Okular is a Universal Document Viewer. Multi-platform, fast and packed with features, Okular allows you to read PDF documents, comics and EPub books, browse images, visualize Markdown documents, and much more.
With Okular’s “Annotation Mode” you can easily add inline and popup notes, highlight and underline text, or even add your own text on the fly. The Selection Mode allows you to copy and paste almost anything from your documents to elsewhere. And, if the text is too small, you can use the “Magnifier Mode”. With Okular’s “Thumbnail Panel”, you can browse graphically the part of the document you were looking for. You can even view and verify digital signatures embedded in PDFs, check if they are still valid, and detect any modifications since the document was signed. You can even sign PDFs yourself.
Okular is open source and always free. Try it as an efficient replacement for your PDF viewer / editor. https://okular.kde.org/

Remind Me is a unique reminder service in which you can create reminders just by using your voice. The app will call you on the due date and time and play your own voice reminder. Very cool!
This is an AI-powered App, which helps you convert random spoken thoughts into organized text! It has fast summarization, export to popular apps and a user-friendly interface.
The note taking apps environment is fairly cluttered now. While Evernote remains my personal favourite, Upnote is a simpler, more affordable alternative. It is Notes, Diary and Journal all rolled into one. It has fast, reliable syncing and clean, user-friendly interface, which makes it a strong contender against more complex apps like Notion and Evernote.
Typi is an AI-powered solution that can provide instant answers to your queries. Whether you have a question about a particular topic or need help with a problem, Typi is here to assist you. With Typi, you can type your question anywhere on your device, and let Typi do the rest.
This app acts as an intermediary between your receiving any links by email or WhatsApp or any other app and the actual link where you will land up. When you click on a link and choose this app to open it, it will show a dialog with some information about the link. If it is a shortlink, it will show you the final destination; if it is not a secured site, it will indicate the same; and if it is a scam site, it will also alert you. If the target website has tracking parameters, it will show you the same – in all cases, you have the option to avoid that site!
This is another Notes App with a difference – you can take notes and sync them on all your devices – but the notes will float on your screen above other apps. So, if you have something important to remember, it will always be on the screen for you!
PDFgear helps you read, edit, convert, merge and sign PDF files across devices. It is completely free and you do not even need to signup. Just download it and start using it. The files remain on your system and do not even go out for processing!
Sesame is a powerful universal search on Android. It integrates with your launcher, learns from you, and makes hundreds of personal shortcuts. With Sesame universal search, everything is 1 or 2 taps away!