# B vs Eikona

The clearest difference is review sentiment: Eikona at 100% against B's 50%. Eikona also leads on price (Free vs $1.99) and rating (5.0 vs 3.5). B's advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 15.0). On update cadence, ads and device support there is nothing between them.

Eikona is free to download; B costs $1.99 up front. Eikona sells 4 one-off in-app purchases. B asks for nothing beyond the download.

Eikona holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: Eikona has 62 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 100% of Eikona's.

B ships an update every 9 months, Eikona every 7 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | B | Eikona |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/b-system-cba-accordion-tutor/id1037609940/reviews) | **[5.0 (62 ratings)](https://appshunter.io/ios/app/eikona/id1528572816/reviews)** |
| Number of ratings | 2 | **62** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 7 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 29 MB | 10 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Eskin](https://appshunter.io/developer/342739369) | [VDUB Software, LLC](https://appshunter.io/developer/284947384) |

## What reviewers say

### B

[App page](https://appshunter.io/ios/app/b-system-cba-accordion-tutor/id1037609940)

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:** Vision Pro support

**In-app purchases:** none


### Eikona

[App page](https://appshunter.io/ios/app/eikona/id1528572816)

Access daily hymns for the Liturgical year to enhance your prayer routine. Follow along with illustrated sheet music and explore Morning Prayers and Festal Hymns. Enjoy Byzantine Chant recordings by experienced chanters.

**Highlights:** Daily liturgical hymns, Illustrated sheet music, Morning Prayers, Festal Hymns, Byzantine Chant recordings

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backer | $5.00 | one-time |
| Booster | $10.00 | one-time |
| Benefactor | $20.00 | one-time |
| Patron | $50.00 | one-time |


## Frequently asked questions

### Is B free?

B costs $1.99, with no in-app purchases.

### Is Eikona free?

Eikona is free to download, with in-app purchases available.

### Which has better reviews, B or Eikona?

Eikona is rated higher. B averages 3.5 out of 5 from 2 ratings, while Eikona averages 5.0 from 62 ratings.

### Do B or Eikona have ads?

Neither B nor Eikona shows ads.

### Which is updated more often, B or Eikona?

B ships an update every 9 months, and Eikona every 7 months. Most recently, B was updated on November 2, 2026 and Eikona on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*