Tag Archives: geography

New app: Flags Quiz – World Continents

After a long pause, we are excited to present a new app called Flags Quiz – World Continents.

“Download
Get it on Google Play

This app continues our geography quiz series.

The English description of the game is the following:

This is the best opportunity to learn all important flags of the countries and territories of the Earth.
They are divided into 6 groups:
1) Europe (62 flags)
2) Asia (53 flags)
3) North and Central America (38 flags)
4) South America (13 flags)
5) Africa (56 flags)
6) Australia and Oceania (24 flags)

Each continent provides several distinct learning modes:
1) Spelling quiz (easy and hard)
2) Multiple-choice quiz
3) Time Game (give as many answers as you can in 1 minute)
4) Flashcards

This app is translated into 16 languages.

Learn all flags from Afghanistan and British Virgin Islands to Wales and Zimbabwe!

*****
As you can see, the gameplay was substantially improved comparing to our previous apps. Now you can earn stars for completing each quiz mode for every continent. Australia and Oceania is especially challenging. Flashcards provide a learning and training opportunity.

Acknowledgements:
icons for buttons were downloaded from iconmonstr or were created with Font Awesome.

Thanks!

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Cities of the World

My first app of 2015—Cities of the World—continues my successful series of Geography Apps and is translated into 15 languages. It has been released for both platforms:

“Download
Get it on Google Play

The English description of the game is the following:

Guess and spell the names of the 100 most famous cities of the world using the pictures of their landmarks (New York, London, Beijing and so on).
– You won’t get stuck if you don’t know the answer because the app allows you to guess each word letter by letter and will immediate show if the next letter is incorrect!
– The cities are arranged in the order of increasing difficulty and are divided into two levels. If you think that the first questions are too easy, just proceed forward until you encounter really hard ones.
– Two quiz modes: 1) for those who like spell city names and 2) for those who prefer to choose from 4 answers.
– Very entertaining learning experience for all geography and traveling fans!

This app is translated into 15 languages: English, German, French, Spanish, Portuguese, Italian, Russian, Swedish, Dutch, Danish, Norwegian, Japanese, Chinese, Korean, and Turkish languages.

*****

Acknowledgements:
icons for buttons were downloaded from iconmonstr or were created with Font Awesome.

Thanks!

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My Best Apps of 2014

In the end of the year, I would like to share some of my data and assign “Best Apps” in Geography and Chemistry categories.

I will remember 2014 as the Year of Quizzes. Since Hydrocarbons appeared on iOS on January 31, I have released more than 40 distinct quizzes. In September, most of them were published on the Google Play Store as well. And these quizzes were much more successful than my first apps released last year. So far I have 578k downloads for iOS and 215k downloads for Android. Total earnings are well higher $20k.

Geography

The most profitable iOS app: 50 US States – $4k

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The most downloaded iOS app: European Countries – 55k

“Download
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The most profitable Google Play app: Swiss Cantons – $650

“Download
Get it on Google Play

The most downloaded Google Play app: Capitals of the World – 38k

“Download
Get it on Google Play

Chemistry

The most profitable and most downloaded iOS app: Inorganic Acids – $800 and 31k downloads

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Get it on Google Play

The most profitable Google Play app: Chemical Substances – $66

“Download
Get it on Google Play

The most downloaded Google Play app: Functional Groups – 14k

“Download
Get it on Google Play

So it’s clear that Geography is more popular than Chemistry and it’s likely that I’ll continue moving in this direction. A funny fact for me is that the most promising app of recent months Flags of the World hasn’t won in any of 4 categories. Let’s see how it will change in 2015!

“Download
Get it on Google Play

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Provinces of Turkey

I was asked to prepare an app about Provinces of Turkey. I agreed because it was an excellent opportunity to get a translation into Turkish that can be potentially used in my other apps and the Turkish app market is going to grow.

The English description of the game is the following:

Learn all 81 provinces of Turkey: from Istanbul and Ankara to Erzurum and Van.
There are 4 different quiz modes about:
* names of all Turkish provinces
* their location on the map of Turkey
* two-digit province numbers (license plate codes)

Become an expert in geography of Turkey!

This app is translated into Turkish language.

*****
Now I am mostly doing updates for my previous apps. When Apple releases a new iOS, the review process is usually slow. This app has waited for review for 11 days. Meanwhile, the Google Play version was published:

Get it on Google Play

Acknowledgements:
I am grateful to Mert for his idea of this app and for his translation into Turkish. It is a quite difficult language, and I wouldn’t be able to translate the app myself using Google Translate.

Icons for buttons were downloaded from iconmonstr or were created with Font Awesome.

Thanks!

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Financial Report – September 2014

All important apps have been rewritten for Android and now I have 46 apps on the Apple App Store (iOS) and 38 apps on the Google Play Store (Android).

Here is my income from Jan 2014 (about $15.5k so far):

In January, I was earning on average $3.5 a day. Since August 20, my daily income haven’t fell below $150 / day. Total income in August is $4,198. This amount is comparable with my salary that I had 2 years ago as a chemistry postdoc at Berkeley.

75% of money are from showing ads and only 25% from sales and in-app-purchases (next week, all my apps can be downloaded for free).

The most profitable are Geography apps, such as:

50 US States (iOS, Android) $2,532 (16.5% of total income).
European Countries (iOS, Android) $2,098 (13.6%).
Flags of the World (iOS, Android) $1,448 (9.5%).

Localization into 9 languages was a very clever decision. United States accounts for 28.4% of total income, Germany 10.9%, Russia 8.8%, France 6.7%, and so on.

The Google Play store is very different from the Apple App store in download trends, search optimization and algorithms. By now, the income from Android apps is just $15.29 but it is constantly growing and I’m just in the beginning of understanding this platform.

Many thanks to everyone who supports me. I will be glad to answer your questions and hear your suggestions how to improve my apps.

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Filed under Android, Developer Blog, Finance, Geography

Important Geography Apps on Android: Flags of the World, 50 US States, and European Countries

Three geographic apps that are performing very well on iOS (my top three apps of August in terms of income) are now available on the Google Play Store. And they are absolutely FREE, without in-app-purchases and questions / modes closed behind paywalls.

Flags of the World (Android)
Get it on Google Play

50 US States (Android) got a new mode Time Game. And all questions are free now.

Get it on Google Play

And finally, European Countries (Android) with a new neater icon.

Get it on Google Play

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Capitals of the World

Capitals of the World is the third part of my “compilation” apps (after Flags and Maps) on the World geography. For 32 capital cities, I have added the pics to make the app more colorful.

The English description of the game is the following:

Guess the capital cities of all 197 countries in the world! Choose the game mode and find the capital of your country:
* Spelling quizzes (easy and hard)
* Multiple-choice quizzes – “challenges” (also easy and hard)
* Time game (give the most answers in 1 minute)

*****
Acknowledgements:
icons for buttons were downloaded from iconmonstr or were created with Font Awesome.

Thanks!

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Maps of All Countries of the World

Maps of All Countries of the World is the logical continuation of Flags of the World and is a compilation of country maps from my previous apps. Now all maps are available for free in one app.

The English description of the game is the following:

Guess all 197 countries of all continents by their outline maps! Choose the game mode and find the map of your country:
* Spelling quizzes (easy and hard)
* Multiple-choice quizzes – “challenges” (also easy and hard)
* Time game (give the most answers in 1 minute)

*****
Acknowledgements:
icons for buttons were downloaded from iconmonstr or were created with Font Awesome.

Thanks!

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Dutch Provinces

Dutch Provinces or Provinces of the Netherlands is my latest app about the regional geography. It wasn’t on the top of my to-do list when I received a request to do an app about Netherlands from a person who liked my other apps. It was about three weeks ago and I was happy to create such an app and receive some help with translations into Dutch.

The English description of the game is the following:

Learn all 12 Provinces of the Netherlands (from Friesland to Zeeland) and 3 Public bodies in the Caribbean Netherlands (Bonaire, Sint Eustatius, and Saba):
* names
* maps
* capitals
* flags
* coats of arms

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The app itself was pretty straightforward to prepare using my previous apps as a template. However, once it was submitted and approved, I discovered a small but potentially annoying bug in several of my geography apps. I postponed the release of this app and prepared the updates for it and 8 other apps (they’ve been already approved and since it’s merely bug fixing I haven’t written separate posts about these updates). Finally, this morning the version 1.1 of Dutch Provinces passed the review and I make it available on the App Store. Enjoy!

Acknowledgements:
I thank Mert for the idea of this app.

Icons for buttons were downloaded from iconmonstr or were created with Font Awesome.

Thanks!

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Swiss Cantons

I wanted to release the Swiss Cantons app before the Swiss National Day (August 1). But the app was rejected yesterday for its too long title. I cut it down and the app was approved and released today, on August 1 in the US but already on August 2 in Europe.

The English description of the game is the following:

Learn all 26 cantons of Switzerland – from Zürich and Basel-Stadt to Geneva and Lucerne:
* names
* maps
* capitals
* coats of arms / flags

*****
Acknowledgements:
icons for buttons were downloaded from iconmonstr or were created with Font Awesome.

Thanks!

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