Klapp vs NIM Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Klapp
This app streamlines communication between schools, parents, and students. It facilitates message and file sharing, manages appointments and absences, and integrates video conferencing, replacing traditional paper-based communication methods.
- Private messaging and chat
- File sharing
- Appointment and absence management
- Calendar synchronization
- Integrated video conferencing
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Klapp is a simple and intuitive solution that simplifies and digitalizes the communication between school, parents and students. Klapp allows the transmission of messages and files in private messages or as a chat. School appointments and absence messages are clearly displayed in the calendar, which can also be synchronized with the local calendar app. Video conferencing is integrated into Klapp. Printed letters, chain telephones, information booklets, absence notification via phone and a clogged pinboard are a thing of the past.
NIM Master
Learn strategic thinking with a classic game of logic. This app offers an interactive board to practice winning strategies, with options to play against a computer or a friend. Enjoy fun sound effects and an engaging design that develops logical reasoning skills.
- Interactive game board
- Develop winning strategies
- Play against computer
- Logical thinking development
- Customizable win/loss conditions
- Sound effects and speech
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The NIM Master app introduces students to a simple game with a rich history and complex strategy for winning. The gameboard consists of three rows with 3, 5 and 7 beads in each row. There are two ways to play the game. The object can be to take the last bead or alternately, the object can be to force the other player to take the last bead. This app challenges the player to think about winning positions and to develop a strategy for keeping the winning position as the game is played. Playing the game involves sliding beads from the left side of the board to the right side (like an abacus or soroban). There is an option where the player can match wits with the computer. Special sound effects and synthesized speech make the game fun to use. The interactive design facilitates the development of logical thinking strategies. The gameboard is used to help students develop logical thinking skills. Beads are moved to the right by swiping. During a turn any number of beads can be moved but only from one row. The player who takes the last bead loses. Alternately, the game can be set so that the player who takes the last bead wins.
Screenshots
Verdict
The clearest difference is price: Klapp at Free against NIM Master's $0.99. Klapp also leads on rating (4.1 vs 1.0) and update cadence (weekly vs every 16 months). NIM Master's advantage is iOS requirement (12.0 vs 15.0). On ads and in-app purchases 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
Klapp is free to download; NIM Master costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Klapp holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Klapp has 21 ratings behind it against 1, so its average is the more settled of the two.
Klapp ships an update weekly, NIM Master every 16 months. The most recent releases landed on October 21, 2026 and June 20, 2026 respectively.
| Parameter | Klapp | NIM Master |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.1 (21 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 21 — better | 1 |
| Update frequency | Weekly — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 87 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Klapp GmbH | Ventura Educational Systems |
Customer experience
Klapp
NIM Master
In-app purchases
Klapp
No in-app purchases
NIM Master
No in-app purchases









