Based on our record, FileApp seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The names are similar. That is Apple ios Files app you referred to but the one I am looking for (paid for many years ago) is FileApp at https://fileapp.com. Source: almost 3 years ago
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Adobe Reader - Adobe Acrobat Reader is a free tool for viewing documents that have been stored in Adobe's Portable Document Format (PDF).
Documents by Readdle - A central hub for all your files.
PDF Reader Pro - PDF Reader Pro is an all-in-one PDF office supporting to Read, Annotate, Edit, OCR, Convert, Create & Fill Form, Sign PDFs, TTS on Mac, iOS, Android, and Windows.
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Freefileviewer - Free viewer for PDF, DOC, DOCX, PHP, CFG, DAT etc. files