Comparison

Absolute Tides vs Sena Marine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Absolute Tides

Access official UKHO tidal data offline for up to a year in advance. View monthly tide tables, daily charts, and tidal streams. Includes weather forecasts and anchoring assistance.

Highlights
  • Offline UKHO tidal data
  • Annual data plugins
  • Monthly tide tables
  • Daily tide charts
  • Tidal stream view
  • Met Office weather forecast
  • Anchoring assistance
Features
Read full description

Displays officially licenced UKHO tidal data on an annual basis without ever needing to go online. The tidal data is contained in our annual data plugins and must be purchased using in-app purchases. Once you have purchased the data, this app will allow you to view UKHO standard port tides up to a year in advance. The app will also calculate secondary port tides using its own built in offsets. (The 'UK data 2016' IAP contains data for 38 primary ports and over 500 secondary ports, see our website for more details on coverage) The main view is an 'At a glance' table view of each month's tides and tidal ranges. Selecting an entry will display an easy to use daily chart view showing the tide height for any time of day and a tidal stream view showing tidal direction and speed at hourly intervals. The Weather section downloads and displays the current Met Office Inshore Forecast. Absolute Tides also makes anchoring easy by calculating the maximum and minimum tides beween the current time and any selected future date/time. Note: This application will NOT work without at least one of our tidal data in-app purchases being installed. Please check that the tide data you want is available before downloading this app. The small print: For leisure use only. Heights of tides can vary from those predicted depending on the prevailing weather conditions. All data is given in good faith and is believed to be correct but we accept no responsibility for any consequential loss or damage arising from use of this application. Secondary port data calculated using offsets will be less accurate than the UKHO standard port data. This app is neither affiliated to nor endorsed by the Met Office.

About

Sena Marine

Features
Read full description

*Note: The Sena Marine App works with selected Sena products. ---------------------------------------------------- Introducing the Sena Marine App The key features of the Sena Marine App are as follows. * Remote Control for Mesh Intercom and phone * Manage pairing list * Individual volume management * Get notifications of the latest firmware * Download and view the User's Guide or Quick Start Guide * Basic device settings * Set up speed dials To use the Sena Marine App, download the app and pair/connect your Sena headset to your mobile phone in the Bluetooth settings menu. List of supported products - NAUTITALK BOSUN, NAUTITALK CREW, NAUTITALK OPEN, NAUTITALK EASY, NAUTITALK N2R. Exact list of features may vary with individual products. Please contact us for support at sena.com. About Sena Technologies Co., Ltd. Sena Technologies Co., Ltd. is a leading provider of Bluetooth communication devices, including Bluetooth motorcycle intercom. Since its first and flagship product, the SMH10 Bluetooth intercom/headset for Motorcycle helmets, Sena has been a leading provider of Bluetooth communication systems for power sports and other outdoor activities. Sena offers its products worldwide through its global network of distributors, retailers and OEM partners. For more information on Sena Technologies Co., Ltd. and its products, please visit www.sena.com.

Screenshots

Absolute Tides4 screens
Sena Marine4 screens

Verdict

The call

The clearest difference is in-app purchases: Sena Marine at none against Absolute Tides's 11. Absolute Tides's advantage is device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Absolute Tides sells 11 one-off in-app purchases. Sena Marine asks for nothing beyond the download.

UpkeepUpdate frequency

Absolute Tides ships an update every 5 months, Sena Marine every 3 months. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.

Scorecard2 real differences · 6 level
Absolute Tides versus Sena Marine: the parameters behind the verdict, then further details
ParameterAbsolute TidesSena Marine
PriceFreeFree
Positive reviews67.1% of reviews—
Update frequencyEvery 5 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size30 MB53 MB
Age rating4+4+
DeveloperDarren EdwardsSena Technologies

Bugs and requests

Absolute Tides

Reported bugs

10 issues
  • App stopped working after 2025/2026 update
  • App crashes when selecting River Tyne ports
  • App crashes immediately on opening with 2024 data
  • Tyne ports cause app to disappear and require reinstallation
  • App crashes on iPad when clicking 'Streams'
Show 5 more
  • App crashes on opening after iPhone update
  • App crashes on iPhone 6
  • App crashes on opening
  • App stops working at the end of the year
  • App crashes when loading data

Requested features

10 requests
  • Version covering full French Brittany & Atlantic coasts using SHOM charts
  • Indication of Standard vs. Secondary port in tide time display
  • Include Fleetwood or more detailed Morecambe Bay data
  • Map showing port locations
  • Apple Watch complication
Show 5 more
  • Full 12 months of data for subscription
  • Constant view of at least the next 6 months
  • Larger print/double-sized display for day selection
  • Ability to restore purchases after losing a phone
  • Option to purchase data for specific regions or a full year upfront

Sena Marine

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

Absolute Tides

One-time11
  • UK Tides 2016Free
  • UK Tides 2017Free
  • UK Tides 2018Free
Show 8 more
  • UK Tides 2019Free
  • UK & Eire Tides 2020Free
  • UK & Eire Tides 2021Free
  • UK & Eire Tides 2022$2.99
  • UK & Eire Tides 2023$2.99
  • UK & Eire Tides 2024$2.99
  • UK & Eire Tides 2026$2.99
  • UK & Eire Tides 2025$2.99
None

Sena Marine

No in-app purchases

Questions

Is Absolute Tides free?
Absolute Tides is free to download, with in-app purchases available.
Is Sena Marine free?
Sena Marine is free to download, with no in-app purchases.
Do Absolute Tides or Sena Marine have ads?
Neither Absolute Tides nor Sena Marine shows ads.
Which is updated more often, Absolute Tides or Sena Marine?
Absolute Tides ships an update every 5 months, and Sena Marine every 3 months. Most recently, Absolute Tides was updated on October 16, 2026 and Sena Marine on October 19, 2026.

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