📈Last 7 days+42 installs — 11% faster than the week before (+38) · 4/day since Oct 6
🏆Among Auto & Vehicles appstop 11% by installs gained this week (140 peers growing)
🛠Updatesquiet · updated 35 days ago · every ~53 days (2 updates tracked)
Installs since launch
+118 installs
since Oct 6
Update history
1.1.0Oct 7, 2026 · seen Oct 18, 2026
New look: cleaner home with quick tools and example codes. Calmer ads. Bug fixes.
1.0.0Aug 15, 2026 · seen Oct 6, 2026
First release. Offline J1939 and J1587 truck fault code lookup: search by SPN, FMI or code, plain-language causes and what to check first. Works with no signal. Available in 41 languages.
Truck Fault Codes: J1939 SPN is an auto & vehicles app by Zorya Tech Studio with 100+ downloads (about 192 estimated). +42 installs in the last 7 days. Released Aug 15, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “Offline J1939 & J1587 truck error codes: meaning, causes and what to check.”
