A private health record · closed beta
You set the targets.
It just keeps the record.
Corpus writes down what you ate, took, lifted, and weighed — and shows it against numbers you chose. No streaks to protect. No badges. Nothing turns red because you had a bad Tuesday.
Invite only while we test · Free for beta testers
Existing testers sign in at corpusmark.app
The idea
Most tracking apps want you anxious. This one doesn't.
Streaks, rings, and readiness scores are engagement mechanics wearing a lab coat. Corpus is built the other way round: it records faithfully, shows you the shape of the last few weeks, and stays quiet until you ask it something.
There are two halves to it, and they are deliberately different jobs. Mark is where you write things down — fast, in a few taps, or just by saying what happened. Ledger is where you read it back — the trends, the ranges, the thing you print out before an appointment. Capturing and reviewing want different screens, so they get them.
Your numbers
Targets you set yourself
Protein, fiber, water, weight, blood pressure, whatever you decide to track. Pick your own figures — or the ones your doctor gave you. Nothing is imposed and nothing is hidden behind a quiz.
Low pressure
No streaks, no shame
Skip three days and nothing breaks. There's no counter to reset, no notification asking where you've been. The log picks up wherever you do.
Ask first
A coach that waits
The coaching layer answers when you open it. It offers options sized to how you actually say you feel today, and it takes "not today" for an answer.
Yours
Your data, plainly
One account, one record, yours to delete outright whenever you want. We don't sell it, we don't build an ad profile from it, and we'll tell you exactly what any integration reads before you turn it on.
Shipping now · in beta
What's actually in the app today
This is the honest inventory — the things testers use daily. Some of it is rough. All of it works.
Food & fluids
- Log a single item or a whole meal
- Nutrition lookup against USDA data
- Running protein / fiber / calorie totals
- Water by the ounce
- Today and yesterday, itemized
Supplements & medications
- Build your stack once
- Daily checklist grouped by timing
- Micronutrients tallied from what you took
- Medication list with full sig detail
- Check off as you go
Body & vitals
- Weight, BMI, body-fat and scale metrics
- Change from baseline
- Blood pressure log with categories
- Morning / evening BP split
- Continuous glucose summaries
Movement
- Log sessions as they happen
- Guided routines for home equipment
- Routines matched to the gear you own
- Capacity-matched options for today
Anything else
- Custom trackers — track what you want
- Values and notes over time
- Series view for any tracker
- Simple task list
Goals
- One primary goal, stated plainly
- Your targets attached to it
- Change direction without starting over
- Dashboard reads against your own numbers
Roadmap · nothing below has shipped
Where this is going
We're publishing the plan rather than the press release. Each item below is a commitment to try, not a delivery date.
An app that runs on your phone
A real on-device app that holds the day locally, so logging is instant and works without a signal. It batches your changes and syncs them up when you're done — rather than a round trip for every glass of water.
Wearables and health monitors
Read steps, heart rate, sleep, and blood-oxygen from the band or watch you already wear, through Apple Health and Health Connect first, then direct device pairing. You choose what it reads. It never writes back without asking.
Possibly our own hardware
We're evaluating a Corpus-branded band or watch, so the sensor and the record are designed to the same standard instead of bolted together. Early days — we're talking to manufacturers, not taking orders.
Coaching you can steer
The coaching layer moves from "asks you nothing" to "asks only what it needs," with the tone, frequency, and bluntness set by you — including all the way off.
Plain statement of status: Corpus is pre-release software under active development by a very small team. Features can change or disappear. Data loss during beta is unlikely but possible — keep your own records of anything that matters clinically. Corpus does not diagnose, treat, or advise. Talk to your doctor before changing medication, diet, or training.
Membership
Free while it's in beta. Honest about what comes after.
Everyone in the current test group uses Corpus free, and keeps that for the length of the beta. When paid plans open, you'll see the price before anything is charged, and you'll be asked — not auto-enrolled.
Beta tester
$0 / while testing
The only plan open right now, and only by invite.
- Everything in the app today
- Direct line to the person building it
- Your feedback actually changes things
- Delete your account and everything in it, whenever
Personal
TBD / month
Planned. Pricing not set. Not for sale yet.
- The full record and all trackers
- Device and wearable sync
- Coaching layer
- Long-term history and export
Household
TBD / month
Planned. Several people, separate private records.
- Multiple members, one bill
- Each record stays private to its owner
- Shared shopping and prep lists
- Optional shared goals
Billing and subscriptions will be handled by Helcim. Card details are entered on Helcim's hosted checkout and never touch Corpus's servers. Checkout is disabled for the whole beta — the buttons above are wired to the integration and deliberately switched off.
Access
Request an invite
We're adding testers slowly and on purpose — enough people to find the bugs, few enough to answer everyone. Tell us a little about what you'd track and we'll be in touch when a slot opens.
We'll only email you about your invite.
No list, no newsletter, no sharing your address.
Questions
Before you ask
Is Corpus available yet?
Not publicly. It's in closed beta with a small invited group. There's no download link, no app store listing, and no way to sign up without an invite.
What are Mark and Ledger?
Two halves of the same app, not two products. Mark is for writing things down; Ledger is for reading them back. One account, one record, one sign-in — corpusledger.app is just a shortcut that opens straight into the reporting side.
Does it work with my watch or fitness band?
Not yet. Device sync is planned, starting with Apple Health and Health Connect so most mainstream watches and bands come along for free, then direct pairing for specific devices. Tell us what you wear on the invite form — it genuinely affects what we build first.
Will it tell me off for missing my targets?
No. Missing a target renders as a shorter bar and nothing else. There is no streak, no penalty, and no notification designed to make you feel behind.
Who sets the targets?
You do. If your doctor gave you numbers, put those in. If you want to track something without any target at all, you can do that too.
What happens to my data?
It stays in your account, we don't sell it, and we don't use it to build advertising profiles. You can delete the whole account and everything in it at any time — that destroys your encryption key too, so even copies sitting in a backup become unreadable. The privacy policy says exactly what is stored and who it goes to.
Is this medical advice?
No, and it can't be. Corpus is a record-keeping tool. It doesn't diagnose anything, it isn't a regulated medical device, and it's no substitute for your doctor.