# SheetViewer vs Stringflo

The clearest difference is price: Stringflo at Free against SheetViewer's $0.99. SheetViewer's advantage is update cadence (every 5 days vs every 4 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Stringflo is free to download; SheetViewer costs $0.99 up front. SheetViewer sells 2 in-app purchases, starting at $1.99 per month and Stringflo sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

SheetViewer ships an update every 5 days, Stringflo every 4 months. Both last shipped on October 12, 2026.

## The numbers

| Metric | SheetViewer | Stringflo |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stringflo/id6740091216/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 102 MB | 4 MB |
| Requires iOS | **18.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [超 童](https://appshunter.io/developer/1100597049) | [Oshry Ben-Harush](https://appshunter.io/developer/1782630805) |

## What reviewers say

### SheetViewer

[App page](https://appshunter.io/ios/app/sheetviewer-follow-play/id6482971546)

Practice music scores with your digital piano or MIDI keyboard. The app syncs with your instrument, scrolls the score with playback, and provides real-time feedback on your accuracy. It offers tools like tempo adjustment, metronome, and sight-reading games.

**Highlights:** MIDI instrument connection, Real-time note accuracy feedback, Auto-scrolling sheet music, Adjustable tempo and metronome, Sight-reading mini-games, MusicXML, MXML, XML import

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SheetViewer Pro by month | $1.99 | per month |
| SheetViewer Pro by Year | $7.99 | per year |


### Stringflo

[App page](https://appshunter.io/ios/app/stringflo/id6740091216)

Master the guitar fretboard with interactive note training, real-time pitch detection, and comprehensive theory tools. Practice with customizable challenges, visualize note positions, and track your progress to build fluency and deepen your understanding of the instrument.

**Highlights:** Randomized note challenges, Real-time pitch feedback, Fretboard visualization, Customizable practice sessions, Built-in tuner, Chord and scale theory tools, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $0.99 | per month |
| Monthly subscription | $0.99 | per month |


## Frequently asked questions

### Is SheetViewer free?

SheetViewer costs $0.99, and also offers in-app purchases.

### Is Stringflo free?

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

### Do SheetViewer or Stringflo have ads?

Neither SheetViewer nor Stringflo shows ads.

### Which is updated more often, SheetViewer or Stringflo?

SheetViewer ships an update every 5 days, and Stringflo every 4 months. Most recently, SheetViewer was updated on October 12, 2026 and Stringflo on October 12, 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.*