Comparison

J1939OBD vs Pro Boost

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

Head to head
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

Pro Boost

Features
Read full description

Application for adjusting oil and displaying RPM CRP BOOST MAP SPEED values ​​of the Pro Boost box, a new product from ECU=SHOP. It can adjust the oil supply value with a mobile phone, connect to the box wirelessly, and has 4 modes to choose from, with an AI Mode system that automatically changes the operating mode. It is very advanced with technology that is included in a worthwhile price. Guaranteed to increase horsepower by 50-90 units

Screenshots

J1939OBD4 screens
Pro Boost4 screens

Verdict

The call

The clearest difference is in-app purchases: Pro Boost at none against J1939OBD's 1. Pro Boost 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 Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

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

Scorecard2 real differences Β· 4 level
J1939OBD versus Pro Boost: the parameters behind the verdict, then further details
ParameterJ1939OBDPro Boost
PriceFreeFree
Update frequencyEvery 41 monthsEvery 5 weeks β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.112.0 β€” better
Further details β€” not scored
Size14 MB85 MB
Age rating4+17+
DeveloperS.KoepgeECU=SHOP

In-app purchases

1 purchases

J1939OBD

One-time1
  • Get full access for 1939OBD$3.99
None

Pro Boost

No in-app purchases

Questions

Is J1939OBD free?
J1939OBD is free to download, with in-app purchases available.
Is Pro Boost free?
Pro Boost is free to download, with no in-app purchases.
Do J1939OBD or Pro Boost have ads?
Neither J1939OBD nor Pro Boost shows ads.
Which is updated more often, J1939OBD or Pro Boost?
J1939OBD ships an update every 41 months, and Pro Boost every 5 weeks. Most recently, J1939OBD was updated on September 18, 2026 and Pro Boost on October 5, 2026.

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