Sygic Travel Maps might be a bit more popular than Metafact. We know about 1 link to it since March 2021 and only 1 link to Metafact. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Just please ask someone with specific knowledge of these things before you embark on them. Check Wikipedia, it is very peer reviewed when it comes to science based information. Try out metafact as well. Remember just because something has someone with letters before their name (Dr) or qualifications under their belt, still check out the person, a vaguely connected qualification from 40 years ago doesn't hold a lot... Source: about 3 years ago
I've been using Sygic Travel from the Czech Republic and really like it. It doesn't use Google Maps, but you just press the location on the map, click add, then it autosorts to give you an optimized itinerary (like yours does) and spits out the itinerary. I think your biggest issue is being cost competitive. I paid $7.99 once for Sygic Premium (I think it's $9.99 now), so $19.99/month is an entire tier higher in... Source: almost 2 years ago
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