Since 2025, iPhones with Apple Intelligence carry a capable language model on the device. For an app like Alpy this changes the AI trade entirely: prose quality without a cloud bill, an API key, or a single byte of your data leaving the phone.
Alpy uses on-device AI in two places: the morning report (a few sentences turning today’s measured conditions into plain language) and “The Day, Written” (an end-of-day paragraph in your debrief).
Both run under the same contract we’d give a careful human editor: rephrase the telemetry, never invent. The model receives only measured facts — temperatures, fresh snow, your run times, your PRs, your cadence trend — with explicit instructions to add nothing. Facts that don’t exist for the day are omitted from the prompt entirely, so the model can’t even be tempted to mention airtime on a day without airs. Small on-device models hallucinate more readily than frontier cloud models, which is why we don’t ask this one for world knowledge — no “best runs at Verbier” from a model that might make them up.
Every AI-written paragraph in Alpy carries a chip saying who wrote it: ON-DEVICE AI when Apple’s model is available, AUTO SUMMARY when an older phone falls back to our deterministic template. Same information either way; different voice; always disclosed. AI output is never a safety source — bulletins and weather stay verbatim from their official providers.
That’s the whole architecture: AI as a writer, instruments as the source of truth, and nothing leaving the phone. The 2026 version of “no cloud” isn’t anti-AI — it’s AI that moved in with you.
Alpy is free, with all AI on-device. Privacy policy.