Readdle Technologies Limited

Readdle’s own blog credits four college friends in Odesa, Ukraine — Igor Zhadanov, Alex Tyagulsky, Andrian Budantsov, and Dmitry Protserov — with founding the company in 2007 after a call from Apple HQ asking if they could build for the brand-new App Store. "We created our first app ReaddleDocs... for ourselves and people like us," CEO Igor Zhadanov says on the company’s own site.

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PDF Expert

$139.99 one-time via the Mac App Store (Lifetime license, Mac only); or $49.99/yr (Essential) to $79.99/yr (Pro) via pdfexpert.com, covering iPhone, iPad, and Mac together. Free trial available; no permanent free tier found

Readdle’s PDF editor for Mac, iPhone, and iPad — edit original text, sign, convert, and OCR scanned documents, from $49.99/yr or $139.99 once for Mac only.

Utilities Screen Mac App Store Verified August 29, 2026