# William Jones PI

> William Jones PI (iPhone/iPad app by Tafol Cyf.)

- Source: https://appshunter.io/ios/app/william-jones-pi/id1330945909 (this page in markdown: same URL + `.md`)
- Developer: [Tafol Cyf](https://appshunter.io/developer/1073052009)
- Category: Education
- Price: Free
- Age rating: 9+
- Requires: iOS 7.0 · 223 MB
- Languages: English
- Released: 2018-01-08
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/william-jones-pi/id1330945909/reviews.md

## What is William Jones PI?

Allwch chi gynorthwyo William Jones, y ditectif preifat, i ddatrys problemau?
Mae ganddo lond cwpwrdd ffeiliau o broblemau mathemategol - o'r hawdd i'r heriol, ac mae angen eich cymorth chi arno!

Lluniwyd yr ap ar gyfer disgyblion Blwyddyn 7 i Flwyddyn 9 ysgolion uwchradd er mwyn datblygu'r sgiliau sydd eu hangen ar gyfer y cwricwlwm mathemateg a'r Fframwaith Rhifedd. Mae ystod o weithgareddau, o rai syml i rai fydd yn herio disgyblion mwy abl a thalentog. Gellir ei ddefnyddio yn y dosbarth neu yn y cartref.

Mae'r ap yn cynnwys 46 pos i'w datrys. Os yw disgyblion yn cael trafferth yna mae cliwiau yn cael eu datgloi ar ôl hyn a hyn o amser er mwyn annog y disgyblion i roi cynnig ar ddatrys y problemau heb gymorth. Mae atebion a datrysiadau ar gael.

Can you help William Jones Private Investigator solve Welsh language mathematical puzzles?

The app contains numerous problem-solving activities ranging from easy to very challenging. It has been designed for pupils from Year 7 to Year 9 in secondary schools in Wales to develop skills required for the mathematics curriculum and the numeracy framework.


## Version history (last 1 release)

### 1.0 — 2018-01-08

This app has been updated by Apple to display the Apple Watch app icon.

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## More apps by Tafol Cyf

- [Ar y Fferm](https://appshunter.io/ios/app/ar-y-fferm/id975581261)
- [Campau Cosmig 2](https://appshunter.io/ios/app/campau-cosmig-2/id993118770)
- [Campau Cosmig](https://appshunter.io/ios/app/campau-cosmig/id1031562099)
- [Codi Hwyl](https://appshunter.io/ios/app/codi-hwyl/id1044263403)

All apps by Tafol Cyf: https://appshunter.io/developer/1073052009

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*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 2026-05-19.*