Common questions
Frequently asked questions
Quick answers in plain language. For the full terms, our policies are linked in the footer.
Subscription & billing
What does my subscription include?
Your chosen supplements shipped monthly with free shipping in the US, plus full access to the Pith Premium App. Tier details and current pricing live on the Bundles page.
Can I cancel or pause anytime?
Yes. Cancel or pause from your account dashboard at any time. Month-to-month, no contracts, no phone calls. The Cancellation Policy spells out exactly what happens to billing, shipments, and app access in each case.
When will I be billed?
Monthly, on the anniversary of your sign-up. We send a reminder email a week before each renewal so there are no surprises, and you can update your payment method anytime from your account.
Can I change my supplements after signing up?
Yes. From your account, you can edit your bundle contents and swap one supplement for another from our catalog. Changes take effect on your next shipment.
What happens if I cancel?
Shipments stop at the end of your current billing period. You can keep the Premium App on its own subscription, or your account reverts to the free tier. Your training data and history are preserved either way.
Products
What's in each supplement?
Every ingredient and dose is listed on the product page. No proprietary blends, no hidden actives. See all products →
Are the supplements safe?
Each formulation uses doses and forms supported by published research. Some ingredients carry specific cautions (thyroid conditions, caffeine sensitivity, certain medications) that are called out on each product page. If you have a health condition or take prescription medication, talk to your healthcare provider before starting, and read our Medical Disclaimer.
Can I take more than one Pith supplement together?
Yes. The catalog is designed for safe stacking, with different mechanisms and no known interactions between Pith products. If you're on other supplements or prescription medications, talk to your healthcare provider before combining.
The app
How does the cognitive training work?
Short daily sessions across multiple cognitive domains. Difficulty adapts to keep you in the zone where learning happens, and the practice spaces out across the week so the work compounds.
When will I see results?
App training data is visible from day one. Supplements vary by ingredient and individual, so each product page describes what to watch for and over what timeline. Pith starts surfacing personal patterns once you've logged a couple of weeks of consistent data.
What does "N-of-1" mean?
Your own dataset, over time. As you train and log supplements, the app surfaces patterns in your individual data. These are observations of your own life, not clinical findings. See our Medical Disclaimer for the boundaries of what we can and can't infer from this kind of data.
Shipping & orders
Is shipping free?
Free on every subscription order in the US. One-time purchases use standard rates calculated at checkout.
Where do you ship?
Currently the United States only.
How do I track my order?
Tracking is emailed to you when your order ships. You can also check status from your account. Processing and delivery timelines are in the Shipping Policy.
Returns & guarantee
What's your guarantee?
A 30-day money-back guarantee on your first order. Email support@trypith.com and we'll handle it. The Refund Policy covers the full terms, including how subsequent orders work.
Don't see your question?
Email support@trypith.com and a real person will get back to you. For full terms, our policies are linked in the footer.