Privacy
2026
Updated · September 11, 2026
Twospeed is operated by Stone Giant Studio, LLC. This is what Twospeed keeps, what it is used for, and what is never done with it. It is written to be read rather than to be agreed to, because a policy nobody can get through protects nobody.
What we keepand why we have it
Your email address and password, so the account is yours and nobody else’s. What you log: the lifts, weights, reps and runs you record, the notes you write about a session, and when each one happened. Your settings: units, schedule, the places you train and what equipment is in them. And, if you connect a device or another training service, the workout and activity data it sends us.
What it is foryour training, and nothing else
Everything above is used for one purpose: working out what your next session should be, and showing you what you have already done. Health and activity data never leaves that purpose. It is not used to build a profile of you, and it is not used to advertise anything to you — there is no advertising here, and there is no plan for any.
What we never dono exceptions we hide
We do not sell your data. We do not rent it, trade it, or share it with advertisers, data brokers, or anyone assembling a picture of who you are. We do not hand your health or activity data to another company for that company’s own purposes. The only exceptions are the ones the law leaves us: a valid legal demand we cannot refuse, or a genuine need to keep someone from being harmed. If we ever receive such a demand we will tell you, unless we are forbidden from doing so.
Who else handles itand on what terms
Running the service takes a few companies. Vercel hosts the app. Neon holds the PostgreSQL database your training record lives in. Resend delivers account mail such as sign-in and password resets. Each processes your data on our instructions, for us, and for nothing else; none of them is permitted to use it for their own purposes. If that list changes, this page changes with it.
Text messagesnone, and no plan for any
Twospeed does not text you. The app never asks for your phone number, so there is none to keep, and there is no marketing by text.
Connected deviceswatches, and what they send
When you connect a watch or another training service, we ask for the narrowest set of data that lets us plan your training and reconcile it against what you actually did — workouts, activities, and the measurements attached to them. We do not ask for data we have no use for. You can disconnect at any time, and when you do we stop requesting data and delete what that connection gave us, apart from anything already folded into a session you logged here. Garmin support is being built now; nothing is connected until you connect it.
Cookies and what your browser keepsone cookie, and no trackers
Twospeed sets one cookie: the one that keeps you signed in. There is no advertising cookie, no analytics cookie, and no third-party tracker on any page here. The app also keeps a little data in your browser’s own storage so it works without a signal — sets you logged in a basement, a note you were part-way through writing, and your display settings. That stays on your device until it is sent as the sets and notes you already meant to send us, and clearing your browser data clears it.
How it is protectedand where it sits
Everything travels over an encrypted connection. Passwords are stored as salted hashes rather than as passwords, so we cannot read yours and neither can anyone who walks off with a copy of the database. Access to live data is limited to the people who need it to keep the service running. Our providers operate in more than one country and your data may be handled in any of them; the commitments on this page apply to it wherever it sits.
How long we keep itas long as it is yours
A training record is only useful if it is long, so yours stays for as long as your account does. Ask us to close the account and we delete your training data from the service; copies sitting in routine backups go as those backups age out. We do not keep a shadow copy after that.
What you can ask foryour account, your call
Ask for a copy of everything we hold about you, and we will send it. Ask us to correct something and we will correct it. Ask us to delete it and we will delete it. Write to privacy@twospeed.app and a person will answer.
Not medical advicea plan, not a diagnosis
Twospeed plans training. It is not a medical device, it does not diagnose or treat anything, and it does not monitor you for a condition. Talk to a doctor before you start, and again if something hurts in a way that training should not.
Childrenthis is an adult’s app
Twospeed is built for adults and is not offered to anyone under sixteen. We do not knowingly keep data from a child; if we learn we have, we delete it.
Changesand how you hear about them
If this policy changes, the date under the heading changes with it. Anything that materially alters what happens to your data gets an email before it takes effect, not after.
Contacta person, not a form
Questions, requests, or a complaint about how your data has been handled: privacy@twospeed.app.