ApogeeLog: Model Rocketry
Motor, Recovery & Flight Log
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Predict apogee, size recovery, log every flight — 100% offline at the launch field. Real physics, certified motor database, and an honest error band on every estimate.
Predict your apogee, size your recovery, and log every flight - 100% offline at the launch field.
ApogeeLog is the model rocketry field companion: real boost-and-coast physics off a bundled certified-motor database, parachute sizing for a safe descent, and a searchable flight & motor log. No account, no internet, ever. Every apogee carries an honest error band - it's an estimate to plan with, so verify altitude with a certified altimeter.
PREDICT YOUR APOGEE - FREE, UNLIMITED
- Deterministic boost-and-coast physics - the same ~10-15% band the desktop tools work in
- Predicted apogee + max velocity (with Mach) - every result shows a visible +/- error band
- Altitude-vs-time and velocity-vs-time charts - see the whole flight, not just one number
SIZE YOUR RECOVERY - FREE, UNLIMITED
- Solve parachute diameter for a target descent rate - or enter a chute, get the rate
- Flat and dome presets, a 3-6 m/s safe-band check, and a wind-drift estimate
- Density-altitude refinement from your field elevation and temperature
LOG EVERY FLIGHT, PROVE EVERY CERT
Your fleet, your motors, your L1/L2/L3 cert history - off the spiral notebook for good.
- Predicted vs measured apogee on every flight - the record that actually means something
- Live stats: highest and fastest flight, total impulse, cert progress, most-flown rocket
- GPS landing, motor inventory, searchable history, CSV import/export
EXPORT A CERT PROOF REPORT
- One-tap PDF + CSV - rocket and motor spec, altitude curve, recovery plan, log summary
- Assumptions and the error band printed on the page, honestly labeled
- A self-reported estimate for record-keeping - not a certifying measurement
THE CERTIFIED MOTOR DATABASE
Searchable, offline, and built on the public NAR/Tripoli/CAR certified lists.
- Search by designation, class, or manufacturer - impulse, thrust, burn time, thrust curve
- Bundled snapshot works with zero signal; optional refresh keeps it current (Premium)
- Every entry attributed and date-stamped, so you always know how current it is
BUILT TO LAST, MADE FOR THE FIELD
The desktop tools need a laptop; past iOS apps were abandoned. ApogeeLog is native, maintained, and fully on-device - your data never leaves your iPhone.
GROUND ALTITUDE TRACKER (an estimate - not an altimeter)
Point your phone at apogee for a no-hardware altitude estimate with an uncertainty band. Two-station tracking adds the NAR 10% "track closed" confidence. A practice tool - it does not replace an onboard altimeter.
FREE FOREVER
- Unlimited apogee prediction (full motor database) and parachute/recovery sizing
- Single-station altitude tracker
- Up to 3 saved rockets and 10 logged flights
PREMIUM SUBSCRIPTION
ApogeeLog Premium adds:
- Unlimited flight & motor log + your full rocket fleet
- The certified motor database, kept up to date
- One-page cert proof report (PDF) + CSV export
- Two-station altitude tracking and advanced calcs (Barrowman stability, ejection charge, drift, optimal delay, density-altitude)
Subscription options:
Premium Monthly: $3.99/month
Premium Annual: $19.99/year - includes a 7-day free trial
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase.
Terms of Service: https://apogeelog.bulpara.com/terms
Privacy Policy: https://apogeelog.bulpara.com/privacy
Estimates for planning - verify altitude with a certified altimeter and follow your club RSO and the NAR/Tripoli/CAR safety code. Not affiliated with or endorsed by any motor manufacturer, NAR, Tripoli, CAR, or Apogee Components.
Questions? support@apogeelog.bulpara.com
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The developer, BULPARA TEKNOLOJI LIMITED SIRKETI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BULPARA TEKNOLOJI LIMITED SIRKETI
- Size
- 4.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Premium Monthly $3.99
- Premium Annual $19.99
- Copyright
- © Bulpara 2026