River Thames Guide Lite vs Canal Maps
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
River Thames Guide Lite
This app provides a comprehensive guide and planner for navigating the River Thames and Wey Navigation. It features an interactive map, journey planner, lock and bridge details, and boating advice, all accessible offline.
- Interactive offline river map
- Journey planner with distance and time
- Detailed lock and bridge information
- Boating rules and emergency guidance
- Weather forecasts for locks
- Current river conditions
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This Lite version of River Thames Guide can still be downloaded and used but will no longer be enhanced; to continue to enjoy app developments please install the full version of River Thames Guide (copy and paste this link into your browser: https://apps.apple.com/app/id617269104 or visit the app support site which also describes es how to use the web based version of River Thames Guide). The complete planner and guide for travel and leisure on the River Thames (from its source to the Thames Barrier) and the Wey Navigation including where you can go, how you get there and what’s on the way - includes these key features: Thames Map and Guide: •Interactive River Map: self-contained - no internet connection needed •Journey Planner: time (at 5, 3 , 1 mph), distance and number of locks between any two of 102 River Thames points (45 on Wey) •Locks: need to know detail on every lock •Bridges: headway in metres and feet •River draught (depth of water) •Weather and other conditions for each lock •Current river conditions (non-tidal and tidal) Boating Advice: •Rules for the River •Preventing Problems •Emergency Help and Guidance (RNLI approved) INTERACTIVE RIVER MAP: pinch or squeeze to zoom to the required level of detail. Add any combination of locks, moorings, boatyards, fuel, marinas, pubs, restaurants, lodgings, sanitation, fishing, emergency RVP and/or bridges; tapping any icon pops up further details including phone number, post code, maximum stay etc (where available). JOURNEY PLANNER: select a starting point and destination from the supplied list of 102 landmarks (including locks, marinas, moorings, bridges and places of interest (from Lechlade to the Thames Barrier) and immediately see the sailing distance, direction (up or downstream), sailing time (at 5 mph, 3 mph and 1 mph) and the number of locks to transit to complete your journey; Wey navigation planner features 45 locations. LOCK FEATURES: every Thames lock is listed in order from Cricklade Bridge to Teddington with distance to next lock both up and downstream. Touch any lock to see much more information including: telephone number; post code; lock type; width, drop and length; lock keeper’s hours; facilities available (such as WC, water, pump out etc). From the lock detail just tap to highlight this lock in the middle of the interactive map. Portage Maps for Sonning to Teddington locks. BRIDGE HEADWAY: every bridge listed in order with headway in feet and metres; bridge headways are colour coded for ease of use and instant check to see if you need to lower any masts. All the above features are built-in so are available even without an Internet connection. WEATHER: select any lock for an up-to-date weather forecast for today and tomorrow (includes temperature, winds, humidity, visibility, sunrise and sunset). Requires an Internet connection. The weather popup includes the current nautical twilight (the correct time to strike your ensign). CURRENT RIVER CONDITIONS: for safer river use always verify the current official conditions before setting off; non-tidal conditions are provided by the Environment Agency (the River Thames authority) and categorised as Red, Yellow or Green – tap to view an explanation of the colours. Tidal conditions are provided by the Port of London Authority. Requires an Internet connection. Includes current and planned river closures and river restrictions. IN CASE OF EMERGENCY: River Thames Guide includes an SOS section with information, endorsed by the RNLI, on how to deal with various problems including: Man Overboard; Boat Sinking; Boat on Fire; Boat Drifting. HELP: every page contains tips on using River Thames Guide to help plan your journey, find somewhere to eat or stay, using the map, and more.
Canal Maps
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Canal Maps is an offline-first navigation app for the UK's inland waterways. Browse detailed maps of major canals and navigable rivers, find points of interest along your route, and keep your bearings — with or without a mobile signal. Features: • Detailed maps of UK canals and navigable rings including the Avon Ring, Cheshire Ring, and more • Points of interest: locks, bridges, pubs, wharves, marinas, services, and visitor moorings • Photos for canal points of interest • Search for specific points of interest by name • Canal traders and fuel boats near your route • My Places: save your own private points of interest with custom icons • Your GPS position shown live on the map — all data processed on-device, never transmitted • Works offline after initial data download Whether you're planning a narrowboat holiday or already on the water, Canal Maps keeps the information you need close at hand.
Screenshots
Verdict
The clearest difference is update cadence: Canal Maps at fortnightly against River Thames Guide Lite's monthly. On price, ads, in-app purchases and device support 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.
River Thames Guide Lite ships an update monthly, Canal Maps fortnightly. The most recent releases landed on November 6, 2026 and November 13, 2026 respectively.
| Parameter | River Thames Guide Lite | Canal Maps |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 92.9% of reviews | — |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 184 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeff Maynard | DAVID ANTHONY FLOYD |
In-app purchases
River Thames Guide Lite
No in-app purchases
Canal Maps
No in-app purchases
Questions
Is River Thames Guide Lite free?
Is Canal Maps free?
Do River Thames Guide Lite or Canal Maps have ads?
Which is updated more often, River Thames Guide Lite or Canal Maps?
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