SynergyA Shotsy alternative that checks your whole stack
If you are comparing Shotsy alternatives, here is the honest version: what Shotsy states it does, what Synergy adds, and what Shotsy 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 Shotsy listing does not mention the feature, not that the app cannot do it. Corrections: [email protected].
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
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.