Calculuz vs Koski
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Calculuz
A challenging math puzzle game where you fill in missing numbers in formulas. Progress through increasing difficulty levels, use power-ups, and compete for high scores. Tests arithmetic skills with timed challenges.
- Fill missing numbers in formulas
- Progressive difficulty levels
- Timed challenges
- Power-ups available
- Highscore lists for competition
- Multiple formula collections
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Calculuz is an engaging and challenging math puzzle game that requires players to use their arithmetic skills to fill in missing numbers in a given formula. The game is organized into different formula collections, with each collection containing a series of formulas that increase in difficulty. Players progress through the collections by filling in the missing numbers in each formula correctly. The game mechanics are simple but effective, with players using the available numbers on the board to complete the formula. To increase the challenge, the game gradually increases the size of the board and the range of numbers available as players progress through the collections. Some formulas also have a time limit, which adds an extra layer of difficulty and encourages players to think quickly and strategically. Calculuz also features power-ups and highscore lists, which add an extra element of excitement and competition to the game. Players can use power-ups to reveal the numbers they can use to complete a formula successfully, while highscore lists allow them to compete against others and strive for the top spot. Overall, Calculuz is a fun and challenging math puzzle game that is sure to test players' arithmetic skills and keep them engaged for hours on end.
Koski
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Match. Beat. Repeat. And learn a new language that way! Koski is a unique multi-language card game for kids and their parents, which uses memorization techniques to enable language learners to get more from their learning experience. Rules of Koski are as simple as that! Match images with their designations in primary and target (learning) languages to form a pair first, along with the final triplet afterwards. Player with more triplets in their shelf wins the game! You only have 60 seconds on your turn to do that before your rival steps in… Phew, good thing is that there are several rounds! Before you start, primary and target (learning) languages are to be selected and then brace yourself for outstanding card-game learning experience! Did someone say... difficult? Decide upon the difficulty level, which suits you best: elementary level to learn new words from scratch, mid level to practice at a moderate pace or nightmare-hard level to master your knowledge. With 5+ languages available, you can learn new words from preferred topical decks in a playful way. Play with your family members and friends in a private room, other random players or even all-mighty bot, which seems to know anything and everything! Beat all your rivals and be the first one on the rating board!
Screenshots
Verdict
The clearest difference is in-app purchases: Koski at none against Calculuz's 7. Koski also leads on ads (none vs shown). Calculuz's advantage is iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Calculuz sells 7 one-off in-app purchases. Koski asks for nothing beyond the download.
| Parameter | Calculuz | Koski |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 6 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 82 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Bad Rhino ApS | Intellectual Ideas OU |
In-app purchases
Calculuz
- 10 lifes$0.99
- 25 lifes$1.99
- 50 lifes$2.99
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- 100 lifes$5.99
- 250 lifes$9.99
- 500 lifes$17.99
- 1000 lifes$22.99
Koski
No in-app purchases









