VAG DPF lite is the free version of the application VAG DPF that show you the most important data related to the DPF particulate filter and its regeneration phases using an ELM327 Bluetooth/WIFI adapter. With this free app you can statically view 3 parameters related to the particulate filter status. This app doesn't use standard OBD2 commands as almost all other apps it uses directly CAN commands specific of car model and this is the reason why it doesn't work with every car; due to the use of CAN commands the app needs al least a decent ELM327 adapter (see note below); some users reports correct app working with a 10-15 euro adapter.

VAG DPF forum: https://www.applagapp.com/forum/
VAG DPF F.A.Q.: https://www.applagapp.com/forum/viewtopic.php?f=9&t=319

ATTENTION!! This app works only with VAG cars (Audi Volkswagen Seat Skoda Porsche) that are equipped with engines listed below; the full compatibility isn't guaranteed for engines not listed so if you buy the app please consider that some or all functions may not work properly.
This app doesn't work with other brand's car due to a different diagnostic protocol.

DETA CRBC CFHDCUNA CFFB CFWA(*) CLHA CXXB CAYC (partially working on Passat 3C MY10) CAHA (beta requires verification) CXHA DTTC (not MY2022 and subsequent) CDUC
Engines tested successfully by users:
CFGB(*) CFGC CJCA CRMB CUPA CUSA CXFA CAYB CAYD CRLB CUTA CFHC CAGA(*) CSHA CJCD DFSB CLAB DFLA DCXA CFCA CGLC CFJB CFHA CRUA DDYA DFFA CRKB DCYA DFCA CUUB CGLB CUAA CUSB CAPA(*) DFGA DFSF DFHA CNHA DGTA DGTE(*) CCWA DGDA DLUB CJCB DGTD CDUD CSUD DEUA DAUA DJGA CXXA DFEA DBGC CAYA CRTD DGDB CUUA DAVA CKFC CRCA CGQB(*) DDDA DCZA CAAC DNAA(*) CAAB DTUA(§) CJCC CXFA CRTD DTPA DTRC
(*) = partial support or depending on SW version
(§) = only for 11-bit init protocol
IMPORTANT some of the engines above may be incompatible it depends on the engine software version so use the VAG DPF FREE app to check your engine before buy!!!!

Core functions of the application:
- Display of 3 parameters related to the DPF filter: soot mass accumulation in the filter regeneration duration km traveled since last regeneration
- Manual update of the parameters

Some words about ELM327 adapters:
- OBDLink LX: recommended expensive but fast and reliable (I used it for the app development)
- Carista: recommended affordable price but very reliable (I use it for debug and daily scans)
- Vgate iCar 2 Bluetooth : recommended same as Carista
- Konnwei kw 903 : recommended same as Carista
- China cloned adapter: not recommended unreliable you can randomly find decent adapters or fake adapters with unpredictable results

29-bit init protocol: Currently the app doesn't support the 29-bit protocol engines but it's available the BETA engine group 97 that can be used for test more details here:
https://www.applagapp.com/forum/viewtopic.php?f=4&t=20036&p=26560