# Number Sink — Multiply and divide fluently

> Multiply and divide fluently (iPhone/iPad app by NumberClub.)

- Source: https://appshunter.io/ios/app/number-sink/id6825320327 (this page in markdown: same URL + `.md`)
- Developer: [NumberClub](https://appshunter.io/developer/1843102274)
- Category: Education, Games
- Price: $5.99
- Age rating: 4+
- Requires: iOS 15.0 · 16 MB
- Languages: American English
- Released: 2026-11-02
- Data updated: 2026-11-02

## What is Number Sink?

A fast, absorbing game of multiplication and division that builds a real feel for how numbers are made, rather than a memory of isolated facts.

Numbered discs drift toward a black hole. Split a disc into its factors, or stick discs together to make new numbers, before they sink. Every move reveals something about how numbers fit together, so over time the times tables become a web of connections and number families rather than a list to memorize.

With over 300 levels, you'll have many hours of absorbing, fascinating number practice.

What you'll practice:
• Splitting numbers into factors from 2 to 12
• Building new numbers by combining others
• Getting to know multiples, factors and primes
• Times tables as patterns, not facts in isolation

• Up to 4 players on the same device
• No ads
• No data collected: everything stays on your device

As with all our games, our goal is to spark the huge amounts of mathematical thinking learners need to truly master the fundamentals of mathematics.

Made by NumberClub, whose math games are used in hundreds of schools.

## Is Number Sink safe?

Not enough ratings yet to assess Number Sink.

## Is Number Sink legit?

Number Sink appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Number Sink is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 4.2.1 — 2026-11-02

No release notes.

## More apps by NumberClub

- [Stick and Split](https://appshunter.io/ios/app/stick-and-split/id1512738668)
- [NumberClub Schools App](https://appshunter.io/ios/app/numberclub-schools-app/id1520360381)
- [Brick Up](https://appshunter.io/ios/app/brick-up/id6754166183)
- [Number Ramble](https://appshunter.io/ios/app/number-ramble/id6754166436)

All apps by NumberClub: https://appshunter.io/developer/1843102274

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-02.*