Guides
Every app here exists because something on a phone is more awkward than it should be. These are the write-ups of those problems: what is actually going on, what you can do with what you already have, and where an app of ours helps. Each one names its limits.
How to open an HTML file on Android
Three ways to open a local .html file on a phone, and the one thing that decides whether the page renders properly.
How to remove the background from a photo on Android
Cutting the subject out is the easy half. The format you export to is what decides whether the transparency survives.
How to save a WhatsApp voice message on Android
Where the voice notes folder is, why the files are tied to the app, and three ways to keep a copy that lasts.
How to get an RSS feed for a YouTube channel
Every public channel has one. The address is predictable, and the only hard part is getting the channel ID out of an @handle.
Where downloaded files go on Android
One folder holds almost everything, and the confusion is about the saved files that never go near it.
How to scan a QR code on Android
The camera you already have covers most of it. Here is the part it does not, and how to tell a safe code from a bad one.
How to scan a document to PDF on Android
Your phone has a real document scanner built in, and it is not in the camera app. Where it is, and why the result beats a photo.
How to free up space on Android
Where the space actually went, and why deleting a hundred photos barely moves the number.
How to lock your photo gallery on Android
A locked folder and an app lock solve opposite problems. Picking the wrong one leaves the photos in the grid.
How to trim a video on Android
Cutting the ends needs no app. Cutting a piece out of the middle is a different job, and that is where quality comes in.
How to set a repeating reminder on Android
Setting it is the easy half. Whether it actually goes off is a battery setting most instructions never mention.
How to check app permissions on Android
The permission manager answers half the question. The stronger permissions are on a second list it never mentions.
Some of these have a matching tool that runs in your browser. See the web tools