Astramate
Maritime Tools & Calculators
Only for iPhone
$2.99 · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Professional maritime calculation tools for voyage, compass, loading, draft and stability, unit conversion, vessel profiles, history, and export.
Astramate is an offline-first maritime calculation toolkit designed for seafarers, deck officers, cadets, and maritime professionals.
It provides practical calculation tools with visible formulas, clear working steps, input validation, and warnings to help you understand how each result is produced.
FEATURES
• Voyage calculations
• Compass calculations
• Loading calculations
• Draft and stability tools
• Maritime unit converter
• Linear and bilinear interpolation
• Vessel profiles
• Calculation history
• JSON backup and export
• Searchable formula and tool library
• Offline-first operation
Astramate includes maritime calculation tools for tasks such as ETA, distance, average speed, compass error, true and compass conversions, stowage factor, cargo volume, cargo weight, draft calculations, trimming calculations, and other onboard utilities.
FREE
Access core calculation tools with advertising.
3-DAY TRIAL
Access all tools with an ad-free experience during the trial period.
PREMIUM LIFETIME
Unlock all Premium tools, additional vessel profile features, full history/export functionality, and an ad-free experience with a one-time Apple In-App Purchase.
No online account or sign-in is required to use Astramate.
IMPORTANT
Astramate is a calculation and reference aid. Results should always be verified against approved vessel documentation, official publications, company procedures, and applicable maritime regulations before operational use.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, JOSEPH MAYANI SARADOR, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- JOSEPH MAYANI SARADOR
- Size
- 11.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 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+
- Contains
Advertising
- In-App Purchases
Yes
- Astramate Premium Lifetime $2.99
- Copyright
- © 2026 AstraLabs PH