Sentencewake: NMEA Logs
Marine sentence inspector
$2.99 · Designed for iPad. Not verified for macOS.
Parse NMEA 0183 logs offline, validate checksums, inventory talkers, plot fixes, and preserve raw lines beside results.
Sentencewake turns raw NMEA 0183 logs into an inspectable offline voyage record while keeping every conclusion traceable to its source line.
SEE THE VOYAGE
• Import text, log, and NMEA files from Files.
• Fuse RMC, GGA, and GLL position reports into a timed route.
• Review distance, duration, speed, checksum health, and instrument inventory.
• Inspect native route, speed, and quality charts.
AUDIT EVERY SENTENCE
• Distinguish valid, invalid, and missing transmitted checksums.
• Search and filter by issues, position, or sensor records.
• Inspect talker, formatter, fields, line number, and raw source together.
• Export only checksum-valid lines when a cleaned log is needed.
FIND WEAK SEGMENTS
• Detect fix gaps, coordinate jumps, duplicate sentences, void fixes, high HDOP, low satellite counts, and heading disagreement.
• Compare depth, wind, temperature, speed, and heading channels.
• Jump from a quality finding back to the exact source sentence.
WORK WITHOUT A SERVER
• Use a complete sample log immediately or import your own.
• Consult a dedicated offline reference for 14 common NMEA formatter families.
• Save the current analysis locally and export a native PDF report.
No account, advertising, subscription, server, or network connection is required.
Sentencewake is a diagnostic aid, not a navigation instrument. A valid checksum does not establish sensor accuracy, safe navigation, datum correctness, timing integrity, or equipment suitability.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Robert Corbin, 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
- Robert Corbin
- Size
- 3.2 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
- Age Rating
4+
- 4+
- Copyright
- © 2026 Robert Corbin
