@worldwise_app
Geography for iPhone

The whole world in your head.Three minutes a day.

Flags, capitals, and where every country actually is. All 197 of them, scheduled by a real memory engine so each review lands right before you'd forget.

Follow the build Soon on theApp Store
197 countries Works offline No account, no ads English & Deutsch
World map where every country is shaded by how well you know it World map in night colors, every country shaded by how well you know it
The ladder

Swipe. Answer. Locate.

Every country climbs a three-step ladder, and each step asks your memory for a little more.

Step 1 · Recognize

Swipe true or false

Is this Portugal? Right for true, left for false. Quick wins give your memory its first hook.

True or false
This is Portugal
True
Step 2 · Recall

Answer from memory

No flag to lean on anymore. The capital has to come from you.

Capital of Japan?
Kyoto
Tokyo
Osaka
Step 3 · Locate

Find it on the map

Tap the country on a blank map. Once you can place it, you own it.

Where is Chad?
The engine

Real spaced repetition.

Worldwise schedules every card with SM-2, the classic spaced-repetition algorithm. Answer well and the interval stretches; hesitate and it shrinks. Reviews arrive just before you'd forget.

One fact, thirty days

100 % 50 % 0 % 0 1 3 7 15 30 With review Without
Schematic, not user data. The review days 1 · 3 · 7 · 15 · 30 show how SM-2 stretches the gaps as a fact gets stronger.

Table equivalent: without review, recall falls from 100 percent on day 0 to about 24 percent by day 30. With reviews on days 1, 3, 7, 15 and 30, recall is refreshed to 100 percent each time and dips less between reviews, ending near 92 percent.

Progress you can see

Watch your world fill in.

Every session colors the map a little further. Five shades from first sight to mastered.

The Worldwise atlas: a world map with countries shaded across five mastery levels The Worldwise atlas at night: a dark world map with countries shaded across five mastery levels

Mastery

NewMastered
Your world47 of 197 countries

An example atlas, four chapters in.