NauticCalc Downloads & RevenueNauticCalc: Nav Calculator · App Store
Not in any tracked top chart right now.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperDaniel Ehrensperger
CategoryNavigation
Price12.99 CAD
Released
Rating★ 0.0 (0)
Version1.10.1
Age rating17+
First seen by us
30 Sep 2026
30 Sep 2026NauticCalc: Nav Calculator update history & changes
Last change · 10 events since 11 May 2026Full timeline ↓📈Dropped out of every chart we track📈Entered the top 100 in 2 charts📦Updated to version 1.10.1📦Updated to version 1.9.0🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 10 events
- 📈NauticCalc: Nav Calculator dropped out of every chart we trackLast seen 3 Nov
- 📈NauticCalc: Nav Calculator entered the top 100 in 2 chartsTop Paid · Navigation · DE · Top Paid · Navigation · IT
- 📈NauticCalc: Nav Calculator charting in a new country in 2 chartsGermany · Italy
- 📈NauticCalc: Nav Calculator entered the top 100Top Paid · Navigation · CA
- 📈NauticCalc: Nav Calculator charting in a new countryCanada
- 📦NauticCalc: Nav Calculator updated to version 1.10.1Three calculators that now answer correctly
• Fixed: the Dutchman's Log showed twice the speed. You time an object thrown in at the bow until it passes the stern – but the calculation assumed twice the vessel's length. 10 metres in 5 seconds came out as 7.8 knots instead of 3.9.
• Fixed: the ETA Calculator accepted a speed of 0. It then returned the departure time as the arrival and a duration of zero hours – "already there" with the vessel stopped. The entry is now rejected with a message.
• Fixed: in the Current Triangle a speed of 0 did nothing at all under "Steering Course" and "Determine Current" – no result and no hint as to what was wrong. Under "Course over Ground" the hint did appear, but in German whatever the app language.… more - 📦NauticCalc: Nav Calculator updated to version 1.9.0Voyage planning explains what it recommends
• New: the recommended departure window names the problems it avoids – gusts, reefing pressure, rough seas or arriving after sunset
• New: the voyage explanation describes the voyage, not just the weather – whether the current pushes, slows or sets you across, when the next tidal change is due and, for an arrival in the dark, the times to go with it
• Course correction: the wind is now named as port or starboard, the current and deviation corrections by their sign – "east" and "west" stay with variation, where the chart prescribes them
• The field you are typing in now carries a clear border – previously the blinking cursor was the only clue
• Fixed: rough seas dropped out of the explanation before anyone could read it
• Fixed: times in the explanation were shown in device time instead of local time at the destination
• Fixed: bringing your own OpenWeatherMap key gave "invalid key", when all that was missing was the free "One Call by Call" subscription – the app now says what is really missing and takes you straight there
• Fixed: voyage planning reported missing weather and tide data without ever saying why – it now tells you whether a request quota is used up, a subscription is missing, or the source simply has nothing for that place
• Fixed: in waters with little tide, a tide warning stood there permanently, complete with "Load now" – a button that could never load anything there
• Fixed: a semicolon in the entry type shifted every following column in the voyage CSV
• Fixed: the voyage CSV mixed German and translated column headings
• Fixed: in the wind calculator, a port side picked on the wind rose appeared as "east" in the result and in the logbook entry
• Fixed: the automatic jump to the next field pulled the focus out of the row being typed in – anything typed on landed in a calculated field and vanished
• Fixed: the note under the voyage explanation said "AI-generated" even when the text was assembled from the computed values without AI – the same in the PDF export
• Fixed: in the Anchor Alarm, the status line and the distance line gave two different numbers for the same distance
• Fixed: the wind rose labelled its sectors in German while the rest of the screen was translated
• Fixed: the connection to an NMEA gateway on the boat's Wi-Fi never came up – iOS never asked for local network permission, without which no instrument data gets through… more - 🆕NauticCalc: Nav Calculator first spotted by AppInsider#8 in Top Paid · Navigation · France
- 📦NauticCalc: Nav Calculator version 1.8.0Polar templates and a course correction you can follow
• New: six polar templates from daysailer to cruising catamaran – pick the closest match instead of typing the grid by hand, then fine-tune the values in the editor
• Voyage Briefing: the new "Source" picker shows where the speed comes from – cruising speed, onboard instruments or the polar diagram
• Course correction: the course chain now shows all five courses – compass, magnetic, true, through water and over ground. You see the whole calculation, not just the result
• Course correction: a note appears when the wind or current correction exceeds 45° – usually the drift angle was worked out for a different course
• Fixed: leeway was applied to the wrong side. Wind from starboard lowers the course figure – please re-check any courses you worked out with it
• Angle fields are now labelled "Deg / Min / Sec" instead of small tick marks
• Texts are consistently in English; the last German remnants have been translated
• Fixed: variation and the current triangle rounded the course to 0.1° – that is 6 minutes. 5° 20′ came back as 5° 18′; both are now accurate to the second
• Fixed: with the keyboard open, the tab bar or the plus button at the bottom could cover an input field – a tap on the middle of the field missed it
• The polar diagram and onboard instruments are still being unlocked gradually… more - 🆕NauticCalc: Nav Calculator released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
NauticCalc: Nav Calculator on the App Store
App details
App ID
6755406173
Publisher
Daniel Ehrensperger
On the store since
May 2026
Under a year
Minimum OS
iOS 17.6+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
17+
1 content note below
Languages
6
NL EN FR DE IT ES
Size
34 MB
Also listed in
Education
Content notesUnrestricted Web Access
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
What users say about NauticCalc: Nav Calculator
From recent reviews.
About NauticCalc: Nav Calculator
NauticCalc is a professional calculator for precise nautical navigation at sea. Designed for sailors, skippers and maritime crews, it helps you plan safe routes, correct courses and understand changing conditions.
Use NauticCalc to convert between knots, kilometres per hour, metres per second, miles per hour and feet per second. Switch depth units between metres, fathoms and feet, and handle distance in nautical miles, metres and kilometres with confidence.
Plan your voyage with accurate course calculations. Adjust compass headings for deviation and variation, and apply wind and current corrections to keep your vessel on track. Estimate arrival times using distance and speed so you can manage watch schedules and harbour approaches.
Work with wind in Beaufort, kilometres per hour, metres per second and knots. Assess sea conditions, choose suitable sail plans and prepare for regatta or cruising passages. Combine speed, heading and drift to understand the effect of current on your track.
NauticCalc supports everyday coastal sailing as well as longer offshore trips. Use it alongside your paper charts, electronic plotter and logbook to cross check bearings, positions and routes.
Whether you sail a small boat or a large yacht, NauticCalc gives you clear, reliable calculations to support safe and efficient navigation.
Use NauticCalc to convert between knots, kilometres per hour, metres per second, miles per hour and feet per second. Switch depth units between metres, fathoms and feet, and handle distance in nautical miles, metres and kilometres with confidence.
Plan your voyage with accurate course calculations. Adjust compass headings for deviation and variation, and apply wind and current corrections to keep your vessel on track. Estimate arrival times using distance and speed so you can manage watch schedules and harbour approaches.
Work with wind in Beaufort, kilometres per hour, metres per second and knots. Assess sea conditions, choose suitable sail plans and prepare for regatta or cruising passages. Combine speed, heading and drift to understand the effect of current on your track.
NauticCalc supports everyday coastal sailing as well as longer offshore trips. Use it alongside your paper charts, electronic plotter and logbook to cross check bearings, positions and routes.
Whether you sail a small boat or a large yacht, NauticCalc gives you clear, reliable calculations to support safe and efficient navigation.
Latest updates
1.10.1
Three calculators that now answer correctly
• Fixed: the Dutchman's Log showed twice the speed. You time an object thrown in at the bow until it passes the stern – but the calculation assumed twice the vessel's length. 10 metres in 5 seconds came out as 7.8 knots instead of 3.9.
• Fixed: the ETA Calculator accepted a speed of 0. It then returned the departure time as the arrival and a duration of zero hours – "already there" with the vessel stopped. The entry is now rejected with a message.
• Fixed: in the Current Triangle a speed of 0 did nothing at all under "Steering Course" and "Determine Current" – no result and no hint as to what was wrong. Under "Course over Ground" the hint did appear, but in German whatever the app language.
1.9.0
Voyage planning explains what it recommends
• New: the recommended departure window names the problems it avoids – gusts, reefing pressure, rough seas or arriving after sunset
• New: the voyage explanation describes the voyage, not just the weather – whether the current pushes, slows or sets you across, when the next tidal change is due and, for an arrival in the dark, the times to go with it
• Course correction: the wind is now named as port or starboard, the current and deviation corrections by their sign – "east" and "west" stay with variation, where the chart prescribes them
• The field you are typing in now carries a clear border – previously the blinking cursor was the only clue
• Fixed: rough seas dropped out of the explanation before anyone could read it
• Fixed: times in the explanation were shown in device time instead of local time at the destination
• Fixed: bringing your own OpenWeatherMap key gave "invalid key", when all that was missing was the free "One Call by Call" subscription – the app now says what is really missing and takes you straight there
• Fixed: voyage planning reported missing weather and tide data without ever saying why – it now tells you whether a request quota is used up, a subscription is missing, or the source simply has nothing for that place
• Fixed: in waters with little tide, a tide warning stood there permanently, complete with "Load now" – a button that could never load anything there
• Fixed: a semicolon in the entry type shifted every following column in the voyage CSV
• Fixed: the voyage CSV mixed German and translated column headings
• Fixed: in the wind calculator, a port side picked on the wind rose appeared as "east" in the result and in the logbook entry
• Fixed: the automatic jump to the next field pulled the focus out of the row being typed in – anything typed on landed in a calculated field and vanished
• Fixed: the note under the voyage explanation said "AI-generated" even when the text was assembled from the computed values without AI – the same in the PDF export
• Fixed: in the Anchor Alarm, the status line and the distance line gave two different numbers for the same distance
• Fixed: the wind rose labelled its sectors in German while the rest of the screen was translated
• Fixed: the connection to an NMEA gateway on the boat's Wi-Fi never came up – iOS never asked for local network permission, without which no instrument data gets through
1.8.0
Polar templates and a course correction you can follow
• New: six polar templates from daysailer to cruising catamaran – pick the closest match instead of typing the grid by hand, then fine-tune the values in the editor
• Voyage Briefing: the new "Source" picker shows where the speed comes from – cruising speed, onboard instruments or the polar diagram
• Course correction: the course chain now shows all five courses – compass, magnetic, true, through water and over ground. You see the whole calculation, not just the result
• Course correction: a note appears when the wind or current correction exceeds 45° – usually the drift angle was worked out for a different course
• Fixed: leeway was applied to the wrong side. Wind from starboard lowers the course figure – please re-check any courses you worked out with it
• Angle fields are now labelled "Deg / Min / Sec" instead of small tick marks
• Texts are consistently in English; the last German remnants have been translated
• Fixed: variation and the current triangle rounded the course to 0.1° – that is 6 minutes. 5° 20′ came back as 5° 18′; both are now accurate to the second
• Fixed: with the keyboard open, the tab bar or the plus button at the bottom could cover an input field – a tap on the middle of the field missed it
• The polar diagram and onboard instruments are still being unlocked gradually