Revised review: High cost of expiring $$ charts
I used iNavx for a great lakes coastal race and it was a great tool. The ease of tracking your course, generating a log, measuring distances, creating routes made this a great tool.
Some things Id love to see: Ability to arrange the displays on the instrumentation page (not just pick what shows), a "jot" layer over the chart where you can scribble while you plan & measure, ability to show some instrumentation on the chart page, tools to help with "what if" course planning (i.e. alternative routes and possible ETA to waypoint using GRIB or provided data).
This is a great app -- the overall rating is driven down by unfair complaints about the cost of additional maps; something they cant control. For coastal sailing in the Great Lakes the free NOAA maps work fine as long as youre not heading into a Canadian harbour. No one expects their Garmin GPS to come with free maps for the world.
REVISED REVIEW: SEPTEMBER 2016-- The functionality hasnt changed. Thats good and bad. Good, because it works, bad because there has been no progression (i.e. no Apple Watch support to show COG, BTW, VMG). The *biggest issue* is the maps. You pay top dollar for maps, but they are for only one year. So your up front costs are iNavX PLUS $70 or $140 or more annually for you charts. While they still work after a year, if you get a new device or (like me) had them just disappear after an OS upgrade, youre out of luck. Pay again. They blame the map publishers, but I think that the source of the issue is X-Traverse, their exclusive map partner. I also believer that they intentionally purge maps after OS upgrades or when restoring from a backup to ensure that you need to keep your subscription running. Look to other navigation apps where you get highly detailed charts for a small annual fee as opposed to iNavXs giant annual fee.
barthrh about
iNavX: Marine Navigation, v5.0.2