Strong Exporter

Export your workout data from the Strong iOS/Android app via their unofficial backend API.

Setup

1. Find the backend URL by proxying the Strong app (e.g. with mitmproxy — open the app, trigger a sync, grab the host from the request list).
2. Create a .env file:

STRONG_BACKEND=https://the-url-you-found
STRONG_USER=your@email.com
STRONG_PASS=yourpassword

3. Install dependencies:

pnpm install

Usage

vp run start export [options]

Options

Option	Alias	Description	Default
--username	-u	Strong account email (or STRONG_USER)
--password	-p	Strong account password (or STRONG_PASS)	prompts
--from		Start date, inclusive (e.g. 2026-01-01)	30 days ago
--to		End date, inclusive (e.g. 2026-02-17)	today
--format		json or csv	json
--output	-o	Output file path	exports/strong-export-YYYY-MM-DD.json

Examples

# Last 30 days (default)
vp run start export

# Specific date range
vp run start export --from 2026-01-01 --to 2026-01-31

# Export as CSV
vp run start export --format csv

# Custom output path
vp run start export --output my-workouts.json

Output

Exports are saved to exports/ by default. Null fields are omitted. Weights are always in kg.

JSON

{
  "exportedAt": "2026-02-17T15:00:00.000Z",
  "totalWorkouts": 12,
  "workouts": [
    {
      "id": "b9627caf-...",
      "name": "Push Day",
      "startDate": "2026-02-15T10:00:00.000Z",
      "endDate": "2026-02-15T11:15:00.000Z",
      "exercises": [
        {
          "name": "Bench Press (Barbell)",
          "completedSets": [
            { "weightKg": 80, "reps": 5 },
            { "weightKg": 85, "reps": 3 }
          ],
          "skippedSets": []
        }
      ]
    }
  ]
}

CSV

date,workoutName,exerciseName,setNumber,weightKg,reps,rpe,distance,duration,status
2026-02-15T10:00:00.000Z,"Push Day","Bench Press (Barbell)",1,80,5,,,,completed

Background

Strong syncs workout data to a backend server. There’s no official API, but the endpoints can be reverse-engineered from the app traffic. Originally based on tolik518/strong-api-workout-fetch.