LogiCO2 vs DDD Connect
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
LogiCO2
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The LogiCO2 Sniffer is a product that communicates CO2 measurement values from LogiCO2βs CO2 Safety Systems, to Smartphones. The LogiCO2 Sniffer is compatible to the Mk7, Mk9 and Mk10 CO2 sensor. The LogiCO2 Sniffer can be connected to a CO2 Safety System that has a Central Unit or has βstand aloneβ CO2 sensors. It is connected through the βredβ RJ45 cable that both powers and communicates with the LogiCO2 Sniffer. The LogiCO2 Sniffer can monitor CO2 Safety Systems with up to eight sensors. Install the LogiCO2 Sniffer App. and you are ready to receive the measurements from the Sniffer. The LogiCO2 Sniffer is a beacon that broadcasts the measurements to all smartphones within range of the Bluetooth signal that currently are running the Sniffer-App. You need to scan for sensor signals from the Sniffer and have the App running. Have the Bluetooth enabled on your smartphone. The LogiCO2 Sniffer is a one way signal device, in other words the sniffers function can not compromise the functionality of the LogiCO2 Safety System. You can only read out the measurements. The LogiCO2 Sniffer also logs the last two weeks of measured values for added safety. The last two weeks measurements are stored. Both the CO2 concentration (STEL) and the TWA value (PEL β Time Weighted Average) are stored every 15 minutes. To read out the logger in the App. you must have access to the Sniffer device.
DDD Connect
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DDD Connect is the professional app for downloading and managing tachograph data directly from your smartphone. It connects via Bluetooth to DDDKey devices and downloads driver cards or tachograph memory in just a few taps β wherever you are, no cables or PC required. β BLUETOOTH DOWNLOAD, NO HASSLE β Select the download type (driver card, tachograph memory, or both), choose the time period and data sections, and let DDD Connect handle the rest. The DDD file is ready in your archive when it's done. βDRIVING TIMES ALWAYS UNDER CONTROLβ With DDD Connect you always have driver driving times at your fingertips. β COMPLETE ARCHIVE β All downloaded files are stored securely on your device. Browse, share, or export your DDD files at any time. No external servers, no account required. β DRIVER & VEHICLE REGISTRY β The app automatically links each download to the corresponding driver or vehicle. Full download history, driver card details, and tachograph calibration information are always at your fingertips. β SMART DEADLINE TRACKER β DDD Connect automatically monitors all compliance deadlines: β’ Next mandatory download dates for drivers and vehicles β’ Driver card expiry and renewal β’ Tachograph calibration deadlines Receive push notifications before it's too late and see an upcoming deadline summary right on the home screen. β SECURITY & PRIVACY β Your data never leaves your device. Protect app access with Face ID, Touch ID, or PIN. β MULTILINGUAL β Italian, English, German, French, Spanish. DDD Connect is developed by SIAK SISTEMI, specialists in road transport compliance.
Screenshots
Verdict
The clearest difference is update cadence: DDD Connect at weekly against LogiCO2's every 7 months. On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
LogiCO2 ships an update every 7 months, DDD Connect weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | LogiCO2 | DDD Connect |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 7 months | Weekly β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 β better | 15.1 |
| Further details β not scored | ||
| Size | 30 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Logico2 International AB | SIAK SISTEMI S.R.L. |
In-app purchases
LogiCO2
No in-app purchases
DDD Connect
No in-app purchases
Questions
Is LogiCO2 free?
Is DDD Connect free?
Do LogiCO2 or DDD Connect have ads?
Which is updated more often, LogiCO2 or DDD Connect?
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