KnowWake vs TandemGPS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KnowWake
This marine navigation platform offers detailed waterway information for numerous global locations. Discover waterfront destinations, access real-time community reports on hazards and marine life, and utilize advanced navigation features for a safer and more informed boating experience.
- Waterfront destinations
- Real-time waterway reports
- Wake zone indicators
- Marine weather forecasts
- Anchor alarm
- Location sharing
- Offline mode
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KnowWake is a FREE marine navigation platform packed with waterfront destinations in the United States, Canada, Caribbean, Mexico, South Africa, United Kingdom, parts of Europe, Arabian Peninsula and NOW all of Australia and New Zealand!! Salt and freshwater points of interest include 50,000+ VERIFIED: restaurants, marinas, fuel docks, yacht clubs, lodging, vessel services, dive shops, boat ramps, dive & snorkel areas, bridges, locks, popular spots, town docks, anchorages, inlets and more! KnowWake also uses real-time waterway reports from the community to see and share things like hazards, marine life, police and other important information. Features include: · Wake zones - Simplified, color-coded waterways · Marine Weather Suite - Current and forecasted marine conditions · NAVAIDS - Navigation Channel Markers, Buoys & Beacons · Anchor Alarm - Get notified if your vessel moves outside of a predetermined area · Virtual Dive Flag - Alert other vessels of swimmers in the water · Routing - Point to point waterway routing with distance to location · Depth - See depth based on current NOAA bathymetry charts · Location sharing - Share location with a single person, group or everyone · Vessel Tracks - Leave tracks along the way to see or share later · Offline mode - Use KnowWake anywhere, even with bad network service · Augmented Reality - See what's ahead including all KnowWake points of interest · Safety First - An SOS button, Safety Checklists and Float Plan generator Sharing with friends is easier than ever. Simply click the share button on any point, route or favorite location and choose who you want to share it with - This feature is perfect to retrace steps, show friends how to get somewhere or just share your adventures. Adding to the chart helps everyone. Whether posting a waterway report, adding a missing point or updating an existing one, you can help keep the chart current with local knowledge. Thank you to everyone helping keep the chart updated and we'll see you on the water soon!!
TandemGPS
This navigation app offers a unique, non-intrusive way to display speed data using light signals. It allows for customizable ride experiences, group sharing of routes, and detailed ride management, prioritizing driver safety and reduced screen interaction.
- GPS-based speedometer
- Light-Spectrum Signaling (LSS)
- Customizable ride environment
- Group ride sharing
- Ride management and saving
- Biker-influenced navigation
- Dash-less speed data
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TandemGPS, the first GPS-based speedometer app, provides real-time speed data using integrated Light-Spectrum Signaling (LSS). Designed as a safety tool for all drivers, TandemGPS offers a safe and non-intrusive alternative to traditional numeric readouts. TandemGPS sends speeds as user-defined light signals from devices. When used in combination with Motorcyclists’ skill-based customizations, TandemGPS’ unique interface tools address a fundamental safety challenge: maintaining safe eye-contact with the road. By providing customizable navigation conditions in a user-influenced app environment, TandemGPS empowers users to tailor their riding experience to their skill level, driving environment, weather conditions, and commutes. Each ride is saved with a unique filename and can be managed through the in-app Rides Manager. TandemGPS also allows users to create location-based rides using its link interface. This digital connection establishes a speedometer-based ride with a mapped location. This feature is particularly useful for Motorcyclists who travel in groups and want to share user-created navigation options to guide their trip. By integrating TandemGPS’ LSS signaling with user-specific monitoring and alerts, the potential safety advantages of this technology are further enhanced through continued use. TandemGPS offers: • Group Management for Member-to-Member connectivity • Ride Management for saved, user-defined Tandem Speedometers and Map files • A Member-to-Member Communication Service that allows them to share saved Speedometers and Map files • A Biker-influenced Navigation Environment with three independent Map styles • A state-of-the-art signaling technology that provides dash-less speed data through any mobile device. • An App with minimal user-prompts, physical screen engagements, and reduced eye-to-screen demands . • User-defined Speedometers and Maps are saved as Rides and, such, allow custom speedometers to be digitally linked to specific geographical locations with start and stop points. • Maps include toggles to control APIs on the fly. One-touch On and one-touch Off of: • 3-D Map View • Voice Navigation • Traffic • Screen Navigation • Map Screen toggles switch saved speedometers and tracking modes with one click. • “Always On” Top Speed displays every time you stop, on all three Map screens. As a Safety-first environment, TandemGPS provides security measures that leave essential controls to the Users. Such as: • Members can only be added to Groups who have personally shared their profile email with another verified Member. • Shared Speedometers and linked-Map files can only be shared to Groups of verified Tandem Members. • Members can also view the Groups that they are Members of, but do not Manage, in their own directories. • Any Member, of any Group, can remove themselves, quietly, from any Group without cross- app permissions and engagements. • Shared files include the username and City of the Creator of the Tandem Speedometer or Map, to augment the familiarity to known Members of the Group, or Groups. Set up travel styles that meet your daily driving needs, road trips, or for your weekend sport rides. Save speedometer styles and trip data using the in-app Rides Manager.
Screenshots
Verdict
The clearest difference is rating: TandemGPS at 5.0 against KnowWake's 4.1. KnowWake's advantage is ratings volume (250 vs 1). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
TandemGPS holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: KnowWake has 250 ratings behind it against 1, so its average is the more settled of the two.
KnowWake ships an update every 11 days, TandemGPS every 2 weeks. The most recent releases landed on September 24, 2026 and June 1, 2026 respectively.
| Parameter | KnowWake | TandemGPS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (250 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 55.3% of reviews | — |
| Number of ratings | 250 — better | 1 |
| Update frequency | Every 11 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 123 MB | 53 MB |
| Age rating | 4+ | 17+ |
| Developer | Application Generation, Inc | Tandem Enterprises, LLC |
Customer experience
KnowWake
TandemGPS
Bugs and requests
KnowWake
Reported bugs
14 issues- App crashes immediately upon opening
- App freezes after 30 seconds of use
- Login/registration fails or times out indefinitely
- Routing returns error messages and crashes
- Tapping on location icons does nothing or crashes app
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- Filtering options don't work (removed items still appear)
- Depth chart feature returns 'error tap on water area' message
- Freshwater/saltwater detection incorrect
- NOAA overlay charts work once then fail
- Vessel picture change causes symbol display issues
- Buoy recognition inconsistent (only recognizes one random buoy)
- Contact form CAPTCHA rejects valid input
- App won't load or appear in app list after download
- Force closing and random shutdowns
Requested features
12 requests- Improved stability and crash prevention
- Course-up/heading-up map orientation option
- Depth layer integration for navigation safety
- NOAA raster charts availability
- Better routing algorithm with estimated time and distance
Show 7 moreShow fewer
- Ability to save multiple vessel profiles
- Layer on/off toggle functionality
- Bridge information with contact details and height specifications
- Water amenities for canal boaters (water points, Elsan disposal, pump out sites)
- Improved filtering system that actually works
- Better icon explanations or legend
- Expanded lake coverage in central Florida and other regions
TandemGPS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
KnowWake
No in-app purchases
TandemGPS
No in-app purchases









