Stacks is the only app in the AppStore that lets you convert currencies right in your safari browser. Stacks automatically convert prices in a webpage to your desired currency. It also comes with two today widgets - Quick Converter and Denomination, so your currency conversion is always just a swipe away. Stacks is designed to be simple and straight forward. With Stacks you can bookmark your currency conversions for future reference. Exchange rates are updated at launch time and frequency at which you set. You can disable it when traveling to avoid any roaming charges. Since Stacks stores the exchange rates, it can work without any internet connection.


• Apple Watch Support
• Safari Extension - ability to currency convert in your browser
• Widgets - Exchange Rates, Quick Converter
• Supports over 160+ World Currencies
• Bookmark List
• Built In Calculator
• Transaction/Exchange Fee
• Currency Rounding
• Can work without internet connection
• Dark / Light mode with multiple color schemes
• Supports Dynamic Type ( Settings > General > Text Size )
• Supports VoiceOver ( Now, Stacks is accessible to users with visual impairments. So they can drive the interface even if they can’t see it)
• Functional and easy to use
• Clean Interface & Natural Gestures
• Universal App - iPhone and iPad
• Designed for iPhone 7 and iPhone 7 Plus
• Optimized for iOS 10
• Localized in French, German, Italian, Japanese, Simplified Chinese and Spanish

Safari Extension supports currency conversions from USD,GBP,EUR,JPY,CNY,SGD,HKD,INR to your selected favorite currencies.


*** Stacks is featured as One of "The 14 most beautifully designed apps of 2014" - VentureBeat ***
*** Stacks is featured as One of "65 of the best iOS apps launched in 2014" - TheNextWeb ***

"It’s strange that a $2 currency app can leave such a strong impression, but trust us: It’s as thoughtfully designed as it is handy." - VentureBeat
"There's a certain magic to Stacks the first time you see its extension in action" - MacStories
"Currency conversion can be beautiful too!" - TheNextWeb
"Stacks managed to leave us with our jaw on the floor with its iOS 8 share extension." - BeautifulPixels
"Stacks lets you convert currencies right within Safari and Notification Center in iOS 8" - AppAdvice

For any feedback and suggestions, e-mail us at

What’s New

Version 2.7.4

Bug Fixes

Ratings and Reviews

2.4 out of 5
7 Ratings

7 Ratings

almond812 ,

No comma? 😂😂😂

Trying to convert russian into u.s but there is no comma, i reported this and now there stumped, so i had to use a calculator 😂😂😂 but in all still a good app 3 stars it is

Ivan Castilho ,

State of the Art

State of the Art for this category. Some improvements can be made, but it’s far ahead of any other App.

subface ,

Beautiful but...

Really nice looking app and is one of the better currency converters I've tried, but there are some unfortunate UI mistakes: 1) why flip the number pad orientation from the native one everyone is used to on the phone? It makes it disorienting. 2) you're using a refresh icon for flipping the currencies and since you don't label any of your icons I didn't even think to try that one until after I'd manually switched the currencies. 3) I get why you have the swipe to favourite or unfavourite in the main currencies list, but in the settings' favourite currencies list that's dedicated to favouriting it's bizarre (and frustrating) that tapping a currency does nothing. 4) having an 8 step onboarding carousel is 4-8 steps more than anyone is going to remember and better for explaining why we should use your product, not for tips about all the stuff you hid and you expect us to remember months later.

It has a lot of promise if you fix the usability issues that right now just make it frustrating.


Raja V
19.9 MB

Requires iOS 8.0 and watchOS 8.2 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Japanese, Simplified Chinese, Spanish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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