# KNOCKKNOCK / Retro Notes vs Deep Session

The clearest difference is in-app purchases: Deep Session at none against KNOCKKNOCK / Retro Notes's 1. Deep Session also leads on iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. KNOCKKNOCK / Retro Notes sells 1 one-off in-app purchase. Deep Session asks for nothing beyond the download.

## The numbers

| Metric | KNOCKKNOCK / Retro Notes | Deep Session |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knockknock-retro-notes/id6754227270/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 31 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yaroslav Samoylov](https://appshunter.io/developer/683107070) | [Ulugbek Samigjonov](https://appshunter.io/developer/1887502685) |

## What reviewers say

### KNOCKKNOCK / Retro Notes

[App page](https://appshunter.io/ios/app/knockknock-retro-notes/id6754227270)

This app offers a unique note-taking experience with a retro CRT monitor aesthetic. View two notes simultaneously and interact with a fun, animated fidget element on the side.

**Highlights:** Retro CRT monitor design, Dual note display, Interactive fidget element, Fun and engaging interface

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Notes | $8.99 | one-time |


### Deep Session

[App page](https://appshunter.io/ios/app/deep-session-focus-timer/id6761531383)

**In-app purchases:** none


## Frequently asked questions

### Is KNOCKKNOCK / Retro Notes free?

KNOCKKNOCK / Retro Notes is free to download, with in-app purchases available.

### Is Deep Session free?

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

### Do KNOCKKNOCK / Retro Notes or Deep Session have ads?

Neither KNOCKKNOCK / Retro Notes nor Deep Session shows ads.

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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.*