Comparison

iStreams Channel Islands vs ProSkipper

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

Head to head
About

iStreams Channel Islands

This app provides real-time Channel Islands tidal stream data, functioning offline. It offers tools for measuring tide set and rate, and calculating Course to Steer. Plan your voyages with hourly charts and precise navigational information.

Highlights
  • Hourly tidal stream atlas
  • Offline functionality
  • Tide set and rate measurement
  • Course to Steer calculation
  • Local and UTC time options
  • Boat position display on chart
  • Zoomable charts
Features
Read full description

iStreams gives you instant access to the Channel Islands tidal stream atlas, aligned to the current time using High Water at Dover — 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 Dover High Water time. Fully offline functionality (forecast link requires a connection) No signal? No problem. All charts and tools work without internet access. Automatic chart updates As time progresses, the app switches to the next valid tidal period. Swipe forward and backward through tidal hours with ease. 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 Dover 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 streams

About

ProSkipper

Read full description

Que vous soyez au large ou en préparation à quai, ProSkipper combine la puissance de la technologie avec la passion pour la mer, en simplifiant la gestion des documents de bord et en vous donnant un accès instantané à la réglementation nautique actuelle. Avec ProSkipper, finis les tracas administratifs : tout ce dont vous avez besoin est à portée de main, vous permettant de vous concentrer pleinement sur votre passion pour la navigation. Et avec des fonctionnalités avancées à venir, telles que le monitoring en temps réel et la maintenance prédictive, ProSkipper est prête à devenir votre partenaire de navigation privilégié. Embarquez dès aujourd'hui pour une navigation fluide et sécurisée avec ProSkipper, votre allié indispensable pour explorer les vastes horizons maritimes seul, ou accompagné.

Screenshots

iStreams Channel Islands4 screens
ProSkipper4 screens

Verdict

The call

The clearest difference is in-app purchases: ProSkipper at none against iStreams Channel Islands's 7. ProSkipper also leads on iOS requirement (14.0 vs 18.2). iStreams Channel Islands's advantage is device support. On price 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. iStreams Channel Islands sells 7 one-off in-app purchases. ProSkipper asks for nothing beyond the download.

Scorecard3 real differences · 5 level
iStreams Channel Islands versus ProSkipper: the parameters behind the verdict, then further details
ParameteriStreams Channel IslandsProSkipper
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyEvery 3 months—
AdsNo—
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — better—
Requires iOS18.214.0 — better
Further details — not scored
Size56 MB49 MB
Age rating4+4+
DeveloperNavtech SoftwareAmiltone

In-app purchases

7 purchases

iStreams Channel Islands

One-time7
  • Unlock Set tool$1.99
  • Dover Tides 2018$2.99
  • Dover Tides 2019$2.99
Show 4 more
  • 6 Month Subscription$2.99
  • 1 Month Subscription$2.99
  • Unlock CTS tool$3.99
  • 1 Year Subscription$5.99
None

ProSkipper

No in-app purchases

Questions

Is iStreams Channel Islands free?
iStreams Channel Islands is free to download, with in-app purchases available.
Is ProSkipper free?
ProSkipper is free to download, with no in-app purchases.

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