Comparison

Psychflex vs Note Diver

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

Head to head
About

Psychflex

This app provides therapists with a comprehensive suite of clinical tools and exercises for evidence-based therapies like ACT and PBT. It offers programs, interventions, and e-learning modules to enhance client care and professional development. Clients can access shared content for free.

Highlights
  • Clinical tools and exercises
  • Acceptance and Commitment Therapy (ACT) programs
  • Process-Based Therapy (PBT) programs
  • Client-facing exercises
  • E-learning modules for therapists
  • Monthly content updates
Features
Read full description

To use this app, you need an account. You can find more information by visiting the website psychflex.com. The Psychflex app is a multifunctional tool for therapists and practitioners working with acceptance and commitment therapy, process-based therapy, and other forms of evidence-based therapy. With this app, you will have access to a broad range of clinical tools and exercises in the form of texts, illustrations, animations, audios, and even videos. You can send them to all of your clients, who can use the app for free. The app is divided into three sections: Programs, Exercises, and E-learning. Under Programs, you will find catered training programs based on Acceptance and Commitment Therapy (ACT), Process-Based Therapy (PBT), and other evidence-based therapies. These programs have been produced by clinical experts such as Steven C. Hayes, Gijs Jansen, and many more. In Exercises, you will find a library of clinical tools, techniques, and interventions, that you can send to your clients, or add to your personal collection to build your own sessions. Finally, the E-learning section gives you the opportunity to deepen your knowledge and grow your skills as a therapist or coach. Every month, new tools and training modules will become available inside PsychFlex, to constantly improve your ability to serve your clients.

About

Note Diver

Practice reading music by playing notes into your device's microphone to zap approaching sharks. Features real-time pitch detection, multiple clefs, and a smart practice mode. Offers a fun, gamified approach to musical education for all ages.

Highlights
  • Gamified sight-reading practice
  • Real-time instrument pitch detection
  • On-screen keyboard option
  • Multiple clefs and intervals
  • Smart Practice for missed notes
  • Family-friendly profiles
  • In-game currency for unlocks
Features
Read full description

Note Diver turns sight-reading practice into an underwater arcade game. Sharks carry music notes on signs as they swim toward your diver. To stop them, you play the right note on a real instrument — piano, guitar, or bass — into your device's microphone. Read the note. Play it cleanly. Zap the shark. Survive the deep. No instrument? Toggle the on-screen keyboard in Setup and tap notes as they appear. Perfect for trying the game before pulling out your piano, or for kids learning their first notes. WHAT MAKES IT WORK • Real-time pitch detection that handles slightly out-of-tune pianos, plucked guitar harmonics, and quiet acoustic instruments • Treble clef, bass clef, both, intervals, and chords — eight biomes of progression across coral reefs, kelp forests, sunken ships, and the abyss • A tuner built in, with a chromatic needle and string guides for guitar and bass • Smart Practice generates a drill from the exact notes you miss most • Family-friendly: each player gets their own profile (avatar + progress) so a whole household can share one device THE OCEAN HAS PERSONALITY Piranha schools attack in waves. Squid carry three-note melodies and ink over your other targets. A megalodon boss every third level. Earn coins to unlock diver suits (yes, a mermaid tail), weapons that vanquish creatures in different ways, victory emotes, and themed shark skins. PRIVACY Audio is analyzed on your device only. Nothing is recorded, stored, or sent to a server — ever. The app contains no advertising, no in-app purchases, no analytics, no accounts. WHO IT'S FOR Anyone learning to read music — from total beginners on the white keys to bass players reading off the staff. Music teachers love it as homework. Parents love that it gets kids practicing without nagging. Dive in. Read music. Save yourself from the sharks.

Screenshots

Psychflex3 screens
Note Diver4 screens

Verdict

The call

The clearest difference is rating: Note Diver at 5.0 against Psychflex's 4.0. Note Diver also leads on update cadence (weekly vs every 4 months). Psychflex's advantage is ratings volume (9 vs 2). On price, review sentiment, ads and in-app purchases 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

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

ReceptionRating · Positive reviews · Number of ratings

Note Diver holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Psychflex ships an update every 4 months, Note Diver weekly. The most recent releases landed on September 22, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 7 level
Psychflex versus Note Diver: the parameters behind the verdict, then further details
ParameterPsychflexNote Diver
PriceFreeFree
Rating4.0 (9 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings9 — better2
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1514.0 — better
Further details — not scored
Size1 MB2 MB
Age rating4+9+
DeveloperHulan bvJames Kazam

Customer experience

Psychflex

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Note Diver

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Psychflex

No in-app purchases

None

Note Diver

No in-app purchases

Questions

Is Psychflex free?
Psychflex is free to download, with no in-app purchases.
Is Note Diver free?
Note Diver is free to download, with no in-app purchases.
Which has better reviews, Psychflex or Note Diver?
Note Diver is rated higher. Psychflex averages 4.0 out of 5 from 9 ratings, while Note Diver averages 5.0 from 2 ratings.
Do Psychflex or Note Diver have ads?
Neither Psychflex nor Note Diver shows ads.
Which is updated more often, Psychflex or Note Diver?
Psychflex ships an update every 4 months, and Note Diver weekly. Most recently, Psychflex was updated on September 22, 2026 and Note Diver on October 1, 2026.

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