Shralp Tide 2 vs Surf
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shralp Tide 2
This app provides graphical tide displays and predictions for Apple Watch, iPhone, and iPad. It offers at-a-glance tide information, time travel for tide viewing, and a monthly tide calendar for planning. It supports thousands of US tide locations and currents.
- Graphical tide display
- Tide graph and highs/lows
- Watch complications for tide level
- Time travel for tide viewing
- Interactive iPhone tide graph
- Monthly tide calendar on iPad
- Thousands of US tide locations and currents
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Graphical tide display on your Apple Watch, iPhone and iPad. The watch app displays a tide graph and highs/lows for the day and allows selection of any location configured on the iPhone app. Several watch complications are provided to allow display of tide level and direction at a glance on any Apple watch face. Enable time travel to see the tide level at any point in the day. On the iPhone an interactive tide graph is displayed by turning your device to landscape mode. Then touch the screen to see the tide at any time in the 24 hour window. No network connection is required, so you can check anytime, anywhere. New on iPad you now see a month-to-month tide calendar. Use it to easily plan your beach activities a month or more in advance. Allows navigation through the coming months or backward if you want to see what the tide was on a past beach visit. Runs on the current XTide 2.x codebase. This adds thousands of U.S. tide locations and currents. Current prediction is now supported for some locations within the U.S. only. Currents must be enabled in the application settings menu. We have also added the ability to configure the number of days of tides to display from one to fifteen days out. Tide station selection has been improved. Stations can be selected either from a map or from a list view arranged by country and state or province. ----------------------------------------------------------------------- *** Regarding Tide Station Locations and Currents *** ShralpTide2 contains a wealth of tide and current information for the United States thanks to the NOAA. At present the NOAA is the only provider of data for current prediction. Prediction of currents is not available for countries other than the United States. Additionally, though tide station information is available for some countries outside of the United States, many tide stations that were previously available in the original ShralpTide are not available in ShralpTide2. ----------------------------------------------------------------------- Source code is available under the GNU General Public License. Visit the homepage for details. NOT FOR NAVIGATION This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. The author assumes no liability for damages arising from use of this program OR of any 'harmonics data' that might be distributed with it.
Surf
Get simple, accurate surf forecasts for over 7,000 breaks worldwide. Plan your sessions with detailed wave information, tide times, and mapping to find the best conditions and nearby spots. Access extended forecasts and custom alerts with premium features.
- Detailed surf forecasts
- Wavefinder map
- Live webcam links
- Tide times
- 12-day forecasts
- Custom surf alerts
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Surf-Forecast.com gives you simple, accurate and easy-to-read surf forecasts so you have the best chance of hitting those breaks when the waves are pumping. Built by surfers, for surfers, and trusted by millions of surfers for over 20 years, our updated app lets you see all your favorite surf spots at a glance. Providing detailed surf forecasts for over 7,000 breaks worldwide, our new features let you see further ahead than ever before - giving you plenty of advance warning for when those swells start coming in. Find the best surfing conditions near you and use the rating tool to find exactly when to go. – FREE App Features ⁃ Detailed surf forecasts ⁃ Wavefinder map ⁃ Live webcam links ⁃ Multi-swell component presentation ⁃ Tide times ⁃ Detailed mapping to locate nearby breaks – Surf Premium Benefits ⁃ Access to the full 16 days of our new Wavefinder feature ⁃ Hourly forecasts ⁃ 16 day forecasts ⁃ Custom surf alerts ⁃ Ad-free browsing on our website So what are you waiting for? Grab your board and get exploring. We’ll see you out there! For the full Terms and Conditions of this service please visit: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Surf at 86% against Shralp Tide 2's 24%. Surf also leads on price (Free vs $1.99) and rating (4.9 vs 4.4). Shralp Tide 2's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence, chart position, device support and iOS requirement 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
Surf is free to download; Shralp Tide 2 costs $1.99 up front. Surf sells 2 in-app purchases, starting at $4.99 per month. Shralp Tide 2 asks for nothing beyond the download.
Surf holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: Surf has 1K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 24% of Shralp Tide 2's written reviews are positive against 86% of Surf's.
Shralp Tide 2 ships an update every 3 weeks, Surf every 6 weeks. The most recent releases landed on November 10, 2026 and November 7, 2026 respectively.
| Parameter | Shralp Tide 2 | Surf |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.4 (8 ratings) | 4.9 (1K ratings) — better |
| Positive reviews | 23.6% of reviews | 86.4% of reviews — better |
| Number of ratings | 8 | 1K — better |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #43 — better | #98 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 25 MB | 138 MB |
| Age rating | 4+ | 4+ |
| Developer | shralpsoftware | Meteo365 Ltd. |
Customer experience
Shralp Tide 2
Surf
User reviews
Shralp Tide 2
From 8 App Store ratingsWhat we love
- 👍 Intuitive landscape graph
- 👍 Developer responsiveness
- 👍 Simplicity and design
- 👍 Works in Canada (some locations)
- 👍 Great Apple Watch complication
Room to improve
- 🐛 Crashes frequently
- 🐛 Loses saved locations
- 🐛 Reverts to default location
- 🐛 Missing many locations from previous version
- 🐛 Not available in Canada/Australia
Surf
From 1K App Store ratingsWhat we love
- 🌊 Accurate surf forecasts
- 👍 Easy to use and navigate
- 🗺️ Comprehensive coverage of locations
- 🔍 Detailed information (swell, wind, tides, etc.)
- 💰 Good value for subscription
Room to improve
- 🔄 Inconsistent data updates
- 🌊 Wave height/conditions not always accurate
- 🏞️ Missing data for some locations (e.g. Great Lakes)
- 🤔 Confusing or misleading surf ratings/forecasts
Bugs and requests
Shralp Tide 2
Reported bugs
20 issues- Horizontal cursor not working on iOS 15
- Crashes and loses saved locations
- Deletes favorite locations on close
- Reverts to La Jolla/Scripps Pier
- App crashes on start after deleting La Jolla
Show 15 moreShow fewer
- Saved locations go missing
- App crashes repeatedly after a while
- App won't open/crashes instantly
- Complication not showing on Watch 4 faces
- App reverts to La Jolla and deletes chosen location
- Defaults to La Jolla, requires manual input
- App doesn't open, stops immediately
- App crashes when deleting La Jolla
- App won't restart after crash
- App won't get past opening screen on iPad
- Upgrade wiped out saved locations
- App doesn't work since upgrade
- New upgrade won't let you keep tide station
- Can't access position with new version
- App doesn't load
Requested features
17 requests- Update to fix iOS 15 horizontal cursor issue
- Update for new Watch 4 faces
- Add metric units to Apple Watch app
- Add more BC tide stations
- Add Australian tides
Show 12 moreShow fewer
- Add Canadian tide stations back
- Add meters as a unit of measurement
- Add moon rise/set and sun rise/set
- Add current predictor
- Add more local tide locations
- Extend future planning beyond 15 days
- Allow planning for night tides
- Add low tide daylight times to Calendar
- Improve graphics and visuals
- Make app compatible with older devices
- Add current location maps
- Add weather integration
Surf
Reported bugs
2 issues- Crashes or freezes on some devices
- Geolocation issues with break markers
Requested features
4 requests- Ability to manually refresh data
- More detailed tidal/current information
- Expanded location coverage
- Improved accuracy for wave height/conditions
In-app purchases
Shralp Tide 2
No in-app purchases
Surf
- Premium Service: Monthly$4.991 Month
- Premium Service (Yearly)$34.991 Year









