P21 vs Smart Phonics 3rd 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
P21
This educational app supports a four-level phonics series for young learners. It offers audio tracks, videos, flashcards, and games to help children build foundational skills in phonological awareness, reading, and spelling.
- Audio tracks from student books
- Educational videos
- Keyword flashcards
- Phonics games
- Progress tracking
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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.
Smart Phonics 3rd 4
This educational app makes learning phonics engaging through a variety of interactive materials. It offers AI-powered speaking practice, animations, games, and flashcards to build essential English skills for young learners.
- AI-powered phonics speaking practice
- Class audio files
- Chant, song, and story animations
- Flashcards and practice games
- Interactive learning materials
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Smart Phonics series now in its third edition! Smart Phonics is a five-level series designed to make phonics fun and easy to learn. Students establish key skills that allow them to prepare for the greater world of English education. To ensure a diverse and communicative learning environment, Smart Phonics provides students with a wide variety of materials. Songs, chants, stories, animations, games, and a newly added phonics AI app keep students engaged and invested in their studies. Features 1. Phonics speaking practice assessed by AI Andi 2. Class audio files found in one easy-to-use location 3. Chant, song, and story animations for easy replay 4. Flashcards, practice activities, and games for phonics practice Easy download via QR code!
Screenshots
Verdict
The clearest difference is update cadence: Smart Phonics 3rd 4 at every 3 weeks against P21's every 6 weeks. On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
P21 ships an update every 6 weeks, Smart Phonics 3rd 4 every 3 weeks. The most recent releases landed on September 28, 2026 and October 2, 2026 respectively.
| Parameter | P21 | Smart Phonics 3rd 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 226 MB | 1.5 GB |
| Age rating | 4+ | 4+ |
| Developer | CAVES BOOKS LTD. | e-future Co., Ltd. |
Customer experience
P21
Smart Phonics 3rd 4
In-app purchases
P21
No in-app purchases
Smart Phonics 3rd 4
No in-app purchases
Questions
Is P21 free?
Is Smart Phonics 3rd 4 free?
Do P21 or Smart Phonics 3rd 4 have ads?
Which is updated more often, P21 or Smart Phonics 3rd 4?
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