ASO checker
Paste your App Store and Google Play listing and get an ASO score, every rule it breaks — repeated keywords, promo claims, stuffing, byte limits — and a fixed 100-byte keyword field.
Open the toolScreenshot size checker
Drop in a screenshot and see which App Store and Google Play slots accept it — exact sizes, Play’s 2:1 rule, format and the alpha channel that gets uploads rejected.
Open the toolPrivacy policy generator
Answer a few questions and get the privacy policy both stores require, ready to copy, download, or host at a permanent URL.
Open the toolAlpha channel remover
Both stores refuse a PNG with an alpha channel, even one where nothing is transparent. Flatten yours onto any background and get back a true 24-bit PNG.
Open the toolPlay Data safety generator
Google Play’s Data safety form asks about the SDKs you linked, not the code you wrote. Answer a few questions and get every row — collected, shared, required, purposes — with the reason it is there.
Open the toolWhy these five
Each one is a job that blocks a submission and that nobody enjoys. A store refuses a screenshot without telling you which rule it broke; it refuses a listing with no privacy policy URL at all; and Google Play will not take an app until its Data safety declaration is filled in. The fastest way to lose an afternoon is to find any of that out at upload time.
The checker answers the first question against the stores’ own published rules: exact dimensions per slot, Google Play’s 320–3840 px bounds and its 2:1 cap, the PNG/JPEG requirement, and the alpha channel that causes most rejections. The remover fixes that last one — and it is worth its own page, because the obvious fix does not work: re-saving a PNG through a browser canvas writes the alpha channel straight back. The policy generator produces a document covering what both stores ask you to disclose, and the Data safety generator turns the same answers into Play’s declaration, including the rows your SDKs put there without you writing a line of code.
They are free because they are the parts of a store submission that should not cost anything. If you want the rest — a full screenshot set from one design, AI listing copy in 30+ languages, a landing page and hosted legal pages — that is what Edok Studio does, and the free plan exports without a watermark.