OffBlock vs Airport CDM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OffBlock
This app combines a smart pilot logbook with a flight crew organizer. It offers features like automated roster imports, flight logging, and crew communication tools. Share your aviation life and manage your professional schedule efficiently.
- Smart flight logging
- Automated roster imports
- Integrated aircraft management
- Calendar with timeline
- Crew communication tools
- Roster sharing
- Data export in official formats
Read full descriptionHide full description
The features you love combined in one app: Pilot Logbook – Created to do the work, with no work for you. • Smart flight logging, optimized for speed • Integrated aircraft management • Digital signature • Precise night time calculation • Powerful statistics, also for type- and class ratings • Data export, PDF reports in official formats (EASA, FAA) • Certificate manager • Extensive airport database, location info & aviation weather • Easy data import from third party apps Flight Crew App – Keep up. Be organized. Stay connected. • Calendar with timeline • Automated roster imports (“Live Updates”) • Push notifications & highlighting of roster changes • Calendar export to your private calendars • Crewlists for upcoming und past flights • Common events • Messaging (private chats & groups) • Flight map – ready to share on social media Roster Sharing – Share your aviation life. With privacy built in. • Connect with friends & colleagues • Check their rosters • Find common off days • Extra: OffBlock Family App for your non-flying family and friends The roster evaluation software „easy dutyplan“ is directly integrated into OffBlock - save money even faster and easier on your tax return! Supported roster systems: • AIMS eCrew • eCrew OCR • CBL WinOps • CrewConnex • CrewWebPlus APM • Jeppesen Crew Access • Leon • Lufthansa Group Open API • NetLine/CrewLink, Crew IDP • Planeación • RAIDO • Sabre CWP • SGT • SkedPlus+ • TOPS FREE 60 day trial on signup.
Airport CDM
This app provides real-time flight departure data and operational milestones for airport stakeholders. It helps optimize flight handling with features like push notifications, de-icing information, and flight progress tracking.
- Live flight data display
- CDM milestones tracking
- De-icing information
- Push notifications for changes
- Flight progress visualization
- Favorite flights marking
Read full descriptionHide full description
OPTIMIZE YOUR FLIGHT HANDLING WITH THE AIRPORT CDM APP The Airport CDM App allows you to keep all important departure data and slots at the airports EDDB (BER), EDDH (HAM), EDDL (DUS), EDDF (FRA), and EDDM (MUC) in real-time. Our goal is to support the operational turn-around process and provide a focused data display in the cockpit. EFFICIENT FLIGHT PLANNING Find all scheduled departures for the next 36 hours in a searchable and filterable list. Mark as many flights as you like and receive current CDM milestones, de-icing information, and other relevant data. Visual highlights and push notifications keep you informed about changes in the process flow. EXCLUSIVE FOR AIRPORT STAKEHOLDERS Our app is exclusively designed for airlines, ground handlers, ground traffic services, and other stakeholders involved in the turn-around process. We offer tailored solutions for the challenges of airport operations. ATTRACTIVE OFFERS FOR PASSENGERS Passengers can benefit from attractive online offers from the respective airports. Get information on flight status, gate details, and much more directly from the airport websites. For BER/ Berlin Brandenburg Airport, we recommend the "BER Airport" app available in the popular app stores. KEY FEATURES AT A GLANCE • Live display of flight data such as scheduled time, destination airport, callsign, flight number, aircraft type, registration, and flight status. • Track flight progress with current CDM milestones like EOBT, CTOT, TOBT, and TSAT. • Keep track of SID, gate, parking position, runway, and taxi time. • Receive de-icing information such as Deicing Request, ECZT, EDIT, and de-icing position. • Mark flights as favorites for quick access. • Follow a TSAT countdown and color highlights for a quick status overview. • Stay up-to-date with push notifications and in-app alerts. • Choose between local device time or coordinated world time (UTC) for time indications. • Utilize the airport-specific info layer for emergency information. Optimize your flight handling today with the Airport CDM App. • OUR CDM PROCESS PARTNERS • Airport companies • Airlines • Handling agents (ground handling agents) • Ground handling companies • Air traffic control • European Air Traffic Flow Management (EUROCONTROL NM) • Are you a CDM process partner interested in participating in the Airport CDM App? Please let us know: airport-cdm@berlin-airport.de IMPORTANT NOTES The use of the Airport CDM App is only permitted after confirmation of the terms of use. Please review the terms of use and privacy policy before downloading this app. https://corporate.berlin-airport.de/en/geschaeftspartner/airlines-handling/airport-cdm/a-cdm-app/nutzungsbedingungen.html FEEDBACK We continuously strive to improve the Airport CDM App and provide high-quality service. We welcome your feedback in the form of criticism, suggestions, and praise. We are attentive listeners! Contact: airport-cdm@berlin-airport.de FURTHER INFORMATION For detailed information on the Airport Collaborative Decision Making Process (A-CDM), glossaries, and contacts, please visit: http://cdm.berlin-airport.de/ https://www.hamburg-airport.de/de/A-CDM https://cdm.frankfurt-airport.com/content/fraport-company-cdm/en.html http://acdm-germany.de
Screenshots
Verdict
The clearest difference is rating: OffBlock at 4.7 against Airport CDM's 3.0. OffBlock also leads on ratings volume (102 vs 2) and review sentiment (48% vs 34%). Airport CDM's advantage is in-app purchases (none vs 4). On price, ads and device support 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
Both are free to download. OffBlock sells 4 in-app purchases, starting at $2.99 per month. Airport CDM asks for nothing beyond the download.
OffBlock holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: OffBlock has 102 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 48% of OffBlock's written reviews are positive against 34% of Airport CDM's.
OffBlock ships an update every 2 months, Airport CDM every 4 months. The most recent releases landed on September 24, 2026 and June 9, 2026 respectively.
| Parameter | OffBlock | Airport CDM |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (102 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 48.3% of reviews — better | 34.4% of reviews |
| Number of ratings | 102 — better | 2 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 275 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | OffBlock GmbH | Flughafen Berlin Brandenburg GmbH |
Customer experience
OffBlock
Airport CDM
Bugs and requests
OffBlock
Reported bugs
14 issues- Roster import not working
- App is unusable
- Roster autodownload and manual download doesn't work
- Stby duties are not visible
- Data lost
Show 9 moreShow fewer
- App crashes
- Dates bugging
- Calendar export not working
- Synchronization issues with Offblock-Family
- Import roster stuck at 0%
- Total flight hours not visible without payment
- Statistics data lost after forced migration
- All old data gone after update
- Remark option not reintroduced
Requested features
6 requests- Export in calendar view for printing
- Calendar export to be fixed
- More content in logbook for general aviation
- Reintroduce 'remark' option
- Desktop version available again
Show 1 moreShow fewer
- Integration of other airlines for connecting with friends outside own airline
Airport CDM
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OffBlock
- OffBlock Pro (1 month)$2.991 Month
- OffBlock Pro+ (1 month)$6.991 Month
- OffBlock Pro (1 year)$29.991 Year
Show 1 moreShow fewer
- OffBlock Pro+ (1 year)$69.991 Year
Airport CDM
No in-app purchases









