6.8.0
Jan 12, 2026 · seen Sep 29, 2026
0-20 Pullups Back Trainer is a health & fitness app by Zen Labs Fitness with 100,000+ downloads (about 239K estimated). +89 installs in the last 7 days. Rated 4.7 from 3.6K ratings. Released Mar 3, 2016. Install growth, rank history, SDKs and ad networks.
From the store listing: “◎ Join the millions completing the Zen Challenge Series! ◎ 0 to 20 Pull-ups in 6 weeks! ◎ Featured on Glamour Magazine, Yahoo!’s Appolicious, Popsugar Fitness, Apple’s “What’s Hot”, Apple’s “New & Noteworthy”, and doctor recommended on healthTap! Are you ready for the 20 Pull-Ups Challenge? Train your upper body/core…”