# iStreams Solent — Live and future tidal streams

> Offline Solent tidal stream atlas with real-time charts and measurement tools. (iPhone/iPad app by Navtech Software.)

- Source: https://appshunter.io/ios/app/istreams-solent/id1454510704 (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 18.2 · 38 MB
- Languages: French (France), German (Germany), American English, Danish, Norwegian Bokmål, Dutch
- Released: 2019-03-03
- Data updated: 2026-08-22
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/istreams-solent/id1454510704/reviews.md

## What is iStreams Solent?

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

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Portsmouth Tides 2019 | $2.99 | one-time |
| 6 Month Subscription | $2.99 | one-time |
| 6 Month Subscription | $2.99 | one-time |
| 1 Month Subscription | $2.99 | one-time |
| 1 Year Subscription | $5.99 | 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 |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/istreams-solent/id1454510704/reviews.md

### 1/5 — Useless

*2023-08-18*

Can’t use it - whenever I open it it just keeps crashing. Not worth fiddling with.

### 1/5 — Do not buy this app

*2021-06-06*

It worked for a few days and then has not worked since. Deleted it, re-installed it. Switched phone off, re started and nothing happens other than it opens then immediately closes. Wanted to support this as it’s locally built but sorry if this was a product I’d be taking it back to where it came from and asking for a refund.

**Developer response:** Please contact us so we may find a solution for you. It could be as simple as freeing up some memory on your device.

### 5/5 — Really useful, but you need to subscribe

*2019-06-03*

Forget the one-star idiot, if you don’t subscribe you don’t have new data, once you subscribe it’s great.

### 1/5 — Old 2018 data beware

*2019-05-17*

Don’t rely on this as it is inaccurate and shows todays date and time perfectly but for 2018 and with 2018 data. So misleads you into the wrong information

**Developer response:** The app is free to download and try, using 2019 data. However if you subscribe, it will display 2020 ( or current year ) data.

### 5/5 — Top app. Very useful.

*2019-05-16*

Saves a lot of time working out tidal hours.

### 1/5 — Azanti

*2019-05-04*

Nice app but paid for licence on iPad but have to buy a second one to use on iPhone not friendly !

**Developer response:** The latest version employs iCloud to sync your licence across all your iOS devices

## Frequently asked questions about iStreams Solent

### What is iStreams Solent?

iStreams Solent is a navigation app that displays the valid hourly Solent tidal stream atlas for the current real time, referencing high water at Portsmouth. It offers tools to measure tide set and interpolated rates, functioning fully offline.

### Does iStreams Solent have ads?

No, iStreams Solent does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced tools.

### What are the in-app purchases for iStreams Solent?

iStreams Solent offers in-app purchases for a 'Set' tool to measure the precise true course of any tidal stream arrow, and a 'CTS' tool to calculate a course to steer. These enhance the app's navigational capabilities.

### Can I use iStreams Solent offline?

Yes, iStreams Solent is fully functional offline. This means you can access tidal stream data and charts without an internet connection, making it ideal for use at sea.

### How does iStreams Solent display tidal information?

The app displays hourly tidal stream charts for the Solent area. It automatically selects the nearest Portsmouth High Water time and shows the relevant chart, updating automatically as time progresses.

### Can I plan future trips with iStreams Solent?

Yes, iStreams Solent allows for forward planning. You can tap on the date to select a different day and view tidal data relevant to that specific date.

### What devices is iStreams Solent compatible with?

iStreams Solent is available for iPhone and iPad. It is designed for users of Apple mobile devices.

### How often is iStreams Solent updated?

The latest version of iStreams Solent is 2.93, last updated on December 2nd, 2025. Updates typically occur to improve functionality and data accuracy.

## Version history (last 5 releases)

### 3.10 — 2026-08-21

Localisations
When using outlook, selected date/time now persists when changing chart between East and West
Minor bug fixes

### 3.09 — 2026-06-01

Improved performance
Updated user interface
Portrait or Landscape orientation

### 2.93 — 2025-12-02

Updated for iOS 26

### 2.92 — 2025-07-21

Updates and minor bug fixes

### 2.91 — 2024-08-28

Updates and minor bug fixes

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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

[istreams solent](https://appshunter.io/ios/topics/istreams-solent) · [istreams english channel](https://appshunter.io/ios/topics/istreams-english-channel) · [istreams west scotland](https://appshunter.io/ios/topics/istreams-west-scotland) · [istreams north sea](https://appshunter.io/ios/topics/istreams-north-sea)

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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 2026-08-22.*