# iStreams Orkney Islands — Live and future tidal streams

> Live and future tidal streams (iPhone/iPad app by Navtech Software.)

- Source: https://appshunter.io/ios/app/istreams-orkney-islands/id1460673576 (this page in markdown: same URL + `.md`)
- Developer: [Navtech Software](https://appshunter.io/developer/355517263)
- Category: Navigation, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.4 · 41 MB
- Languages: American English, Danish, Dutch, French (France), German (Germany), Norwegian Bokmål
- Released: 2019-04-25
- Data updated: 2026-08-15
- User reviews in markdown: https://appshunter.io/ios/app/istreams-orkney-islands/id1460673576/reviews.md

## What is iStreams Orkney Islands?

iStreams gives you instant access to the Orkney 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 data when you need it most

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 6 Month Subscription | $2.99 | one-time |
| 1 Month Subscription | $2.99 | one-time |
| 1 Year Subscription | $5.99 | one-time |
| Unlock Set tool | $1.99 | one-time |
| Unlock CTS tool | $3.99 | one-time |



## Version history (last 5 releases)

### 3.10 — 2026-08-05

Localisations and minor bug fixes

### 3.09 — 2026-05-31

Chart data card now draggable to preferred position
Fix for malformed text when user has set large font for device

### 3.07 — 2026-05-27

Improved performance
Updated user interface
bug fixes

### 3.06 — 2026-05-25

Improved performance
Updated user interface

### 2.93 — 2025-12-02

Updated for iOS 26

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## More apps by Navtech Software

- [E6b Pilot — Flight Computer](https://appshunter.io/ios/app/e6b-pilot-flight-computer/id368495864)
- [iPlotter Solent](https://appshunter.io/ios/app/iplotter-solent/id397677340)
- [Dutchman's Log](https://appshunter.io/ios/app/dutchmans-log/id474782184)
- [iHeatLoss](https://appshunter.io/ios/app/iheatloss/id680564773)
- [Easter Match Puzzle](https://appshunter.io/ios/app/easter-match-puzzle/id836681161)
- [iStreams Channel Islands](https://appshunter.io/ios/app/istreams-channel-islands/id1223503159)

All apps by Navtech Software: https://appshunter.io/developer/355517263

## Related topics

[istream](https://appshunter.io/ios/topics/istream) · [istreams solent](https://appshunter.io/ios/topics/istreams-solent)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*