Comparison

Tides Planner vs iStreams Solent

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

Head to head
About

Tides Planner

Access worldwide tidal information for over 8,000 locations without an internet connection. Features include tidal graphs, weekly tables, sunrise/sunset times, and moon phases. Advanced tools help calculate optimal time windows for various water activities.

Highlights
  • Offline worldwide tide data
  • Tidal graphs and weekly tables
  • Sunrise, sunset, and moon phases
  • Time window calculations
  • Searchable location database
  • Currents information (select regions)
Features
Read full description

Essential TIDES tool for sailors, divers, canoeists, fishermen, surfers, swimmers, photographers and anyone involved with sport or leisure at the seaside. At the push of a button Tides Planner allows you to see tides for 8,000+ WORLDWIDE locations. NO CONNECTION REQUIRED as the app has its own database. One tap to tides for your favourites. Advanced users can take advantage of extensive tools to calculate time windows for entering/leaving and clearing depths. FEATURES - Tidal graphs - Week ahead tide table - Minimum/maximum depths - Chart depth/actual depth - Standard port information - Spinning globe for rapid location search - Search by name - Time of sunrise/sunset, dawn/twilight - Moon phases, rise/set - Date of spring/neap tides - Notepad and copy/paste + email - Favourites and recents - Scrolling scales - Coefficients (France) - Currents (UK, Ireland, North Sea, Netherlands and parts of the German coast) From version 3.0 enhanced predictions for Europe based on our own constituent analysis system. Other countries to follow. GEOGRAPHIC COVERAGE Worldwide coverage. Some countries have time limits from the national Hydrographic Office. TIME COVERAGE The app gives access to all its features, but the free initial download is limited to tides for one day. To get future predictions use the Extensions within the app (In App purchase): - Year on year: use the extensions within the app (In App purchases) to enable future predictions. - In certain countries get a Hydrographic Licence to remove restrictions. HYDROGRAPHIC OFFICE LICENCES During a valid year: - Italy, USA, Canada (main ports), Australia, New Zealand, Japan and other countries: ANY DAY in the year. - Denmark, Spain, Portugal, South Africa, Oman, Argentina: SEVEN DAYS at a time. The following can be extended with a Hydrographic Office Licence to remove country restrictions: - UK, Ireland, Germany and all UKHO ports: change from seven days to ANY DAY. - Netherlands: change from seven days to ANY DAY. - Belgium: change from seven days to ANY DAY. - France and SHOM ports: from one day to ANY DAY. Each Hydrographic Office Licence is ONLY PURCHASED ONCE and applies to all Valid Years. ABOUT US Imray: publishers of nautical charts, books and apps. Look out for other applications in the Marine Navigation Series from Imray. Follow us on Twitter: http://twitter.com/imray_charts Facebook/Imray-Laurie-Norie-Wilson-Ltd-304115312941493 LANGUAGES English, French, German, Italian, Spanish and Japanese ABOUT PREDICTIONS Predictions are based on the harmonic method, using constants from the Hydro offices (UKHO, SHOM, NOAA, BOM, CHS etc). There are differences between the app predictions and the official Hydro office tide tables, as these are based on large numbers of constants that are not made publicly available. The Hydro offices consider the harmonic methods used in this product appropriate for navigation. Always consult tidal curves and take into account local weather (pressure and wind) and swell conditions, which can have a very significant effect on sea water levels.

About

iStreams Solent

This app provides real-time Solent tidal stream data, displaying hourly charts and tools to measure tide set and interpolated rates. It functions offline and allows for future planning by selecting different dates.

Highlights
  • Real-time Solent tidal stream charts
  • Offline functionality
  • Tide set and rate measurement tools
  • Automatic Portsmouth HW time selection
  • Date selection for future planning
  • Zoomable charts
  • Boat position display on chart
Read full description

iStreams gives you instant access to the Solent tidal stream atlas, aligned to the current time using High Water at Portsmouth— even when you're offline. Whether you're sailing, navigating coastal waters, or passage planning, iStreams helps you understand tidal flow quickly and accurately. Key Features: Real-time tidal stream charts Automatically displays the correct hourly chart based on the nearest Portsmouth High Water time. Fully offline functionality (forecast link requires a connection) No signal? No problem. All charts and tools work without internet access. As time progresses, the app switches to the next valid tidal period. Swipe forward and backward through tidal hours with ease. Select any date for future planning Pinch to zoom and drag to explore details. Toggle between Local Time and UTC. Show boat position on the chart Navigation Tools: Interpolated Rate Calculator * Instantly calculate stream rate between neaps and springs. Tidal Set Tool (In-App Purchase) * Measure the true direction of tidal stream arrows with precision. Course to Steer (CTS) (In-App Purchase) * Calculate the correct heading to maintain your intended course. How It Works: iStreams automatically selects the nearest High Water at Portsmouth and displays the corresponding tidal stream chart. Want to plan ahead or review earlier conditions? Simply swipe forward or backward through the tidal hours to view past or future data. Why Choose iStreams? Designed for sailors, navigators, and coastal users Fast, clear, and easy-to-use interface Accurate tidal data when you need it most

Screenshots

Tides Planner3 screens
iStreams Solent4 screens

Verdict

The call

The clearest difference is iOS requirement: Tides Planner at 11.0 against iStreams Solent's 18.2. On price, review sentiment, update cadence and ads 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. Tides Planner sells 13 one-off in-app purchases and iStreams Solent sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 27, 2026 and October 12, 2026 respectively.

Scorecard1 real difference · 9 level
Tides Planner versus iStreams Solent: the parameters behind the verdict, then further details
ParameterTides PlanneriStreams Solent
PriceFreeFree
Rating3.8 (17 ratings) — better—
Positive reviews38.8% of reviews — better33.3% of reviews
Number of ratings17 — better—
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better18.2
Further details — not scored
Size93 MB38 MB
Age rating4+4+
DeveloperFB Imray Laurie Norie & Wilson GmbHNavtech Software

Customer experience

Tides Planner

All ratings17 ratings
Positive64.7%
Neutral11.8%
Negative23.5%
Written reviews289 reviews
Positive38.8%
Neutral10.7%
Negative50.5%

iStreams Solent

Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Bugs and requests

Tides Planner

Reported bugs

4 issues
  • Tide data inaccuracies
  • Crashes on startup
  • Inability to save/restore user preferences
  • Licensing issues preventing access to full features

Requested features

5 requests
  • Improved map/location functionality
  • Streamlined user interface
  • Ability to view tide data for multiple days without additional cost
  • Tidal current information
  • Sunrise/sunset data integration

iStreams Solent

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Tides Planner

One-time13
  • Tides 2012$1.99
  • Tides 2013$1.99
  • Tides 2014$1.99
Show 10 more
  • Tides 2020$3.99
  • Tides 2021$3.99
  • Tides 2015$3.99
  • Tides 2016$3.99
  • Tides 2017$3.99
  • Tides 2018$3.99
  • Tides 2019$3.99
  • Tides 2024$6.99
  • Tides 2026$6.99
  • Tides 2025$6.99
6 purchases

iStreams Solent

One-time6
  • Unlock 'Set' tool$1.99
  • Portsmouth Tides 2019$2.99
  • 6 Month Subscription2 variants$2.99
Show 3 more
  • 1 Month Subscription2 variants$2.99
  • Unlock CTS tool$3.99
  • 1 Year Subscription2 variants$5.99

Questions

Is Tides Planner free?
Tides Planner is free to download, with in-app purchases available.
Is iStreams Solent free?
iStreams Solent is free to download, with in-app purchases available.
Do Tides Planner or iStreams Solent have ads?
Neither Tides Planner nor iStreams Solent shows ads.
Which is updated more often, Tides Planner or iStreams Solent?
Tides Planner ships an update every 3 months, and iStreams Solent every 3 months. Most recently, Tides Planner was updated on October 27, 2026 and iStreams Solent on October 12, 2026.

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