Solo AI Assistant

Solo is a private AI assistant that runs entirely on your phone. There is no cloud, no account, and no chat server. Your messages stay on your device. Why Solo is different • Truly on-device: the language model runs locally using llama.cpp. Once the model file is downloaded on first launch, the app works fully offline — even in airplane mode. • No backend for chat: your prompts and responses never travel to a server. Nothing is uploaded, nothing is logged remotely. • No account required: open the app and start chatting. No sign-up, no email, no phone number. • Your data, your device: chat history is stored only in this app's private storage. You can clear it any time from Settings. What you can do with Solo • Ask questions, brainstorm, draft emails, summarise text, get explanations. • Use it on flights, on the subway, in low-signal areas — it doesn't need a connection. • Stop a response mid-stream when you've seen enough. • Long-press any message to copy it. • Manage installed models and free up space from Settings. How it works On first launch, Solo downloads a compact open-source language model (~400 MB, Qwen2.5-0.5B-Instruct) from Hugging Face. After that, the model lives on your device and runs locally on every chat. No further network calls are made for inference. Performance notes • Optimised for modern phones. Older or low-RAM devices may respond more slowly. • Running a language model is computationally intensive — your phone may warm up during long sessions. Privacy at a glance • Chat content: stays on device. Never sent anywhere. • Anonymous usage analytics: limited app-event analytics (screen views, model load events) are collected to improve reliability. No message content is ever included. • Push notifications: optional, used only for occasional product updates if you grant permission. Permissions • Internet: needed once to download the model and to deliver optional push notifications. • Storage: needed to save the downloaded model on your device. Open source models, open standards Solo uses widely-reviewed, open-weights models distributed under permissive licenses. You can manage and remove models at any time from the Settings screen. Made with care by Aftab Ali — an independent developer who believes your conversations belong to you, not to a server farm.