Three things to print, free and without signing up: a letter you can send home with your class, a times tables poster for the wall, and all the worksheets in a single PDF. Everything may be copied and passed on (CC BY-NC 4.0).
A letter to the families in your class: what you are practising, what the game costs (nothing), what data it collects (no personal data) and a QR code to the page. With space for the class, the date and your signature. In three versions: with a blank line for the topic, for the times tables, and for addition and subtraction.
The tables from 1 to 10 as a grid, with the eight jungle animals along the edge. Prints cleanly in black and white too. A small line with a QR code to the practice page sits at the bottom.
Every sheet for one year group in a single PDF with a cover page: Year 1, Year 2 and Years 3–4. One sheet per topic in the ink-saving version, no answer key.
Everything on this page is free for home and for the classroom. Licence: CC BY-NC 4.0 — print, copy and pass it on, but do not sell it. If you share something online, please link to this page. CC BY-NC 4.0
One sheet per station, with the animals as the reward: get all four questions for an animal right and colour in its star. Each sheet comes in an ink-saving and a colouring version.
Print one year group's pack and leave it out. The sheets explain themselves, need no preparation and no device.
The letter names both: the sheets to print and the game. Both are free, ad-free and entirely optional.
The poster stays up all year. A child who has forgotten a table looks up instead of guessing.
| Price | Free. No ads, no in-app purchases, no subscription. |
|---|---|
| Ages | 5 to 10 years, grades 1 to 4 |
| Math topics | Addition and subtraction to 10, 20 and 100 (with and without crossing ten), times tables 1 to 10, division |
| Learning | Adapts automatically: a path of small steps by school year, shaky facts come back more often. Parents can also choose the topics. |
| Devices | Android phones and tablets (Google Play), iPhone and iPad (App Store) |
| Internet | Not needed. Only the optional world leaderboard goes online. |
| Languages | English, German, Spanish, French, Italian, Dutch, Danish, Portuguese, Ukrainian, Filipino |
| Data | No account, no tracking. Progress stays on the device; the leaderboard only gets a made-up nickname and the metres run. |
| Made by | Sebastian Illing, an independent developer in Germany, first for his own children |
| Current version | 1.1.0, updated 2026-11-05 |
These facts describe the current version in the stores. The full privacy policy is at /privacy/.
In Number Jungle your child runs through the jungle and dashes through the gate with the right answer. The same problems, matched to their school year, with no ads and offline. Free for Android, iPhone and iPad.
More about the game →No. It is completely free: no ads, no in-app purchases, no subscription and no trial that runs out. Children earn coins by running and spend them only on outfits inside the game.
No. There is no sign-up, no email address and no account. Two children can share one device, each with their own profile.
Yes. The letter, the poster and the worksheets are CC BY-NC 4.0: copying, printing and passing them on is the point; selling them is not. If you put something online, please link to number-jungle.com.
Years 1 to 4 (Grades 1 to 4), roughly ages 5 to 10: addition and subtraction to 10, 20 and 100 with and without bridging ten, the times tables from 1 to 10, and division.
It runs on Android phones and tablets and on iPhone and iPad, and it needs no internet connection. Whether it may be installed on managed school devices is the school's or the trust's decision.
No. There are no analytics, tracking or advertising services. Only the optional leaderboard sends a made-up nickname and the metres run to a server at Cloudflare, and parents can switch it off.
Sebastian Illing, an independent developer in Germany who built the game for his own children first. The legal notice and contact details are on the site.
