Feature Deep-Dive
AI that rates your specific protocol. Not peptides in general.
A general AI chatbot can tell you about BPC-157. Stack Score tells you how BPC-157 interacts with everything else you are running, where your protocol is strong, and where it has gaps.
No other peptide app does this.
Synergy
How well compounds work together
Redundancy
Duplicate mechanisms
Side effect risk
Interaction risk score
Evidence quality
Research backing per compound
Cost efficiency
Protocol cost vs benefit
Complexity
Protocol manageability score
How Stack Score works
Open any active protocol in Protocol and tap Stack Score. The AI analyzes the specific compounds you are running and returns a radar chart with scores across six dimensions. Each score is explained: why this protocol scores high on synergy, why the evidence quality score is lower, what the redundancy flag means in practice.
The analysis is not generic. It knows your compounds, not just peptides in general. A BPC-157 and TB-500 stack scores differently from a BPC-157, Ipamorelin, and CJC-1295 stack. The AI accounts for the interaction between your specific compounds.
Stack Score updates when you add or remove compounds. Use it to compare protocol variations before you commit. Two stacks side by side on the radar chart show you exactly what changed across all six dimensions.
The Interaction Checker
Stack Score's companion feature flags specific compound pairs. Protocol's Interaction Checker covers the 30 most common pairings in peptide protocols and reports on each one: complementary mechanisms, timing considerations, additive side effect risks, and combinations that affect how you should dose each compound.
Running Ipamorelin and CJC-1295 together? The Interaction Checker explains the synergistic GHRH and GHRP mechanism and why pre-sleep timing matters for both. Running BPC-157 and TB-500? It explains the complementary injury recovery mechanisms and why the combination is a standard pairing in that context.
The flags are not warnings for their own sake. They are the kind of information a well-read protocol designer would already know, surfaced inside the app where you need it.
AI built into six points in the workflow
Stack Score is one of six AI touchpoints in Protocol. The Research Assistant is available in Inventory, the Catalog, at the Add Item step, inside Protocol Details, in the Check-in Coach after daily logs, and in the Progress view. Each one knows your actual stack.
Inventory
Ask about any compound in your inventory — dosing, reconstitution, cycling.
Catalog
Research before you add. The AI is inside each compound profile.
Add Item
Adding a compound to a protocol — the AI answers questions before you commit.
Protocol Details
Stack Score and Interaction Checker live here.
Check-in Coach
Analyzes your logged data after every daily check-in.
Progress
AI context on your trends, streaks, and what the data is showing.
FAQ
What is Protocol's Stack Score?+
Stack Score is Protocol's AI analysis of your active peptide protocol. It rates your stack across six dimensions on a radar chart: synergy (how well compounds work together), redundancy (whether compounds duplicate each other's effects), side effect risk (potential adverse interactions), evidence quality (strength of research supporting each compound), cost efficiency, and complexity. The radar chart shows all six scores visually so you can see where your protocol is strong and where it has gaps.
How is Stack Score different from a general AI chatbot?+
Stack Score analyzes your actual protocol — the specific compounds you are running, the doses you have logged, and the goals you have set. A general AI chatbot answers questions about peptides in general. Stack Score knows what you reconstituted, what you drew, and what your protocol is trying to accomplish. The analysis is contextual to your specific stack, not generic compound information.
What is the Interaction Checker in Protocol?+
Protocol's Interaction Checker covers the 30 most common compound pairs used in peptide protocols and flags potential interactions: duplicate mechanisms, timing conflicts, additive side effect risks, or synergistic combinations that affect dosing. It is built into the protocol detail view and updates as you add or remove compounds from your stack.
Which peptide apps have AI stack analysis?+
Protocol is the only peptide tracker app with AI stack analysis in the form of Stack Score. No other app in the category — not DoseTrack, PeptIQ, Peptify, PepTracker, LynkDose, or Shotlee — rates protocol combinations across multiple dimensions or provides an interaction checker for compound pairs.
Is Stack Score free?+
Stack Score is part of Protocol's Pro tier. Every new Protocol install receives 14 days of Pro automatically with no account or credit card required, so you can use Stack Score from the moment you download the app. After the trial, Pro is $9.99 per month, $59.99 per year, or $149.99 as a one-time lifetime purchase.
Know your stack. Not just your compounds.
14 days of Pro free at install. No account required.
