The platform matters less than the data behind the app. But there are real differences, so here is the honest comparison. - iOS: more polished, more expensive. App Store review filters some junk. Clean readers with good search. Does the job. - Android: more variety, more free options, experimental tools show up here first. Quality varies a lot more. - What actually differs: notifications and widgets. Android gives more room for daily nudges and home-screen widgets; iOS wins on just-working sync. - What does not differ: the license text. Apache 2.0 reads the same on both. Judge the app, not the OS: citations, version tracking, freshness. Use the phone you already have. The compliance work is the checklist and the log, and both live above the OS layer. PrivateLLM deploy sets up the licensed model on your own AWS for $50 plus usage.