Comparison

ZB PocketCX vs JustinGuitar Note Trainer

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

Head to head
About

ZB PocketCX

Features
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ZB Loaner App, from Zimmer Biomet, will streamline the process of identifying and ordering tools used in medical procedures involving Zimmer Biomet's products. This app takes sales representatives through a decision tree process which results in generating a notification to customer service containing the data required for the order.

About

JustinGuitar Note Trainer

Master the guitar fretboard quickly with daily exercises designed to build a deep understanding of note locations. This app helps you stop guessing and start knowing every note on your guitar, improving your playing.

Highlights
  • Learn fretboard notes fast
  • Daily 5-minute exercises
  • Build mental map of guitar neck
  • Stop guessing, start knowing notes
  • Smart repetition for weak spots
  • Practice anywhere on your phone
Features
Currently charting
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Most guitar players never properly learn the notes on the fretboard. We memorize shapes and guess—and it works for a while. But when we try to improve, we hit a wall. JustinGuitar Note Trainer helps us learn the fretboard fast, in just 5 minutes a day. No diagrams. No memorizing charts. Just simple exercises that build a real understanding of the guitar neck. We learn to find any note on the guitar fretboard, build a clear mental map across all strings, and stop guessing and actually know the notes. Short daily exercises perfect for busy schedules, smart repetition to reinforce weak spots, and practice anywhere with your phone. If we want to learn guitar notes properly, this is one of the most valuable skills we can build. Built by JustinGuitar.

Screenshots

ZB PocketCX4 screens
JustinGuitar Note Trainer4 screens

Verdict

The call

The clearest difference is price: ZB PocketCX at Free against JustinGuitar Note Trainer's $4.99. JustinGuitar Note Trainer's advantage is chart position (#45 vs unranked). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

ZB PocketCX is free to download; JustinGuitar Note Trainer costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ZB PocketCX ships an update every 2 weeks, JustinGuitar Note Trainer fortnightly. The most recent releases landed on October 2, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 9 level
ZB PocketCX versus JustinGuitar Note Trainer: the parameters behind the verdict, then further details
ParameterZB PocketCXJustinGuitar Note Trainer
PriceFree — better$4.99
Rating—4.4 (5 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
Best chart rank—#45 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size33 MB40 MB
Age rating17+4+
DeveloperZimmer, IncJustin Guitar

In-app purchases

None

ZB PocketCX

No in-app purchases

None

JustinGuitar Note Trainer

No in-app purchases

Questions

Is ZB PocketCX free?
ZB PocketCX is free to download, with no in-app purchases.
Is JustinGuitar Note Trainer free?
JustinGuitar Note Trainer costs $4.99, with no in-app purchases.
Do ZB PocketCX or JustinGuitar Note Trainer have ads?
Neither ZB PocketCX nor JustinGuitar Note Trainer shows ads.
Which is updated more often, ZB PocketCX or JustinGuitar Note Trainer?
ZB PocketCX ships an update every 2 weeks, and JustinGuitar Note Trainer fortnightly. Most recently, ZB PocketCX was updated on October 2, 2026 and JustinGuitar Note Trainer on October 25, 2026.

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