LeanLog: Stack Tracker
Research log for your stack
About
This app helps users meticulously log personal research protocols, focusing on peptides and GLP-1. It offers features like a daily dashboard, compound tracking, and a reconstitution calculator, all while prioritizing on-device privacy and security. Advanced features are available through a subscription.
What's New in LeanLog
1.2
May 8, 2026
1.4.0 — Built for sharing, dialed for daily • Tap SHARE on Progress for watermarked progress cards (TikTok, IG, Reddit ready) • RECAP — auto-generated weekly highlight reel • Before/After photo cards stamped with weight delta • Send your stack to a friend in one tap — they open the link, app pre-fills the protocol • Smarter weekly streak with hot-streak flame at 4+ weeks • Side-effect heatmap on every protocol — see which dose makes you sick • Edit protocols anytime — dose history stays linked • Backfill missed pins — bulk-log historical doses in one calendar • Dose chips that adapt to your compound (tirz, sema, BPC, retatrutide, etc.) • Site rotation nudges so you don't pin the same spot twice • Notes on every dose log • Cleaner paywall + reminder onboarding
MoreSubscription plans
Pro Monthly
Unlimited compounds, reminders, and the Pro toolkit.
In-App Purchases
$79.99
Pro Lifetime
One-time unlock for full LeanLog Pro. Yours forever.
Developer apps
FAQ
What is LeanLog used for?
LeanLog is a personal logging tool designed for users researching peptides and GLP-1 protocols. It allows you to track compounds, doses, frequencies, and other relevant data for your personal research.
Is LeanLog free to use?
LeanLog offers a free version that allows tracking of one active compound. Additional features, such as unlimited compounds and advanced tracking tools, are available through a Pro subscription.
Does LeanLog provide medical advice?
No, LeanLog is strictly a personal logging tool and does not provide medical advice, diagnosis, treatment, or dose recommendations. It is not a medical device, and users should always consult a qualified medical professional for health decisions.
How does LeanLog handle user privacy?
LeanLog is engineered for privacy, with all data stored locally on your device. There are no accounts to create, no cloud storage, and no tracking or analytics on your personal data, ensuring your research log remains yours.
What are the Pro features in LeanLog?
LeanLog Pro unlocks unlimited compounds, an injection site map for visual rotation, a private progress photo log, two-way weight sync with Apple Health, and unlimited log retention with export capabilities.
What subscription options are available for LeanLog Pro?
LeanLog Pro is available as a monthly subscription ($4.99/month with a 3-day free trial), an annual subscription ($29.99/year with a 3-day free trial), or a one-time lifetime purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the current period ends.
Can LeanLog sync with Apple Health?
Yes, LeanLog Pro offers Apple Health sync for weight tracking. You can sync weight data in either direction and import up to 12 months of past entries with a single tap.
How often is LeanLog updated?
The latest version of LeanLog is 1.2, which was last updated on May 8, 2026. Updates typically focus on improving features, enhancing privacy, and ensuring stability for the user.