iStreams Solent vs iVMS
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
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.
- 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
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iStreams gives you instant access to the Solent tidal stream atlas, aligned to the current time using High Water at Portsmouthβ 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
iVMS
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iVMS gives you immediate access to key information about your vehicle and allows you to instantly make your journey net carbon neutral. You can check your vehicle health including fault codes, driving score and journey information all in real time. Beyond vehicle telematics we transport you on a revolutionary driving journey where you take control on the amount of carbon you emit allowing you to save up to 40% on fuel. You can also remotely unlock your vehicle and stop the ignition in case of theft. An in built SOS feature will automatically contact emergency services and designated loved ones in case of an accident. Its FREE to download and available to drivers who have the iVMS hardware installed.
Screenshots
Verdict
The clearest difference is in-app purchases: iVMS at none against iStreams Solent's 9. iVMS also leads on iOS requirement (15.1 vs 18.2). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. iStreams Solent sells 6 one-off in-app purchases. iVMS asks for nothing beyond the download.
iStreams Solent ships an update every 3 months, iVMS every 2 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.
| Parameter | iStreams Solent | iVMS |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | β |
| Update frequency | Every 3 months | Every 2 months β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Monetization | Free with in-app purchases | β |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.2 | 15.1 β better |
| Further details β not scored | ||
| Size | 38 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Navtech Software | HAS INNOVATIONS TRADING LLC |
In-app purchases
iStreams Solent
- Unlock 'Set' tool$1.99
- Portsmouth Tides 2019$2.99
- 6 Month Subscription2 variants$2.99
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- 1 Month Subscription2 variants$2.99
- Unlock CTS tool$3.99
- 1 Year Subscription2 variants$5.99
iVMS
No in-app purchases







