Know BEFORE
you inject.
Real data on peptide side effects, benefits, and what to expect week by week. FDA clinical data plus community experiences — so you know if what you're feeling is normal.
"Is this normal?"
Every peptide user asks the same question. The nausea on week 1 of tirzepatide. The vivid dreams on BPC-157. The sulfur burps nobody warned you about. You search Reddit, scroll through contradicting anecdotes, and still don't know if what you're experiencing is typical or a red flag.
PepEffect answers that question with structured data — not guesswork.
Five features. One clear purpose.
Week-by-Week Timeline
See how side effects and benefits change over time for every compound. Know what's coming before it hits.
Clinical + Community Data
FDA prescribing information alongside real community-reported effects. Two layers of truth, clearly labeled.
Daily Check-ins
Log your experience and compare to community benchmarks. Track severity trends. Export to CSV.
Compare Tool
Side-by-side comparison of any two peptides — effects, benefits, and timelines in one view.
50+ Real Stories
Published experiences from clinical trials, patient interviews, and medical case reports. Not anonymous Reddit posts.
Privacy First
Your data never leaves your device. No accounts. No tracking. No analytics. No ads. Period.
The peptides people actually use
One price. Yours forever.
No subscriptions. No recurring charges. No "premium tiers."
Free
Research and learn
$0
- ✓ Full peptide library with write-ups
- ✓ FDA-documented side effects
- ✓ Top 3 community effects
- ✓ 1 story per compound
- ✓ Week 1 timeline preview
Premium
The full experience
$9.99
one-time purchase
- ✓ Everything in Free
- ✓ Full week-by-week timelines
- ✓ All community effects + trends
- ✓ Daily check-ins + benchmarking
- ✓ Side-by-side compare tool
- ✓ 50+ real published stories
- ✓ CSV export
Your data stays on your device
PepEffect has zero analytics, zero tracking SDKs, zero data collection. Your check-ins, your protocol, your notes — stored locally on your iPhone and nowhere else. We don't even have servers.
PepEffect provides general wellness information for educational purposes only. It does not provide medical advice, diagnosis, or treatment recommendations. All community data is user-reported and not clinically validated. Always consult a qualified healthcare provider before starting, changing, or stopping any peptide protocol or medication.