Boostcamp
Why it's on this list
Boostcamp ships nSuns 5/3/1 as a free program with all four standard layouts built in: 4-day, 5-day, 6-day Squat, and 6-day Deadlift. You pick one, enter your Training Maxes, and the percentage table is filled in for you, no spreadsheet involved.
nSuns is genuinely hard to track by hand, and that is where the app earns its place. A single session can run 17 working sets across two barbell lifts, and the AMRAP top set moves your Training Max every week rather than every month. Boostcamp logs the full 9-set T1 ramp and the T2 work on one screen, records the AMRAP that sets next week's loads, and recalculates the table automatically. The plate calculator handles per-side loading on every set so you are not doing arithmetic between heavy attempts.
Getting programs like nSuns out of shared Reddit spreadsheets and into a real app is the reason Boostcamp was built, so it sits in the library next to 5/3/1, GZCLP, and 11,000+ others. When the aggressive weekly jumps eventually stall and you transition to a 4-week wave, your squat, bench, and deadlift history follows you. Pro adds the Strength Score, a per-muscle volume heatmap, and 20+ exclusive coach programs for $59.99/year ($4.99/month annual).