Export your history from your current app as CSV and import it in Delta: Data → Import. Delta sniffs the format automatically; major lifting-app export formats import directly, sets, warmups, and dates intact. Your old PRs are first-class citizens the moment the import finishes.
Fill the blank template in any spreadsheet: one row per set for strength, one row per session for cardio. Dates are YYYY-MM-DD, warmup is yes or blank, and cardio rows use minutes and/or distance with reps left empty.
| date | exercise | weight_lb | reps | warmup | minutes | distance_mi | |
|---|---|---|---|---|---|---|---|
| 1 | 2026-01-05 | Back Squat | 135 | 5 | yes | ||
| 2 | 2026-01-05 | Back Squat | 225 | 5 | |||
| 3 | 2026-01-07 | Run | 32 | 3.1 |
delta-template.csv · a few hundred bytes · works in Numbers, Excel, or Sheets
Prefer kilograms? Rename the columns weight_kg and distance_km; Delta reads the header and converts.
Downloading files on a phone is nobody's favorite hobby, so honestly, the easiest path is to fill the template on a computer and send the finished file over:
Delta's import reads the file from wherever it lands; nothing is uploaded anywhere, because there is no server to upload to.
Your training history exports as one CSV: Data → Export. Every workout, every set, your check-ins, notes and gear, in plain text. Re-importing that file restores all of it. The file is yours to keep, graph, or leave in a drawer.
What the CSV does not carry: the programs, routines and training plans you built, and the saved shape of your GPS routes. Programs and plans export on their own, as their own files, and a routine shares as one too. So a complete archive is the CSV plus those, rather than the CSV alone. Said plainly because “everything” is a promise, and a promise about your own data is the one thing this app cannot be loose about.