# Sessio vs Sight Keys

The clearest difference is in-app purchases: Sessio at none against Sight Keys's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sight Keys sells 1 one-off in-app purchase. Sessio asks for nothing beyond the download.

Sessio ships an update every 2 weeks, Sight Keys weekly. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sessio | Sight Keys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sight-keys-sight-reading/id6761303621/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 94 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CRYSTAL LABS LLC](https://appshunter.io/developer/1880292439) | [Karol Lange](https://appshunter.io/developer/1888775571) |

## What reviewers say

### Sessio

[App page](https://appshunter.io/ios/app/sessio-lesson-manager/id6759702946)

**Features:** Apple Wallet

**In-app purchases:** none


### Sight Keys

[App page](https://appshunter.io/ios/app/sight-keys-sight-reading/id6761303621)

This app helps piano players improve their music reading skills through interactive exercises, structured lessons, and playable songs. It offers customizable practice sessions to build note recognition, rhythm, and fluency for steady daily improvement.

**Highlights:** Customizable practice sessions, Step-by-step lessons, Playable songs and exercises, Note recognition and rhythm training, Progress tracking, Chord and key signature practice

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sight Keys Premium | $4.49 | one-time |


## Frequently asked questions

### Is Sessio free?

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

### Is Sight Keys free?

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

### Do Sessio or Sight Keys have ads?

Neither Sessio nor Sight Keys shows ads.

### Which is updated more often, Sessio or Sight Keys?

Sessio ships an update every 2 weeks, and Sight Keys weekly. Most recently, Sessio was updated on October 7, 2026 and Sight Keys on October 11, 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.*