--- title: "P21 - Reviews, Revenue and Downloads in Taiwan | Apple App Store" description: "P21 is a four-level phonics series for young learners. With the P21 App, you can listen to audio tracks from the P21 student books, watch videos in each unit, review keywords with flashcards, and play" --- # P21 — Taiwan ![P21 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/9b/20/92/9b209261-bce8-1dd9-1b97-cbe414d3084a/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [CAVES BOOKS](https://apptail.io/developer/caves-books-FDlb) (Taiwan) **Category:** Education **Rating:** 2.8/5 (51 ratings) **Price:** Free **Bundle ID:** tw.com.cavesbooks.P21 **Store:** Apple App Store **Country:** Taiwan **Version:** 1.48 (released 2026-02-04) **Original Release:** 2019-03-24 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/tw/app/app/id1453823561) **AppTail Page:** [https://apptail.io/app/p21-HPUe/taiwan](https://apptail.io/app/p21-HPUe/taiwan) ## P21 Description P21 is a four-level phonics series for young learners. With the P21 App, you can listen to audio tracks from the P21 student books, watch videos in each unit, review keywords with flashcards, and play interesting phonics games. It contains all of the resources you need when learning phonics using the P21 series. Through the P21 series, children are able to build solid foundations in phonological awareness, oral language, phonics, reading, and spelling. The Alphabet, Short Vowels and Special Letters, Long Vowels and Blends, and Controlled Vowels and Digraphs are covered in the series. With P21 and the P21 App, your 21st century kids will become experts in the sounds of English. ## P21 Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/b5/0e/69/b50e69fe-e496-1923-bdca-4560db50d9c1/mzl.whxkqrya.png/2688x1242.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/90/71/db/9071db46-c0dc-7c7a-cd96-f6c1a9c55e27/mzl.lmxjscid.png/2688x1242.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/43/33/60/433360ce-992f-a526-d973-a2d3e29c0dd1/mzl.prennlkv.png/2688x1242.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/61/0b/87/610b87b2-6520-d66c-704f-76613abbe3d2/mzl.yijnzbxp.png/2688x1242.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/89/50/7c/89507c79-8caa-2fba-9350-6d903e9e380e/mzl.htsbevqi.png/2688x1242.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/03/33/e4/0333e4ed-61d4-34a8-c529-e7eb5e11b65b/mzl.rcvdphrs.png/2688x1242.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/61/69/18/6169186d-86cd-7160-6ebf-be64a1bc99c4/mzl.gqhlyahq.png/2688x1242.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/46/eb/7b/46eb7b7f-1820-18b7-1d5f-28f5a339d59d/mzl.mlcruzsg.png/2688x1242.png) ## P21 Rating Breakdown in Taiwan - 5 stars: 18 (35%) - 4 stars: 1 (2%) - 3 stars: 5 (10%) - 2 stars: 5 (10%) - 1 stars: 22 (43%) ## P21 Reviews in Taiwan ### **--- "App有小遊戲可以增加小朋友學習樂趣" 但是登入使用者之後， 跳出來需要用AR相機怎麼用都無法看 -- Selenahsuan, 2022-03-28 ### ***-- "Audio is not working" The audio is soundless. -- Tr. Joanna, 2020-10-09 ### *---- "非常難用" 怎麼弄都沒有播放出聲音 -- Claire228hsuan, 2020-09-20 ### ***-- "Book 2 unit 1 bug" 1. Game 1: For some words, there is no corresponding bubbles. And no speaker icon is shown to repeat the word. 2. Song: The track number is not in order. -- p21savy, 2020-06-06 [View all P21 reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## P21 Discovered Keywords - p21 ## P21 Available In - [Taiwan](https://apptail.io/app/p21-HPUe/taiwan) - [United States](https://apptail.io/app/p21-HPUe/united-states) - [Canada](https://apptail.io/app/p21-HPUe/canada) - [Germany](https://apptail.io/app/p21-HPUe/germany) - [Egypt](https://apptail.io/app/p21-HPUe/egypt) - [Spain](https://apptail.io/app/p21-HPUe/spain) - [United Kingdom](https://apptail.io/app/p21-HPUe/united-kingdom) - [Hong Kong SAR China](https://apptail.io/app/p21-HPUe/hong-kong) - [Ireland](https://apptail.io/app/p21-HPUe/ireland) - [India](https://apptail.io/app/p21-HPUe/india) - [Italy](https://apptail.io/app/p21-HPUe/italy) - [Japan](https://apptail.io/app/p21-HPUe/japan) - [South Korea](https://apptail.io/app/p21-HPUe/south-korea) - [Malaysia](https://apptail.io/app/p21-HPUe/malaysia) - [Nigeria](https://apptail.io/app/p21-HPUe/nigeria) - [New Zealand](https://apptail.io/app/p21-HPUe/new-zealand) - [Peru](https://apptail.io/app/p21-HPUe/peru) - [Portugal](https://apptail.io/app/p21-HPUe/portugal) - [Singapore](https://apptail.io/app/p21-HPUe/singapore) - [Austria](https://apptail.io/app/p21-HPUe/austria) - [South Africa](https://apptail.io/app/p21-HPUe/south-africa) - [Australia](https://apptail.io/app/p21-HPUe/australia) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*