# FlatPromo vs Piano Sight Reader

The clearest difference is update cadence: Piano Sight Reader at every 2 days against FlatPromo's every 3 weeks. Piano Sight Reader also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

FlatPromo ships an update every 3 weeks, Piano Sight Reader every 2 days. Both last shipped on October 27, 2026.

## The numbers

| Metric | FlatPromo | Piano Sight Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 65 MB | 21 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [PLOSKOSTI ZVUKA, OOO](https://appshunter.io/developer/1595612204) | [Alva Rydberg](https://appshunter.io/developer/1587462832) |

## What reviewers say

### FlatPromo

[App page](https://appshunter.io/ios/app/flatpromo/id6446092842)

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

**In-app purchases:** none


### Piano Sight Reader

[App page](https://appshunter.io/ios/app/piano-sight-reader/id6462408172)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FlatPromo free?

FlatPromo is free to download, with no in-app purchases.

### Is Piano Sight Reader free?

Piano Sight Reader is free to download, with no in-app purchases.

### Do FlatPromo or Piano Sight Reader have ads?

Neither FlatPromo nor Piano Sight Reader shows ads.

### Which is updated more often, FlatPromo or Piano Sight Reader?

FlatPromo ships an update every 3 weeks, and Piano Sight Reader every 2 days. Most recently, FlatPromo was updated on October 27, 2026 and Piano Sight Reader on October 27, 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.*