SynergyA Shotsy alternative that checks your whole stack
Synergy is a Shotsy alternative that logs peptides, GLP-1 medications, and supplements in one place and checks them against each other. Below: what Shotsy states it does, what Synergy adds, and what Shotsy has that Synergy does not. Every fact is from the app's own App Store listing, verified on the date shown.
We make Synergy. "Not stated" means the Shotsy listing does not mention the feature, not that the app cannot do it. Corrections: support@pepsupsynergy.com.
What Shotsy does, in its own words
Shotsy describes itself as a GLP-1 tracker: it logs doses of GLP-1 medications by brand and generic name (weekly shots and the daily pill), reminders, side effects, weight, calories, protein, and water, imports those readings from Apple Health, shows an estimated medication-level chart, and exports a PDF. It is for iPhone.
What Synergy adds
Made for use, not for show
Log it. See where it went. See what it touches.
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 Shotsy has that Synergy does not
An estimated medication-level chart drawn from population half-life data, and calorie, protein, and water tracking imported from Apple Health. Synergy does not draw medication-level curves and does not count calories; it connects Apple Health for weight and dietary nutrition data that feed nutrient coverage.
Side by side
| What the app does | Synergy | Shotsy |
|---|---|---|
| Logs GLP-1 medications (weekly shots and daily pills) | Yes | Yes |
| Logs supplements as tracked items | Yes | Not stated |
| Logs peptides beyond GLP-1s (BPC-157, TB-500, GHK-Cu…) | Yes | Not stated |
| 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 | Not stated |
| Side-effect log | Yes, with a narrow-down-the-cause flow | Yes |
| Estimated medication-level chart | No | Yes |
| Imports calories, protein, and water from Apple Health | Weight and dietary data via Apple Health | Yes |
| Community with structured reviews | Yes | Not stated |
| Data export on the free tier | Yes, always | PDF export |
| Platform | iPhone | iPhone |
Verified 2026-09-16 against the US App Store listing for Shotsy (Shotsy, v3.3.9) and Peptide GLP Supplement Synergy (PSSYN LLC, v1.0.2). See the full comparison.
More head-to-head pages
Peptide Tracker · PeptidePal · Pep AI · PeptIQ · MeAgain · Glapp · All apps compared · GLP-1 tracker · Peptide tracker