# Habit Chain vs KNOCKKNOCK / Retro Notes

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

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

On the App Store both sit at effectively the same score — 5.0 for Habit Chain against 5.0 for KNOCKKNOCK / Retro Notes. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | Habit Chain | KNOCKKNOCK / Retro Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/habit-chain/id6741027219/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/knockknock-retro-notes/id6754227270/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 6 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Selcuk Ozdemir](https://appshunter.io/developer/1729068911) | [Yaroslav Samoylov](https://appshunter.io/developer/683107070) |

## What reviewers say

### Habit Chain

[App page](https://appshunter.io/ios/app/habit-chain/id6741027219)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Habit Chain free?

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

### Is KNOCKKNOCK / Retro Notes free?

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

### Which has better reviews, Habit Chain or KNOCKKNOCK / Retro Notes?

Habit Chain and KNOCKKNOCK / Retro Notes are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Habit Chain or KNOCKKNOCK / Retro Notes have ads?

Neither Habit Chain nor KNOCKKNOCK / Retro Notes 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.*