A question I wanted the answer for AppbotX recently was : "Which languages should I localize apps into?".
After a bit of Googling I couldn't find answers with data to back it up, nor could I find much good data around where apps are being used.
So I turned to the Appbot data to see where reviews are coming from. I believe there would be a good correlation between usage and number of app reviews left.
Looking at the last month (approximately 1 million reviews for 34,000 iOS apps) here was the top countries and their major languages:
Collating that together I got:
You really should localise to English and Chinese (Simplified and Traditional), this will get you 53% coverage by my numbers.
Next look at Japanese, Spanish, French, German, Russian, Portuguese and Korean, this will get you to almost 85% (probably even higher, I didn't look at all the countries of in long tail countries, many more of them probably also speak these languages).
I didn't take the time to look beyond these top languages, but some other languages like Thai, Turkish, Dutch, Swedish, Malay, Danish, Vietnamese etc (this list could get really long) will help you get closer to 100%.
If you are looking to localize I have always been happy with ICanLocalize.
Did I miss anything? Let me know on Twitter.
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