United States Parachute Association > Rating Holders and S&TAs > Resources > Logbook Apps
  1. First-Time & Student Skydivers
  2. Experienced Skydivers
  3. Rating Holders and S&TAs
  4. Drop Zone Management
  5. About USPA


Digital Logbook Apps

The following apps have been reviewed by USPA staff and deemed in compliance with SIM 3-1 C logging guidance. Jumps tracked with these apps can be used when verifying licenses and ratings qualifications as well as skill requirements.

Note: Instructors, Examiners, S&TAs, or USPA Board members who are verifying logs towards license and rating qualifications must still check that the jumps were signed by another licensed skydiver, a pilot, or a USPA National or FAI Judge who witnessed the jump. Jumps to meet skill requirements must be signed by a USPA Instructor, Examiner, S&TA, or a member of the USPA Board of Directors.

This list is maintained by USPA Department of Technology for informational purposes only to assist instructors, examiners, and S&TAs in their responsibility to accept digital logbooks while still complying with SIM 3-1 C. USPA does not specifically endorse any of the apps or associated products. There may be other apps that meet logging guidance that are not listed here.



Boogie makes logging easier, more legitimate, and more fun.

  • Never lose your logbook with unlimited cloud storage.
  • Record skydives using only your phone.
  • Analyze data when you land.
  • See your skydiving season in a single summary.
  • Add flair to your logbook with skydive artwork.

Version 4.1.1 approved March 2020

Paralog Mobile


Paralog Mobile is a mobile skydiving logbook. It supports syncronizing your jumps with jumplog.net. You never have to carry a paper logbook to the dropzone, just use Paralog Mobile.


  • View jump list
  • View jump details
  • View jump profile
  • Sign jump
  • Create jump from existing one (specific or last jump)
  • View signature
  • View summary
  • Lists of dropzones, aircrafts, equipments and jump types with summed up jump amount
  • Change the settings of your jumplog.net account

Paralog Mobile works with data from Paralog skydiving logbook synced to jumplog.net. You need an account on jumplog.net to use this app.

Version 2.4.00 for Android and 2.5.00 for iOs approved February 2021

FDS Logbook



  • Use in any web browser on computers or mobile devices
  • Log skydives, wind tunnel sessions, and BASE jumps
  • Automatically log jumps using FDS altimeters and the FDS Altis app
  • Displays all logged data from FDS altimeters
  • Add friends or students and view their recent activity
  • Add students to keep track of their progress and edit their logbook
  • Tag friends or students in jumps or sessions
  • Jumps or sessions occurring contemporaneously are automatically displayed as linked jumps or sessions in one’s own logbook when a friend or student is tagged
  • Add unlimited YouTube and Facebook videos or Instagram pictures to any logbook entry
  • Keep track of your skydiving, tunnel and BASE statistics

Version 1.0 approved June 2023

Skydive LogBook

  • A Simple and Clean Logbook App for Skydivers
  • Ratings, Membership and Repack Date Tracker
  • Enter and Store SkyDive / Wind Tunnel Logs
  • Swipe To Re-Arrange Log Entry Fields
  • Export Your Logbook (PDF) via Email
  • Dropbox Backup and CSV Upload
  • Location Based DZ Selection
  • USPA SIM 3-1 Compliant
  • Support for Signature

Version 2.3.4 approved March 2020



Squifly – #1 Skydive and Tunnel App

  • Ultimate Logbook: Record skydives and tunnel sessions, see statistics, set goals.
  • Discover Skydiving World: Dropzone and Tunnel Maps, plan adventures.
  • Plan Your Skydiving Season: Stay up-to-date on events, from camps to boogies.
  • Improve Your Skills: Read articles from top experts in the field.
  • More Features: Share photos and videos, calculate your wingload, and more.

Version 1.4.3 approved February 2023

Ultimate Logbook


Ultimate Logbook has been developed by extreme sports enthusiasts who traveled the world for years and know how challenging it is to carry all your logbooks with you, constantly trying to keep them up to date and in good nick. We designed this app to have all logbooks in one place, allow for fast data entry and at the same time keeping track of licenses, gear use, experience, skills and much more.


  • Create multiple logbooks (for different activities) and give them a name, color and background image
  • Optionally enter log count and time from previous logbook
  • Jump number is given dynamically, so if you ever forget to log something no problem. When you add an older jump, numbers are adjusted accordingly. No more scribbled entries or tipex.
  • Signing log entries via signature or QR code from other app users
  • Add participants via QR code from other app users
  • Quick access bubbles of the most used altitudes, locations, aircraft types etc., to allow fast entries
  • Log entries can be marked as work and/or training
  • Manage your licenses with the option to attach photos of front and back; licenses can then be used to sign other app users log entries via QR code
  • Manage your gear and automatically keep track of jumps on each item
  • Create gear templates (collection of components like container, main, reserve)
  • Export lookbook as csv file

Version 0.2306.23.8 approved July 2023



Automated skydiving logbook.
Jump with the confidence that your progress won’t get left behind. Let your phone track your jump automatically. Our innovative jump tracking technology turns your phone into a GPS tracker to accurately record every jump, every time. You will get comprehensive statistics and 3D visualisation right after the jump.

Version 1.7.1 approved March 2020



Tobu is the ultimate skydiving logbook and tracker app. At Tobu, we understand that skydiving is an expensive and time-limited sport, and we want to help skydivers make the most of every jump. Tobu is a fast, efficient, and informative tool that brings awareness and accountability to skydivers, helping them progress safely through the sport.


  • Automatic calculation of exit altitude, deployment altitude, deployment distance, and freefall, canopy, and skydive duration
  • Recording of flight trajectories
  • Ability to add gear, DZs, comments, and digital signatures to entries
  • Career summary and ability to add information about pre-Tobu skydiving career
  • Export of skydive data to CSV

Version 1.1.2 approved March 2023

Skydive Logger


Designed for skydivers and wingsuiters, Skydive Logger automatically records your jumps, including heights, speeds and time in freefall, and provides heading and distance to the dropzone while in flight (via audio or Apple Watch). With support for jump signing, AirPrint and iCloud backups, Skydive Logger can replace your paper logbook.

Version 3.4.2 approved March 2020



SkydiverPal is a first-of-its-kind skydiving assistant. Whether you're a beginner or an experienced skydiver, this app has everything you need to enhance your skydiving experience. Download SkydiverPal for free now and elevate your skydiving adventures to new heights!

Web version available at SkydiverPal.com.


  • Logbook: Track your jumps, record all the details, and create custom jump templates to capture every aspect of your skydiving experience.
  • Equipment: Keep your gear in top condition with maintenance notifications, gear history tracking, and reminders for replacements or upgrades.
  • Blog: Stay up-to-date with the latest news and articles in the skydiving community, and contribute your own insights and experiences.
  • Public Profile: Showcase your skydiving journey, connect with other skydivers, and share your achievements on social media.
  • Tools: Enhance your skydiving experience with tools like the wingload calculator, jumps program draw, freefall time calculator, and used equipment price estimator.
  • Synchronization: All your data is seamlessly synchronized across all your devices, ensuring the optimal user experience on every platform.

Version 1.4.10 approved June 2023

How do I know what logs are acceptable?
There are many legitimate ways of logging jumps whether it be digitally, on paper, or a combination. First, make sure the jump contains data in all of the required fields listed in SIM 3-1 C. Next, decide what the jump should be used for. Jumps for license and rating qualifications—that is, to count towards total jump numbers—must be signed by another licensed skydiver, a pilot, or a USPA National or FAI Judge who witnessed the jump. Jumps to meet skill requirements—for example an accuracy jump—must be signed by a USPA Instructor, Instructor Examiner, Safety & Training Advisor, or a member of the USPA Board of Directors. Finally, check there has been no alteration of logs. If logs are digital, make sure none of the required fields can be altered after the signature is gathered. If logging was done on paper, make sure there are no marks or writing over required data. If in doubt, contact signatory and check. Printouts of jumps from manifest software programs signed by a drop zone authority are acceptable if all of the data required by SIM 3-1 C are present.


USPA      5401 Southpoint Centre Blvd., Fredericksburg, VA, 22407     (540) 604-9740    M-F 9am-5pm Eastern    (540) 604-9741     uspa@uspa.org

Terms Of UsePrivacy StatementCopyright 2024 by United States Parachute Association
Your Source for all things Skydiving in the U.S.
Back To Top