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Numerus

Train oral comprehension of numbers in foreign languages with real speech clips.
Oral comprehension of numbers in foreign languages can be challenging. Here’s why:

1. Frequency of numbers in ordinary discourse is usually low, so learners struggle to develop a habit of listening to numbers.
2. Most words are easy to recognize due to context, whereas numbers are isolated. For example:
With a population of 8 804 190, New York City is the most populated city in the US.
The context helps only a little: you can guess millions, but thousands are essentially random.
3. Some languages construct numerals differently. For example, how to say 95:
English: ninety five (90 5)
German: fünfundneunzig (5 and 90)
French: quatre-vingt-quinze (4-20-15)

The best way to train comprehension is frequent exposure to numbers in real speech. This app provides that:

1. A random 10-second clip from a video plays and repeats.
2. The user types the number they heard and taps “check”.
3. Subtitles appear and the app shows whether the answer is correct.
4. The user taps “next” to continue.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 2.0 (2) suggested Added on Mar 22, 2026

    This version requires Android 9.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • xyz.numerus.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 15 MiB PGP Signature | Build Log