Hi r/SideProject! We built OffKin, an Android app with four tools that run entirely on the phone, even in airplane mode: Translator: text and voice in 15 languages, plus a two-way conversation mode where each person speaks their own language AI assistant: ask by text or voice. The model runs on the phone, so questions never go to a server Document converter: convert PDF, DOCX and text files, merge and split PDFs, recognize text and translate documents QR codes and barcodes: scan, create, and connect to Wi-Fi with a code Why: we wanted these tools without an account, without sending text and files to a cloud service, and working when there is no connection. The trade-offs we made: - Languages and the AI model download once (the light model is about 2.6 GB, the accurate one about 3.7 GB) - The AI needs at least 4 GB of RAM, and it's a compact model, so it doesn't know recent news and can make mistakes - Android 11+ only for now, no iPhone version yet - Closed source, but you can check the offline claim by turning on airplane mode Pricing: Basic is free forever, the first month has all Pro features with no card, and Pro is a paid upgrade. We launched on Product Hunt last week. We'd really like feedback from other builders: which of the four tools would you actually use, and what would stop you from trying it? Google Play: https://play.google.com/store/apps/details?id=app.offkin&referrer=utm_source%3Dreddit Product Hunt: https://www.producthunt.com/products/offkin   submitted by   /u/Potential-Inside-824 [link]   [comments]