Research tool · not medical advice

Simple, honest pricing

One free plan, one paid plan. Go paid for unlimited tracking — then just choose how you want to pay.

Free

Start your research log with no credit card.

$0forever
  • Up to 3 active cycles
  • Up to 3 active inventory items
  • Unlimited dose logging
  • Free calculators + peptide library
  • Purity test entry (link a report URL)
  • Check-ins with trend charts
  • Data export + delete (GDPR)
Get started free
Everything unlocked

Paid

Unlimited tracking + every feature. Choose how you pay.

$79.99per year

$6.67/mo, billed yearly

7-day free trial — cancel before it ends and pay nothing.

  • Unlimited cycles + inventory
  • Unlimited dose logging + check-ins
  • Purity test tracking with file storage
  • Reconstitution + IU calculators
  • Custom CSV exports
  • Email reports to your provider
  • Data export + delete (GDPR)
Start 7-day free trial

Same features on every plan — you're only choosing how to pay.

Research use only.

PepStash is a logging and calculation tool. It does not provide medical advice, and nothing on this website is intended to diagnose, treat, cure, or prevent any disease. Consult a licensed physician before making any decisions about your health.

Frequently asked

Can I switch plans later?
Yes. Upgrade or downgrade at any time from Settings → Billing. Prorated credits apply automatically.
What's the difference between free and paid?
Free covers up to 3 active cycles and 3 active inventory items (archiving frees a slot). Paid removes the limits and adds purity-report file storage, check-in logging, custom CSV exports, and sharing your log with your provider.
What's the difference between Monthly, Annual, and Lifetime?
Only the price. All three paid tiers include the exact same features — you're just choosing how to pay. Annual saves 33% vs monthly, and Lifetime is a one-time payment with no recurring billing.
Is lifetime really lifetime?
Yes — one payment, access forever. Cycles, inventory, calculators, and purity tests are all unmetered.
Do you offer refunds?
30-day money-back on all plans. Contact support from any page footer.
Pricing · PepStash