PNO Book vs Infor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PNO Book
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PNO Books is an ever-growing collection of chord progression books designed for musicians who love learning by ear and enjoy discovering new sounds. Whether you're looking for progressions inspired by specific songs, genres, or artists—or want to explore unique piano theory insights—PNO Books makes it easy. Each book includes clear, highlighted chords and accompanying video lessons, giving you a visual and practical way to bring progressions to life on the keys. Perfect for Pianists Who: Learn best by ear and love experimenting with new sounds Enjoy learning from YouTube but want structured, ready-to-play progressions Want fresh chord ideas inspired by real music to spark creativity Prefer a no-fluff, straight-to-the-point approach to playing With new books and videos added regularly, PNO Books is your go-to resource for expanding your chord vocabulary and refining your sound. Download now and start playing!
Infor
This platform helps aspiring musicians learn instruments and music theory through structured lessons curated by student-teachers. It offers real-time progress tracking, supplementary resources, and an integrated video player for an immersive learning experience.
- Structured instrument lessons
- Music theory education
- Student-teacher connections
- Real-time progress tracking
- Integrated video player
- Community forums
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Informusic is a modern, student-led platform dedicated to teaching aspiring musicians about various musical instruments and developing a rich understanding of reading and understanding music. Built by similarly dedicated musicians, Informusic connects learners with knowledgeable student-teachers who curate courses based off of their instrument through approachable, structured lessons. Users can track their progress through their courses in real time, witnessing their improvements and advancement as they continue through their lessons. Each lesson is paired with resources written by the teacher to reinforce the key concepts, terminology, and techniques, enabling students to absorb information from various sources. To support interactive learning and diverse learning styles, Informusic features its very own video playing system, allowing users to watch performance clips, demonstrations, and lessons directly within the app without any external distractions. Since learning is heavily collaborative, Informusic provides a dedicated forums to encourage users to interact with the Informusic community. Users can ask questions, help their fellow Informusicians, and engage with both instructors and community members. By managing user content in the forums, the Informusic forums page encourages the creation of a supportive community where knowledge is exchanged and shared among the users of Informusic.
Screenshots
Verdict
The clearest difference is update cadence: PNO Book at weekly against Infor's monthly. On price, ads, in-app purchases and device support 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.
PNO Book ships an update weekly, Infor monthly. Both last shipped on October 30, 2026.
| Parameter | PNO Book | Infor |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 58 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Reginald Watkins | Jayabindu Singh |
In-app purchases
PNO Book
No in-app purchases
Infor
No in-app purchases









