Tag Archives: chemistry

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

“Download
Get it on Google Play

The most downloaded iOS app: European Countries – 55k

“Download
Get it on Google Play

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

“Download
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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Amino Acids v. 1.3


Get it on Google Play

Review of the app on the Pulse of Apps: http://pulseofapps.com/smotrovaya/147 (in Russian)

Following the improved Android version, I updated the iOS version of Amino Acids. Major changes are:
– All flashcards are available for free
– The new “Challenge” mode (multiple-choice questions about all 43 compounds)
– Swedish localization
– The updated app icon

The app is free until the end of this week, so hurry to download it and enjoy the new game mode.

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Chemical Substances

While I am busy with Android, my 47th iOS app Chemical Substances has been approved (after 10 days waiting for review). This is the collection of quizzes on 200 most basic chemical substances: both organic and inorganic. With the beginning of an academic year, I see the growing interest to my chemistry apps.

The English description of the game is the following:

Learn 200 chemical substances that are studied in introductory and advanced chemistry classes:
* systematic and trivial names
* structures and formulas
* organic, inorganic, and organometallic compounds
* two different quiz modes
* 100 easy and 100 difficult chemicals

*****
And it appears simultaneously on the Google Play:
Get it on Google Play

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

Thanks!

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Hydrocarbons and Amino Acids on Android

I continue adding my apps to the Google Play. Recently, two chemistry apps appeared there: Hydrocarbons (Android):
Get it on Google Play

and Amino Acids (Android):
Get it on Google Play

They are not the exact copies of their iOS counterparts. There are several major improvements:
1) There are no IAPs: all questions in Hydrocarbons and flashcards in Amino Acids are available for free. And both apps are free as well.
2) There are new multiple-choice modes that cover all compounds and provide a nice variety to the existing letter quizzes.
3) Both apps are brought to the latest standards of my quizzes: 14 letters, scalability of all elements, a different layout of the main menu.
4) There were multiple fixes and changes in localization, icons, and so on.
5) In my all Android apps, the language can be chosen in the game Settings rather than in the device Settings that is much more convenient and looks very nice.

The same updates will come to iOS in due time. All other quizzes will be added to Google Play soon. I am updating the corresponding parts of this site and I am always glad to hear your suggestions and ideas about my apps.

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Inorganic Acids v. 1.3 – All questions for Free

It is the third time I update Inorganic Acids and Polyatomic Ions. The major change is the possibility to open the third group of questions (“Honor”, “Difficult”) by giving 200 correct answers in other modes rather than by purchasing the IAP. In my new apps, I rarely close any content behind the pay-wall and I’m going to reduce the paid content in my earlier apps as well.

Several changes in design to bring this app to my current standards took place as well. However, there are no new languages (I mean Dutch): this is the most laborious of all my apps in terms of localization.

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Steroids

After geography apps, I briefly return back to chemistry with Steroids. They were the subject of my undergraduate studies and I suspect that it will be the most difficult topics among all my apps.

The English description of the game is the following:

Steroids are an important class of natural products with various biological functions: hormones (estradiol, testosterone), vitamins (vitamin D3), lipids (cholesterol). This app is designed for chemistry, biochemistry, and pharmacy students. It provides you with a convenient tool to get acquainted with chemical formulas of the most important natural and synthetic steroids. Many of them are top-selling drugs used for a treatment of asthma, baldness, prostate cancer, and as oral contraceptives.

* 40 steroid structures
* flashcards
* a multiple-choice quiz
* a spell-the-name quiz

*****

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

Thanks!

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Functional Groups

Functional Groups had to be my first organic chemistry app. The topic is so general and fundamental for everyone studying organic chemistry. However, it is published only now after several apps devoted to specific classes of compounds: Hydrocarbons, Carboxylic acids, Heterocyclic Compounds, and Amino Acids.

The English description of the app is the following:

The most important app for organic chemistry students includes 80 functional groups, the classes of organic compounds (hydrocarbons, ethers, esters, etc.) and natural products (amino acids, carbohydrates, lipids, etc.). Take a quiz or use flashcards for memorizing them. Start from the basic groups and proceed to the advanced topics.

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The app has four sets of questions and a flashcard mode. The mode called “Difficult” should actually be quite easy for a college student majoring in organic chemistry, not saying about PhD organic chemists. I included only 80 classes of organic compounds and natural products and I can easily propose 80 more important classes. It means that I have a lot of opportunities for the updates and all suggestions and comments are always welcome.

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

Thanks!

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Amino Acids v. 1.2

For quite a long time, I didn’t like the app icon of Amino Acids Structures and Names. It was too dark and the spacial formula was hard to comprehend that it is cysteine. So I decided to prepare this update with a new app icon (proline has three-letter abbreviation Pro) and some other improvements in design and localization. I can’t say that I’m completely satisfied with the resulting icon. The formula could be a bit larger, especially its labels. Maybe I’ll update Amino Acids again, but not now.

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Inorganic Acids v. 1.2 – Minor Corrections

I was not very careful sending the previous update of Inorganic Acids and Polyatomic Ions. Now everything is fixed and the app looks and works exactly as I wanted. Enjoy!

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Carboxylic acid – Ester and Salt Names – Organic Chemistry Quiz

The app Carboxylic acids was released on Monday together with Greek Letters and Alphabet 2 and it was featured as a new free app in the Games/Word category for a couple of days. I got 250 downloads yesterday that is very good for so specific topic. Well, if people in Apple like “smart” apps, I’m ready to create many apps about different chemistry topics. We’ll see.

The English description of the app is the following:

Carboxylic acids and esters are one of the most important classes of organic compounds. They are everywhere:
* in food (citric acid; vinegar = a solution of acetic acid);
* in drugs (aspirin = acetylsalicylic acid);
* in fats (triglycerides are esters of fatty acids and glycerol);
* in plastics (polyesters);
* in biochemistry (transformation of pyruvate through the citric acid cycle);
* and even in ants 🙂 (formic acid)

Learn structures and trivial names of 50 most important carboxylic acids and their esters and salts.
* Aliphatic saturated acids
* Unsaturated and substituted acids
* Di- and tricarboxylic acids
* Aromatic acids

* pKa values of all acids!

*****

All modes are available for free (though all flashcards require in-app-purchase), but one has to give a certain number of correct answer in first modes to open the next ones.

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

Thanks!

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