weeks, hours, etc.) *Tops-Clothing *Torque *Volume (dry and wet) *Weight-mass Currency exchange rates are downloaded once a day when app is opened. Every download uses very small amount of data. Around 1-2kb. Internet connection required. 155 currencies available - This is all world currencies with their respective country flags.

Screenshots

Currency4 screens
Unit Converter4 screens

Verdict

The call

The clearest difference is update cadence: Currency at every 5 weeks against Unit Converter's every 3 months. Currency also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume 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. Currency sells 3 in-app purchases, starting at $19.99 per year and Unit Converter sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Currency against 4.8 for Unit Converter. Both are backed by a comparable volume of ratings — 79K and 199K respectively. Written reviews are what separate them: 80% of Currency's written reviews are positive against 76% of Unit Converter's.

UpkeepUpdate frequency

Currency ships an update every 5 weeks, Unit Converter every 3 months. Both last shipped on October 27, 2026.

Scorecard3 real differences · 8 level
Currency versus Unit Converter: the parameters behind the verdict, then further details
ParameterCurrencyUnit Converter
PriceFreeFree
Rating4.8 (79K ratings) — better4.8 (199K ratings)
Positive reviews80.2% of reviews — better75.6% of reviews
Number of ratings79K199K — better
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#71 — better#77
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size72 MB13 MB
Age rating4+4+
DeveloperJeffrey GrossmanAlan Mrvica

Customer experience

Currency

All ratings78,632 ratings
Positive96.7%
Neutral1.7%
Negative1.5%
Written reviews1,493 reviews
Positive80.2%
Neutral5.6%
Negative14.3%

Unit Converter

All ratings198,234 ratings
Positive96.1%
Neutral1.9%
Negative2.0%
Written reviews1,699 reviews
Positive75.6%
Neutral4.8%
Negative19.7%

User reviews

Currency

From 79K App Store ratings

What we love

  • 💡 Offline currency conversion
  • 🚀 Fast and responsive
  • 👍 Easy to customize currency list
  • 👍 Useful for frequent travelers
  • 👍 Accurate and up-to-date exchange rates

Room to improve

  • 🐛 Occasional app freezes or crashes
  • 🐛 Saved currencies reset after updates
  • 💰 Subscription model for premium features
  • 🔍 Inaccurate or misleading exchange rates

Unit Converter

From 199K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Comprehensive conversions
  • 💡 Useful for travel and cooking
  • 🚀 Quick and efficient
  • 👍 Intuitive interface

Room to improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions
  • 💰 Pro version not worth the cost

Bugs and requests

Currency

Reported bugs

3 issues
  • App freezes when opening
  • Currencies reset to default after updates
  • Widget display issues

Requested features

4 requests
  • Historical currency rate trends
  • Ability to manually input exchange rates
  • Improved Apple Watch integration
  • Dark mode option

Unit Converter

Reported bugs

2 issues
  • Forced 5-star review prompt
  • Inaccurate weight/stone conversion

Requested features

3 requests
  • Add calorie/kJ conversion
  • Allow negative number input
  • Improve ability to quickly switch between conversions

In-app purchases

3 purchases

Currency

Subscriptions1
  • Currency+7 Days trial$19.991 Year
One-time2
  • Currency ProFree
  • Currency Pro$19.99
4 purchases

Unit Converter

Subscriptions4
  • Premium3 Days trial$3.991 Month
  • Premium$6.991 Month
  • Premium7 Days trial$24.991 Year
Show 1 more
  • Premium$34.991 Year

Questions

Is Currency free?
Currency is free to download, with in-app purchases available.
Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Which has better reviews, Currency or Unit Converter?
Currency is rated higher. Currency averages 4.8 out of 5 from 79K ratings, while Unit Converter averages 4.8 from 199K ratings.
Do Currency or Unit Converter have ads?
Both Currency and Unit Converter show ads.
Which is updated more often, Currency or Unit Converter?
Currency ships an update every 5 weeks, and Unit Converter every 3 months. Most recently, Currency was updated on October 27, 2026 and Unit Converter on October 27, 2026.
Which is more popular, Currency or Unit Converter?
Currency currently peaks at #71 in the App Store charts, and Unit Converter at #77. Chart position reflects recent download velocity rather than total install base.

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