📈Last 7 days+2 installs — 78% slower than the week before (+9) · 0/day since Oct 7
🏆Among Books & Reference apps bottom 21% by installs gained this week (301 peers growing)
🛠Updatesdormant · updated 424 days ago
Installs since launch
+11 installs
since Oct 7
Update history
1.04Sep 13, 2025 · seen Oct 23, 2026
Improvements to app performance
Only the current version so far — new entries appear as the app ships updates.
Harrington's Chemical Guide is a books & reference app by Harrington Industrial Plastics, LLC with 1,000+ downloads (about 1.1K estimated). +2 installs in the last 7 days. Released Dec 23, 2019. Install growth, rank history, SDKs and ad networks.
From the store listing: “Harrington Chemical Compatibility Guide for Piping Materials”
