Sequa
About Sequa

Built for the people medicine keeps letting down.

Sequa exists for everyone who has sat in a waiting room trying to remember when it started, who has been told their data might be used against them, and who has quietly decided they need to understand their own body better than anyone else does.

Our mission is to give every person complete, private intelligence about their own health, without compromise.

Health data is the most personal data that exists. It can determine whether you get insurance coverage, whether an employer takes a risk on you, whether a researcher can build a profile on you. Most apps treat this as background noise. We treat it as the central design problem.

Sequa was built on a simple principle: your health data should live on your device, be processed on your device, and leave your device only when you choose. Not because we promise to be careful with it, but because we've built it so that getting to it is architecturally impossible.

Why we built this

Because tracking your health shouldn't require trusting a stranger.

Health tracking apps exist on a spectrum of broken promises. Some sell your data. Some share it with insurers. Most store it on servers you have no control over, governed by privacy policies written to protect the company, not you.

We built Sequa for people managing chronic pain, running complex protocols, monitoring conditions the medical system doesn't fully understand. They deserve an app that is unconditionally on their side.

Sequa privacy
The complexity problem

Most health apps assume
you have one simple thing.

You might have fibromyalgia and be running a GLP-1 protocol. You might have chronic migraines and be tracking testosterone levels, sleep HRV, and barometric pressure simultaneously.

Existing apps handle one of those things, badly. Sequa handles all of them, with 113 conditions, 219 compounds, 189 evidence-graded supplements, and 42 blood markers in one coherent system.

Sequa manage stack
The intelligence gap

Your body has been telling
you something. You just couldn't hear it.

The trigger that precedes your flare by 38 hours. The supplement that's quietly working. The sleep pattern that's not a coincidence. These correlations exist in your data, but no human brain can hold enough variables to find them.

Sequa's on-device pattern engine does it automatically, surfacing insights with confidence scores. Every calculation happens on your phone.

Sequa pattern intelligence
The long game

Six months of data becomes
your body's manual.

Not just what happened today, but what your data says about you over months. Weekly summaries. Visit prep that makes every doctor's appointment count. A body's manual that gets more accurate every week.

The longer you track, the more Sequa knows about you. And unlike everywhere else, that knowledge stays where it belongs, with you.

Sequa body's manual

What we believe.

Six principles that shape every decision, from architecture to copy to the order of items on a screen.

Privacy is architecture, not policy.
A privacy policy is a promise. Architecture is a fact. We've built Sequa so that your health data never touches our infrastructure, not because we've pledged to be careful, but because there's nothing to be careful with.
No judgement. Ever.
Whether it's a prescribed medication, a research compound, or something your doctor hasn't heard of. Sequa treats you as an adult making informed decisions about your own health.
Precision over simplification.
Oversimplified health apps are useless to people with complex conditions. Sequa is designed to be as precise as you need, clinical vocabulary, detailed logging, real data.
Data should make you smarter, not anxious.
Insights come with confidence scores. Patterns come with context. We never surface a correlation without explaining its strength.
Doctors are partners, not gatekeepers.
Sequa is designed to make clinical relationships better. Visit prep reports give your doctor the full picture quickly, so you spend your 12 minutes on what matters.
You own your data. Full stop.
Sequa generates no revenue from your health data. No pharma partnerships, no advertising integrations, no data brokers. The only business model is a subscription you pay for.

Who built Sequa.

Sequa is built by a small, independent team based in the UK and US. We don't have a PR department, a growth team, or a venture capital board telling us to monetise your data.

We have a product, a set of principles, and a clear view of who we're building for. People who live with conditions the medical system doesn't fully understand. People running protocols that most apps refuse to acknowledge. People who are tired of being told their data isn't really theirs.

That's who we get up for every morning.

What Sequa promises you.

Not marketing copy. Architectural commitments and firm policies we hold ourselves to.

Stored on your device only
Your health data never leaves your iPhone unless you export it. No Sequa servers hold it.
Never sold. Never shared.
Your data is not sold to data brokers, shared with insurers, or used for advertising. Not now. Not ever.
Invisible to insurers
No insurance company or employer can access data that doesn't exist on a server.
Zero judgement
Track whatever you track. We don't audit your protocols or second-guess your choices.
Delete means delete
Delete the app and your data is gone permanently. There is no backup on our end.
Subscription only
The only business model is one you pay for. No hidden data revenue. No advertising.

Ready to take your
health data seriously?

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