# Sinogram Star vs FretBuzz Chords

The clearest difference is price: FretBuzz Chords at $4.99 against Sinogram Star's $19.99. Sinogram Star's advantage is update cadence (every 3 weeks vs every 31 months) and iOS requirement (12.1 vs 16). On ads, in-app purchases and device support there is nothing between them.

Sinogram Star costs $19.99 and FretBuzz Chords $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sinogram Star ships an update every 3 weeks, FretBuzz Chords every 31 months. The most recent releases landed on October 18, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Sinogram Star | FretBuzz Chords |
| --- | --- | --- |
| Price | $19.99 | **$4.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fretbuzz-chords/id6446862041/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 31 months |
| Monetization | — | Paid |
| Size | 67 MB | 2 MB |
| Requires iOS | **12.1** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Clavis Sinica Limited](https://appshunter.io/developer/1635273455) | [Altug Basaran](https://appshunter.io/developer/1679429133) |

## What reviewers say

### Sinogram Star

[App page](https://appshunter.io/ios/app/sinogram-star/id1635273453)

**Features:** macOS Compatibility

**In-app purchases:** none


### FretBuzz Chords

[App page](https://appshunter.io/ios/app/fretbuzz-chords/id6446862041)

Learn jazz guitar chords and their inversions with detailed diagrams and interactive practice tools. Explore various chord types, string combinations, and understand chord structures for effective practice.

**Highlights:** Jazz guitar chord learning, Chord inversions, Diatonic and spread triads, Quartals and shells, Drop 2 & 3 chords, Rootless voicings, Interactive chord diagrams, Play-along metronome

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sinogram Star free?

Sinogram Star costs $19.99, with no in-app purchases.

### Is FretBuzz Chords free?

FretBuzz Chords costs $4.99, with no in-app purchases.

### Do Sinogram Star or FretBuzz Chords have ads?

Neither Sinogram Star nor FretBuzz Chords shows ads.

### Which is updated more often, Sinogram Star or FretBuzz Chords?

Sinogram Star ships an update every 3 weeks, and FretBuzz Chords every 31 months. Most recently, Sinogram Star was updated on October 18, 2026 and FretBuzz Chords on September 29, 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.*