Readdle is a Ukrainian mobile application development company. The company research and development is based in Odesa, Ukraine. The operation is mostly built around the App Store,[5] cumulatively generating over 100 million downloads.[6] The company was founded by former college roommates Igor Zhadanov, Alex Tyagulsky, Andrian Budantsov, and Dmitry Protserov.[7]
Documents (previously ReaddleDocs) is a file management application.[9] The app was Readdle's first product, and was developed because co-founders Alex Tyagulsky and Andrian Budantsov wished to be able to read books on their iPhones.[7] It was initially released as a Safari-based web service in 2007.[10] Later, Apple asked Readdle to submit the app (then called ReaddleDocs) to become one of the 500 apps available on the App Store when it launched on July 10, 2008.[11] After Wall Street Journal writer Walt Mossberg endorsed the app, sales increased ninefold, netting the company $500–1000 a week.[7] In 2013, the app rebranded as Documents.[12]
PDF Expert is a PDF editing app for iPhone, iPad and Mac.[13][14]
The app allows a user to read, annotate and edit PDFs, change text and images, fill in forms and sign contracts.[15]
PDF Expert was initially launched for iOS in 2010 for the first iPad and is now supported on the iPad, iPhone, and Mac.[16]
Spark is an email application for Windows, iOS, macOS, and Android devices.[18][19][20][21][22]Lifehacker wrote that Spark was the best alternative for Mailbox users when that service went offline.[23] It was released on April 2, 2019, and was Readdle's first app released on Android.[24]
Spark +AI
In 2023, Spark introduced artificial intelligence features for premium users. Dubbed 'Spark +AI', the service first launched by utilising Microsoft Azure OpenAI software to draft, rewrite, and contour emails on behalf of users.[25] In 2024, Spark +AI continued to enhance its service by rolling out a new feature which supports AI content generation in the style of the end-user, allowing for more human-like/natural email construction.[26]
