SynergyA Peptide Tracker alternative that checks your whole stack
If you are comparing Peptide Tracker alternatives, here is the honest version: what Peptide Tracker states it does, what Synergy adds, and what Peptide Tracker has that Synergy does not. Every fact below was read from the public App Store listings on 2026-09-16.
We make Synergy. "Not stated" means the Peptide Tracker listing does not mention the feature, not that the app cannot do it. Corrections: [email protected].
What Peptide Tracker does, in its own words
Peptide Tracker (Flat Six Labs) describes a free, paywall-free app for peptide protocols: multi-compound stacks with schedules, vial and supply inventory, reconstitution and syringe-unit calculators, estimated plasma levels, injection-site tracking, Apple Health sync, a compound library, an AI chat, and a question-and-answer community. It is on iPhone and Android.
What Synergy adds
Supplements, peptides, and GLP-1s in one cabinet
Everything you take is logged in one place — the weekly shot, the peptides, and the supplements — instead of the shot in one app and the rest in a notes file.
Interaction checks across the whole stack
Synergy checks every item against every other and shows the pairs with documented interactions — synergies to lean into, cautions to watch — each with a plain-language, educational summary. Never a dose.
Scan a label to add it
Point the camera at a supplement label and the item is added, free on every plan.
Side effects, narrowed down
Reacting to something while taking four things? The side-effect analyzer works through the timeline and produces a record you can hand to a clinician.
What Peptide Tracker has that Synergy does not
A fully free model with no subscription, an estimated plasma-level curve and half-life calculator, and an Android version. Synergy has a free tier with a Pro subscription for unlimited cabinet items, cycles and per-day dosing, the AI coach, cloud backup, and trends; it does not draw plasma curves; and it is iPhone-only today.
Side by side
| What the app does | Synergy | Peptide Tracker |
|---|---|---|
| Logs peptides (BPC-157, TB-500, GHK-Cu, CJC-1295…) | Yes | Yes |
| Logs GLP-1 medications | Yes | Yes |
| Logs supplements as a category | Yes | Not stated (custom compounds only) |
| Checks interactions between every item in the stack | Yes | Not stated |
| Scans a supplement label to add it | Yes, free | Not stated |
| Reconstitution and syringe-unit math on numbers you enter | Yes | Yes |
| Vial inventory (mixed and unmixed, remaining volume) | Yes | Yes |
| Estimated plasma-level curve and half-life calculator | No | Yes |
| Side-effect log with a narrow-down-the-cause flow | Yes | Not stated |
| Community | Structured reviews and discussion | Question-and-answer forum |
| AI assistant | Coach (Synergy Pro) | AI chat |
| Apple Health connection | Yes | Yes |
| Price model | Free tier; Synergy Pro subscription | Fully free; optional founding-member purchase and tips |
| Platform | iPhone | iPhone and Android |
Verified 2026-09-16 against the US App Store listing for Peptide Tracker (Flat Six Labs LLC, v2.19.0) and Peptide GLP Supplement Synergy (PSSYN LLC, v1.0.2). Android availability per peptidetracker.ai. See the full comparison.