Two taps on the map and you know how long that stretch really runs — measured along every bend, with discharge, gradient and time by kayak, SUP or on foot.
How long is that stretch of river you are about to paddle? Drop two pins and River Ruler measures the riverbed itself, following every bend instead of drawing a straight line.
You also get the numbers that decide a trip: where the river starts and ends, how much water it carries, how steep it runs, how winding it is, and how long the section takes by kayak, SUP or on foot.
• Measure any river section — along the real riverbed, not a straight line
• See the whole river, from source to mouth, with its total length
• Find rivers by name, or jump straight to coordinates
• Sinuosity, gradient, elevation drop, discharge, basin area, flow direction
• Travel time for kayak, SUP or walking
• Export as GPX for your GPS, KML for Google Earth, PDF or a ready-to-send image
• Saved log of your measurements
• Light and dark map styles
Built on open OpenStreetMap data. No account, no sign-up, no ads.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://docs.google.com/document/d/1yTks6ZXW39TOUheZfEf96e-T1cFWzF1eWik8Ax-9HAo/edit?tab=t.0
Заплатил, но мерить маршрут приложение не хочет, долго крутит загрузку и в итоге на мой плохой интернет ссылается. Чушь.
Developer Response
Hi! Thanks for the honest feedback. We're a young app and we keep making it better with every update. In version 1.2 measuring is noticeably more reliable: if the map server is slow, the app now retries automatically through another server, already-loaded data isn't re-downloaded, and wide rivers like the Mississippi need far fewer requests. You can get a refund anytime via Apple: reportaproblem.apple.com → "Request a refund". And after the refund, email us at tenkapp@proton.me — we'll gladly gift you a promo code so you can try 1.2 for free.Здравствуйте! Спасибо за честный отзыв. Мы только начинаем развивать сервис и с каждым обновлением стараемся делать его лучше. В версии 1.2 замер стал заметно надёжнее: если сервер карт отвечает медленно, приложение само повторяет запрос через другой сервер, уже загруженное не качается заново, а широким рекам вроде Миссисипи нужно куда меньше запросов. Возврат можно оформить через Apple: reportaproblem.apple.com → «Запросить возврат». А после возврата напишите нам на tenkapp@proton.me — с радостью подарим промокод, чтобы попробовать 1.2 бесплатно.
New
• The app now speaks eight more languages: Swedish, Danish, Finnish, Norwegian, Dutch, Polish, Czech and Traditional Chinese.
Improved
• Pins snap to the river. You no longer have to hit a narrow channel exactly with your finger.
• Wide rivers measure from the bank — the app widens its search until it finds the channel instead of saying there is no river nearby.
• The map recovers on its own after a network hiccup. Before, it stayed grey until you restarted the app.
Fixed
• Taking the free measurements offered on the purchase screen now continues your measurement. Your two points stay where you put them.
Version 1.4
The developer, Alex Pupko, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Identifiers
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Alex Pupko
Size
15.1 MB
Category
Travel
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.