Comparison

J1939OBD vs PoBD

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

J1939OBD

Diagnose Tool für Motoren

ELM327 OBD app(adBlue only)

Free

📊 Productivity

No ratingsView app →

About

J1939OBD

Features

Read full description

A diagnostic app for industrial and commercial vehicle engines using the J1939 CAN protocol. The app supports the following functions: - Display the active error codes - Display the passive error codes - Delete the error codes - Display of engine measured values - Information about the status DPF - Information about the SCR system - Information about fuel consumption - Engine information - Terminal mode To connect to the engine you need an EML327 compatible Wifi OBD interface as of V1.4 and a connection cable from the diagnostic connector to OBD. Various manufacturers offer corresponding cables, as well as a well-known engine manufacturer from Cologne, who distributes a corresponding adapter cable via his dealer network. Visit my homepage for further informations. An EML327 Wifi interface is offered on known Internet platforms.

About

PoBD

Features

Read full description

Peugeot/Citroen Diesel (Urea System) OBD App for iOS Features: Divided into 8 Key Areas (Detailed ECU sensor information (130+)) 1. Read and Delete Fault Codes 2. Powertrain Information 3. Engine Lubrication Information 4. Fuel System Information 5. Exhaust System Information 1, 2, 3 (DPF(FAP) Related) 6. DeNOx System Information 1, 2 (Urea System Details) 7. Cooling/Air Conditioning System Information 8. Air Intake Information 1, 2 Supported ECUs: Supports 4 ECU Types -CMM_MD1CS003_Euro6 (CMM_MD1CS003_Euro6_2, CMM_MD1CS003_Euro6_3, CMM_MD1CS003_Euro6_4) -EDC17C60 -DCM62 -CMM DCM71 Compatibility: Supports vehicles produced before January 2024 (only those with urea systems). Wireless OBD Scanner Requirements: -Supports Bluetooth 4.0 or higher. -Verified with iCar Pro BT4.0 (for ELM327). For a detailed description of the app, please visit: https://elite508.tistory.com/

Screenshots

J1939OBD4 screens

PoBD4 screens

Verdict

The call

The clearest difference is in-app purchases: PoBD at none against J1939OBD's 1. PoBD also leads on update cadence (every 5 weeks vs every 41 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. J1939OBD sells 1 one-off in-app purchase. PoBD asks for nothing beyond the download.

UpkeepUpdate frequency

J1939OBD ships an update every 41 months, PoBD every 5 weeks. The most recent releases landed on September 18, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 4 level

J1939OBD versus PoBD: the parameters behind the verdict, then further details
Parameter	J1939OBD	PoBD
Price	Free	Free
Update frequency	Every 41 months	Every 5 weeks — better
Ads	No	No
In-app purchases	Yes	No — better
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	12.1 — better	13.0
Further details — not scored
Size	14 MB	37 MB
Age rating	4+	4+
Developer	S.Koepge	JAE YONG SEO

In-app purchases

1 purchases

J1939OBD

One-time1

Get full access for 1939OBD$3.99

None

PoBD

No in-app purchases

Questions

Is J1939OBD free?

J1939OBD is free to download, with in-app purchases available.

Is PoBD free?

PoBD is free to download, with no in-app purchases.

Do J1939OBD or PoBD have ads?

Neither J1939OBD nor PoBD shows ads.

Which is updated more often, J1939OBD or PoBD?

J1939OBD ships an update every 41 months, and PoBD every 5 weeks. Most recently, J1939OBD was updated on September 18, 2026 and PoBD on October 7, 2026.