Comparison

B vs Synesthesia

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

Head to head
About

B

Learn the notes on the treble side of a B-System Chromatic Button Accordion with a built-in note guide. Features high-quality sampled notes and a responsive button board for melodies and chords. Connect to external speakers for amplified sound.

Highlights
  • Built-in note guide
  • High-quality sampled notes
  • Responsive button board
  • Melody and chord playing
  • External speaker support
  • Toggleable note names
Features
Read full description

Using the built-in note guide, you will quickly learn the notes on the treble side of the B-System Chromatic Button Accordion (Bayan) and be playing songs in no time! The instrument has extremely high-quality individually sampled notes from a real instrument and a very fast, responsive button board for playing melodies and chords. For even more fun, plug your iPhone into an external amplified speaker. Touch the "?" button to toggle the note names.

About

Synesthesia

Experience music through a spectrum of colors, mimicking the sensory phenomenon of synesthesia. Use it as a dynamic mood light, a calming night light, or to visualize the pitches of songs and instruments.

Highlights
  • Music visualization
  • Mood lighting
  • Night light functionality
  • Pitch to color mapping
  • Microphone access for real-time audio
Features
Read full description

Synesthesia makes listening to music a colorful experience and is a wonderful mood light and soft night light when you want to calm down. Do you want to see colors when playing certain tones like people with synesthesia / chromestesia do? The app "Synesthesia - See the music in colors" enables you to experience music in color as well. Whether you use it to train you perfect pitch, to help you remember melodies or just for entertainment as a light organ while listening to your favorite songs - Synesthesia helps you to see the current pitch in colors. To experience the colors simply allow the app to access the microphone on the first start and then play your instrument or a song, sing, ... or just enjoy many color changing patterns even without music as a mood light or night light. Please note: People with synesthesia may experiences different colors for the same pitch. The app therefore uses it's own color scale (each musical note C displays a red color for example). Some of our users use the app as an replacement for their old light organs ... so that should work very well ;-) If you like music apps be sure to check out our other apps as well -> Piano Champion, Guitar Champion, Drum Champion, Voice Back .... and many more to come

Screenshots

B2 screens
Synesthesia4 screens

Verdict

The call

The clearest difference is price: Synesthesia at Free against B's $1.99. Synesthesia also leads on update cadence (monthly vs every 9 months) and ratings volume (16 vs 2). B's advantage is rating (3.5 vs 2.3) and review sentiment (50% vs 38%). On 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

Synesthesia is free to download; B costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

B holds the better App Store score, 3.5 against 2.3. That said, the two scores are not equally well evidenced: Synesthesia has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of B's written reviews are positive against 38% of Synesthesia's.

UpkeepUpdate frequency

B ships an update every 9 months, Synesthesia monthly. The most recent releases landed on September 17, 2026 and June 1, 2026 respectively.

Scorecard7 real differences · 3 level
B versus Synesthesia: the parameters behind the verdict, then further details
ParameterBSynesthesia
Price$1.99Free — better
Rating3.5 (2 ratings) — better2.3 (16 ratings)
Positive reviews50.0% of reviews — better37.5% of reviews
Number of ratings216 — better
Update frequencyEvery 9 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.08.0 — better
Further details — not scored
Size29 MB31 MB
Age rating4+4+
DeveloperMichael EskinChristian Auzinger

Customer experience

B

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews12 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Synesthesia

All ratings16 ratings
Positive25.0%
Neutral12.5%
Negative62.5%
Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

In-app purchases

None

B

No in-app purchases

None

Synesthesia

No in-app purchases

Questions

Is B free?
B costs $1.99, with no in-app purchases.
Is Synesthesia free?
Synesthesia is free to download, with no in-app purchases.
Which has better reviews, B or Synesthesia?
B is rated higher. B averages 3.5 out of 5 from 2 ratings, while Synesthesia averages 2.3 from 16 ratings.
Do B or Synesthesia have ads?
Neither B nor Synesthesia shows ads.
Which is updated more often, B or Synesthesia?
B ships an update every 9 months, and Synesthesia monthly. Most recently, B was updated on September 17, 2026 and Synesthesia on June 1, 2026.

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