tcSpeeds vs TideView
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
tcSpeeds
This app provides advanced sailing performance metrics using your device's GPS and sensors. It offers detailed speed, wind, and directional measurements, along with a proprietary performance index. Easily track your progress and compare it with others, with zero setup required.
- Advanced speed and velocity measurements
- Proprietary Pilot Performance Index (PPI)
- Wind measurement with optional sensor
- Waypoint navigation and tracking
- Apple Watch extension
- Real-time performance alerts
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tcSpeeds provides advanced knowledge of your current speed, average speeds, maximum speed, directional speeds, velocity made good, wind measurements, and much more. You will be able to measure your performance on a straight course with our proprietary Pilot Performance Index (PPI) computation. Compare how good you are at the controls with your friends or against your autopilot. tcSpeeds stands on its own and does not require external hardware or connections to operate. tcSpeeds uses your device's own internal GPS, accelerometers, and compass. For Wind measurement, you will need to acquire the Calypso Ultrasonic Wind sensor. More sensors will be supported in the future. Easy to use and conceived to minimize operational burden on the user, because we know you have other things to do. Zero setup required: install, launch and tap the start button. Designed for iPhones, and GPS-equipped iPads. CAPABILITIES - Add waypoints on the map - Apple watch extension - auto-VMG Velocity Made Good automatic detection - Add, move, or edit you waypoint location on the map - Cross track to waypoint indicator - Record and save your track - Start Line guide for speed and heading when you race - VMG automatic maximum VMG to waypoint - VMG visual assistant: guides you to the best course to the waypoint on the current tack - Maximum VMG indicator relative to waypoint - Audio alert for Acceleration and maximum speed: get instant feedback for you and your team when you are doing it right - Apple Watch Extension: Speed, Course, VMG, Cross-Track, Display remote control and more - Arrival Time: smart computation using filtered VMG averages - Barometer indicator on supported devices - Pilot Performance Index (PPI) calculation improvement - Speed indicator with color-scaled plot - Directional speed vectors panel with automatic polar graph - Maximum speed keeping - Maximum speed audio and visual alarms - Trip distance recording - Add, move, edit Waypoints - Accurate sub-second timer - GPS status with location accuracy indication - Boxed average speed by timed interval: 10-sec 1-min 10-min 1-hour - Pilot Performance Index (PPI) calculation, measurement, and guide - Target course indicator with automatic and manual fine tuning - Headings, bearings and directional indicators (magnetic/true) - Precise real-time cross track reporting - Course, Compass and proprietary C-Course heading selector - Rapid units selection: metric, nautical and imperial - Situational (non-navigational) map with color-coded speed track - Map display with target course and Look-Ahead-Vector (LAV) - Time and distance to autoscaled LAV endpoint - Velocity Made Good (VMG) relative to Waypoint - Magnetic compass and Course Over Ground (COG) integrated panel - Crab angle and local magnetic declination
TideView
Visualize ocean tides in 3D using augmented reality. See how water levels change now, in 12 hours, and even 80 years into the future. Predict potential flooding and understand the impact of global warming on coastal areas.
- Augmented reality tide visualization
- Predict tidal changes up to 80 years
- Global warming impact simulation
- AR aiming crosshairs for height analysis
- Uses NOAA data for tide stations
- Supports tide stations within 200 miles
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TideView is a unique AR App for the iPhone that allows a visual 3D appreciation of the tidal expanse. It enables you to interact with the flow of tidal water and to predict with limited certainty where sea water will appear now, in 12 hours and in 80 years! Like other tidal level Apps on the iPhone, TideView takes your current location and searches for the nearest tidal stations that support sea level reporting every 6 minutes. You choose a date, time and a station that best reflects the water level where you are currently standing. Find a location on the beach that is just at the sea water level and move the phone until it detects the horizontal plane of the beach. The next 12 hours of water levels will appear before you taking the beach as a baseline for the tide level at that location. An AR 3D arch of lines follows the water level above and below ground depending on where you are in the tide cycle. You can rotate the tide view or walk around it! A tide aiming crosshairs will descend when activated to the level of the iPhone camera lens allowing you to take aim at a location for analyzing heights at various tide levels. For example if you want to see if your kayak camping spot will be underwater at high tide! TideView gives you a unique window into the workings of global warming. It allows to to compensate for the increase in base water levels for the next 100 years. By adjusting the time-view you can change the base water level and see what affect it will have on your condo in Florida! This is a dynamic change which you can watch as you adjust it. The aiming sight then allows you to scope out what will be underwater at high tide when your grandchildren take over the condo fees. --Gets Data from best source: NOAA --Allows use of Tide Stations within 200 miles of your location --Allows use of current time Zone --Shows current High Tide, Low Tide and Levels --Dates for sea level rise 2020 to 2100 --Aiming crosshairs/ camera level reads feet below high tide line dynamically Disclaimer: Measuring tide levels is very inexact and depends on a host of local and other factors. Never depend on this App for making any important decisions in your life.
Screenshots
Verdict
The clearest difference is in-app purchases: TideView at none against tcSpeeds's 1. TideView also leads on iOS requirement (12.4 vs 16.6). tcSpeeds's advantage is ratings volume (10 vs 3). On price, rating, review sentiment and update cadence 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
Both are free to download. tcSpeeds sells 1 one-off in-app purchase. TideView asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for tcSpeeds against 5.0 for TideView. Both are backed by a comparable volume of ratings — 10 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
tcSpeeds ships an update every 7 months, TideView every 11 months. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.
| Parameter | tcSpeeds | TideView |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (10 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 10 — better | 3 |
| Update frequency | Every 7 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.6 | 12.4 — better |
| Further details — not scored | ||
| Size | 18 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | transitional continuum | Robert Werner |
Customer experience
tcSpeeds
TideView
In-app purchases
tcSpeeds
- Advanced Performance Features$2.99
TideView
No in-app purchases









