Ask anything about your sleep, HRV, recovery or training. Metrya turns raw HealthKit numbers into clear, personal answers — and the model behind them can now live on the iPhone itself. No API key, no account, nothing on the wire. It answers with Airplane Mode on.
HRV up 12% vs baseline. Good day to train hard.
Every other health app has already answered the question for you: their servers, their model, their margin. Metrya asks it out loud — which brain do you want, and where should it live? Tap once and a real language model downloads to your phone. After that it answers with no API key, no account, no provider, and nothing on the wire. Airplane Mode included.
A downloaded model is the middle rung, and the one most people should stop at: it reasons in a way Apple's built-in model cannot, holds weeks of your nights and sessions in a single answer, and does it without your data leaving the device.
Built into iOS — nothing to install, nothing to set up. It reads your numbers, describes a trend and follows a short instruction. Reworked in 2.11.9: it now answers workout debriefs, stress reads and night reads that it used to refuse outright.
Download one once and it runs on the iPhone itself — no key, no account, no server, no provider. It holds weeks of your history in one answer, reads a plate of food if your phone has the memory, and works with the network switched off entirely.
Claude, GPT and Gemini with an API key from your own account. The strongest reasoning, the largest context, and answers in seconds. Questions go from this phone straight to that provider — never through a Metrya server, because there isn't one.
Open-weight Qwen 3.5, Apache-2.0, mirrored by us and checked byte-for-byte before first use.
The balanced one. Fast enough to hold a conversation with, deep enough for the long read of a week of nights or a training block.
The best answers on this list, and the slowest. Twice the context of the 2B, for the questions you would rather not send anywhere at all.
Granting Apple Health has never meant granting AI. In 2.11.9 the reverse holds too — and every part of it is now visible rather than taken on trust.
The Advisor and Insights carry a permanent note naming where your health data goes and what is in it — the metrics, the time range, and what is never included: your name, your email, Apple Health identifiers, your device id, your location.
Switch to a provider you have not used before and Metrya shows you the actual request first: which metrics, over what dates, what the instructions say, and the whole thing in full if you expand it. Agreeing for one provider never agrees for another.
Turn the advisor off entirely, stop scheduled reports, remove an API key, or delete every AI chat, memory and generated report on this iPhone. None of it touches your Apple Health permissions.
A prompt leaves only when you send it, or when a report you scheduled is due — and schedules re-check your permission at the moment they run, not when you set them up. On a new install the advisor starts off.
Also fixed in 2.11.9: the Advisor used to write its answers, and sometimes the health data behind them, into the device log. Prompts, health payloads and completions are no longer written anywhere — not to logs, not to us, not to anyone. Metrya has no server of its own that could receive them, and no fallback API key: an empty key now blocks a cloud request rather than quietly finding another one. Read the privacy policy →
Metrya on Apple Watch is a body-state companion, not a shrunken dashboard: your phone keeps the history and the AI, your wrist owns now. Reserve, recovery, your latest stress estimate, sleep, nutrition, caffeine, cold-plunge timing and a weather-aware Heads Up — all read on-device, the moment you raise your arm.
Check kcal, protein, carbs and fat against your daily targets with live progress bars — straight from your wrist.
Start and time a cold plunge from your wrist — it syncs to Apple Health when you next open the iPhone app. Sauna still starts from the phone.
HRV, resting heart rate and wrist temperature — each compared against your own rolling baseline the moment you wake.
Pin live Reserve, Recovery or heart rate to your watch face. The Watch talks only to your phone — no health data ever leaves your devices.
Here's an actual AI Advisor exchange — and everything that goes into it. This one was answered by a model running on the phone itself.
The flagship tools up top. Then everything else, grouped by what your iPhone works out on its own and what actually needs a model behind it.
Most of Metrya never calls a model at all — the scores are arithmetic your iPhone does on its own. Only the features in the second tab need a model, and you choose which one: Apple Intelligence, a model you downloaded onto the phone, or your own key. The first two send nothing anywhere and cost nothing to run.
Nothing in the second tab requires a key any more. Apple Intelligence is the default on a new install and runs on your iPhone for free. A downloaded Qwen 3.5 runs on your iPhone for free too, and holds far more of your history in one answer. Your own Claude / OpenAI / Gemini key is the third option, not the price of entry — it buys the strongest reasoning and the largest context, billed to you by that provider at cost. Reading a meal photo is the one thing Apple Intelligence cannot do; that needs a key, or a downloaded model with the photo part installed on an 8 GB iPhone. Everything in the first tab never calls a model at all. Compare the three ways to run it →
Every score in Metrya is true this morning and gone tomorrow. Reports are the artefact that survives the day: what happened over a week, what your body composition has actually been doing, and what your BMI is hiding. All computed on your iPhone, all free.
Pro adds the AI summary and the one action to take, an AI-written lever per metric, history beyond 90 days with your own projected pace, the what-if and target planners, and a Markdown export for a coach or doctor — written on your phone and handed to the share sheet. Nothing is uploaded.
Each week's own mean is drawn over its days — so a good week and a volatile week don't read the same. Days without a reading stay blank and are left out of the mean, never counted as zero.
Metrya reads the HRV samples your Apple Watch already takes and turns them into an on-device estimate of autonomic strain, scored against your personal range. It is not a mood meter, not continuous, and not a diagnosis — and it says so.
The dashed stretch is a gap in your watch's HRV sampling — Metrya leaves it blank instead of inventing a reading.
A single 0–100 number that starts each morning from your overnight recovery, then drains and recharges hour by hour as you move through your day — like the battery icon you already understand.
Add a goal photo (or describe it, or pick a silhouette preset) and a current photo. Metrya reads both against your scale, sleep, and training data to map exactly what stands between you and the physique you're working for.
Metrya Pro surfaces science-backed aging signals inside the Bio Age screen. No extra sensors, no AI call, no server round-trip — just on-device math over your Apple Health history.
No account, no subscription, no data upload.
Most health AI apps charge $10–30 a month, quietly pocketing the difference. Metrya has no margin to pocket — there is no Metrya server in the path at all. Two of the three ways to run the advisor cost nothing beyond Pro; the third bills you directly, at the provider's own rate.
The default on a new install. Nothing to download, nothing to sign up for, nothing sent anywhere. Good for the everyday questions; short memory, and no meal photos.
$0 · nothing to set upQwen 3.5, downloaded once from Settings → AI Model. Weeks of your history in one answer, meal photos on an 8 GB phone, and it works with the network off. Beta, and slower than the cloud.
$0 · no account, no keyThe frontier models on a key you generate yourself. Fastest and strongest, months of context — and the only option where your data leaves the phone, under your own contract with that provider.
Pennies a question · at costThree steps, about three minutes, no technical background needed.
No subscriptions, no recurring billing. Pay once for Pro, own it forever.
Items marked · needs a model run on whichever advisor model you pick — Apple Intelligence or a downloaded on-device model (both free, both on your iPhone, nothing sent anywhere), or your own Claude / OpenAI / Gemini key, billed to you by that provider at cost, typically under $2/month. The model never changes the price of Pro. Everything else is arithmetic your iPhone does and costs nothing to run. Compare the three →
Whoop, Bevel, Athlytic, Sonar and Livity all read the same handful of signals your Apple Watch already records — and most of them bill you every year for it, on their servers, with their AI. Metrya charges once, and the AI can run on the phone in your hand.
Whoop's hardware is excellent — but if there's already an Apple Watch on your wrist, you're paying $199 a year to measure the same heart twice.
Read the comparison →Polished and broad, with its own AI coach. The trade: your health history lives on their servers, and the AI is theirs, on their terms, at their margin.
Read the comparison →The fairest fight of the three — Athlytic is cheap and privacy-respecting. It also stops at scores, where Metrya lets you actually ask why.
Read the comparison →Competitor pricing checked against public pricing pages and App Store listings in July 2026 and may since have changed. All trademarks belong to their respective owners, who are not affiliated with Metrya.
Everything you need to know before downloading.
Practical explainers on Apple Health, HRV, recovery, and privacy-first AI — written for people who want clearer signals, not more noise.
Recovery without the subscription — how to judge Apple Watch alternatives on readiness, energy, privacy, and multi-year cost.
Read article →Why soft HRV mornings aren’t always overtraining — and how to read environment next to Apple Health.
Read article →Three on-device lenses under biological age — which system is aging faster, and what to fix first.
Read article →Readiness in one place — when to push and when to recover, using your Apple Health data.
Read article →Here's what we're building next. If you bought Pro, all of it is included — no extra charge, ever.
The whole app in your language — screens, notifications and Watch included, with the AI answering in it too.
Faster replies, a lighter memory footprint, and more downloadable models to choose from — including smaller ones for iPhones that cannot hold Qwen 3.5 today.
Months of daily history kept on your phone, so seasonality and long arcs finally have something to sit on.
The Weekly Readout over longer arcs. They already sit in the Reports hub as dated "not yet" rows, so you can see where they'll appear.
A roomier dashboard for reviewing your full history on a bigger screen.
Download Metrya free, connect Apple Health, and get answers grounded in your own numbers — today.
Download on App Store