Comparison

PNO Book vs TabNaviGuitar 2

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

PNO Book

Features
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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 artistsβ€”or want to explore unique piano theory insightsβ€”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!

About

TabNaviGuitar 2

Features
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In this app's "TabNavi mode," information from tablature files (GuitarPro format) loaded into the app is transmitted to the TabNavi guitar via Bluetooth. The LCD fingerboard panel on the guitar neck displays fingerings and string manipulations such as bends, supporting your playing. Furthermore, the playback speed adjustment function and the repeat function for any section allow for practice tailored to the player's level, from basic exercises for beginners to advanced song practice for advanced players. In addition to the songs included in the app, you can also select and practice with GuitarPro format tablature files saved on your smartphone. Meanwhile, "ChordNavi mode" allows you to easily enjoy playing chords along to your favorite YouTube songs. Selecting your favorite song from the list plays the video, and the chord forms are displayed directly on the LCD fingerboard, guiding you through playing the chords. Even songs you've never heard before can be played along to! Whether you want to enjoy your favorite songs at your own pace, accompany a friend singing, or play someone else's favorite song... you can easily enjoy playing the guitar in a variety of situations. You'll be able to play songs you thought you'd given up on. Even songs you don't know, you'll be able to improvise chord accompaniments. Furthermore, in chord dictionary mode, the fretboard LCD guides you to the correct finger placement while voice guidance navigates you on which finger to use. You'll never have to worry about not knowing which finger to use or where to press. Guitarists will be able to realize their envisioned performances and rediscover the joy of playing the guitar. That's "TabNavi Guitar."

Screenshots

PNO Book4 screens
TabNaviGuitar 24 screens

Verdict

The call

PNO Book and TabNaviGuitar 2 are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PNO Book ships an update weekly, TabNaviGuitar 2 every 2 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

ScorecardNo meaningful differences
PNO Book versus TabNaviGuitar 2: the parameters behind the verdict, then further details
ParameterPNO BookTabNaviGuitar 2
PriceFreeFree
Update frequencyWeekly β€” betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0.0 β€” better15.2
Further details β€” not scored
Size58 MB152 MB
Age rating4+4+
DeveloperReginald WatkinsTETSUYA NISHI

In-app purchases

None

PNO Book

No in-app purchases

None

TabNaviGuitar 2

No in-app purchases

Questions

Is PNO Book free?
PNO Book is free to download, with no in-app purchases.
Is TabNaviGuitar 2 free?
TabNaviGuitar 2 is free to download, with no in-app purchases.
Do PNO Book or TabNaviGuitar 2 have ads?
Neither PNO Book nor TabNaviGuitar 2 shows ads.
Which is updated more often, PNO Book or TabNaviGuitar 2?
PNO Book ships an update weekly, and TabNaviGuitar 2 every 2 weeks. Most recently, PNO Book was updated on October 11, 2026 and TabNaviGuitar 2 on October 24, 2026.

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