looking for open source or tracker free file shredder app.
if anyone using it please share.
Try Extirpater on Fdroid:
It won't allow to secure erase a single file but it does secure erase free space so the traces of the deleted file (s) will be gone.
Volen By the way, a factory reset on GrapheneOS would achieve the same result.
Weaver also provides reliable wiping of data since the secure element can reliably wipe a Weaver slot. Deleting a profile will wipe the corresponding Weaver slot and a factory reset of the device wipes all of the Weaver slots.
Volen yes will use extirpater untill single file shredder isnt found, hard to bel we dont have such imp utility on fdroid