https://www.desidime.com/discussions/free-pdf-editing-app-suggestions-needed?page=1#post_9692349
amit_ag
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go for sejda pdf editor..after 2-3 edits in short time, switch aeroplane mode on/off then it will again work fine
You can also try opening it in office 365 app/ms word app. It works like a charm unless or until the document is secured by creator for editing.
Pdfgear - windows desktop app
WPS Office
If you have a computer, open that watermarked pdf in notepad++. Search for the water mark and remove it in the notepad++ and save. I used to do this for some apps like CamScanner.
On computer, you can Nitro pdf trial version for 1 week.
👇🏼 You can try this. Its free and lets you edit/fill covert to word/excel/ppt on mobile. Its light on your system as well.
https://play.google.com/store/apps/details?id=c...
Edit : It's no longer free😬. Free trial allowed for 3 days.
Is Pdfgear safe?