Ask a well-traveled friend how many countries they have been to and watch them start counting on their fingers. Most people get stuck somewhere in the middle: the trip ten years ago, the day trip across a border, the country they only saw from a train window.

Here are three ways to get a real number.

1. Start with a map, not a list

Lists make you remember. A map makes you recognize. Open a world map and go continent by continent; neighbors jog your memory in a way a blank page never does.

The free countries visited map on stampsy.app works this way: tap every country you have been to and the counter adds them up out of 195 (the 193 UN members plus the two observer states). You can save the map as an image when you are done. No sign-up.

2. Decide what counts before you count

Every traveler argues about this, so pick your rules first and stick to them:

  • Airport layovers. Many travelers only count a country if they left the airport.

  • Day trips. Crossing a border for an afternoon usually counts.

  • Territories. Greenland, Puerto Rico and Hong Kong are not UN members. Some people count them separately, some fold them into the country that governs them.

There is no right answer. What matters is that your number means the same thing next year.

3. Let your photos remember for you

The trips you forget are almost always in your camera roll. Most phone photos carry the place and date they were taken, which is exactly what you need to rebuild a travel history.

That is the idea behind Stampsy, the app we make: it reads only the place and date of each photo, on your phone, finds every country you have been to, and gives you a passport stamp for each one. Your photos never leave your phone. The first scan is free.

The same trick works closer to home

If you live in the US, the same two questions come up for states and national parks. There is a free states visited map that counts out of 50, and a national park checklist with all 63 parks on one map that you can print.

However you count, write the number down. It is a lot more fun to watch it grow when you know where you started.