No revenue estimate for APPLE — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.
This course is based on a bestseller by the experienced coach Sergey Ivashchenko which became a sort of chess publishing sensation and sold over 200,000 copies. More than 1300 training exercises are intended for beginners, both children and adults. Elementary and simple tasks (1-, 2- and 3-way) are used as teaching material. This course is in the series Chess King Learn (https://learn.chessking.com/), which is an unprecedented chess teaching method. In the series are included courses in tactics, strategy, openings, middle game, and endgame, split by levels from beginners to experienced players, and even professional players. With the help of this course, you can improve your chess knowledge, learn new tactical tricks and combinations, and consolidate the acquired knowledge into practice. The program acts as a coach who gives tasks to solve and helps to solve them if you get stuck. It will give you hints, explanations and show you even striking refutation of the mistakes you might make. Advantages of the program: • High quality examples, all double-checked for correctness • You need to enter all key moves, required by the teacher • Different levels of complexity of the tasks • Various goals, which need to be reached in the problems • The program gives hint if an error is made • For typical mistaken moves, the refutation is shown • You can play out any position of the tasks against the computer • Interactive theoretical lessons • Structured table of contents • The program monitors the change in the rating (ELO) of the player during the learning process • Test mode with flexible settings • Possibility to bookmark favorite exercises • The application is adapted to the bigger screen of a tablet • The application does not require an internet connection The course includes a free part, in which you can test the program. Lessons offered in the free version is fully functional. They allow you to test the application in real world conditions before releasing the following topics: 1. Mate in 1 1.1. Rook checkmates 1.2. Queen checkmates 1.3. Bishop checkmates 1.4. Knight checkmates 1.5. Pawn checkmates 1.6. Mate in 1 2. Winning material 2.1. Gain a rook 2.2. Gain a knight 2.3. Gain a bishop 2.4. Gain a queen 3. Draw 4. Mate in 2 4.1. Double check 4.2. Queen checkmates 4.3. Rook checkmates 4.4. Knight checkmates 4.5. Bishop checkmates 4.6. Pawn checkmates 5. Sacrifice material 5.1. Queen sacrifice 5.2. Rook sacrifice 5.3. Bishop sacrifice 5.4. Knight sacrifice 6. How to proceed?
Trends
Price over time on the United States storefront, quoted in USD — from our own daily price tracking. Other markets are listed under "Price by market" in the Prices tab; they are not on this axis, because one line cannot be two currencies.
Showing the last 90 days (the review-based charts: the last 4 monthly points). Full history and CSV export come with a free account.
Related
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate.
Related
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| — | 0 | 0% | $2.99 | |
| — | 8 | 92% | Free | |
| — | 0 | 0% | Free | |
| — | 0 | 0% | $0.99 | |
| — | 7 | 71% | Free | |
| — | 0 | 0% | $0.99 |