# OptimistPal vs marimo Knock

The clearest difference is in-app purchases: marimo Knock at none against OptimistPal's 4. marimo Knock also leads on update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OptimistPal sells 4 in-app purchases, starting at $1.99 per 7 days. marimo Knock asks for nothing beyond the download.

OptimistPal ships an update every 3 weeks, marimo Knock weekly. The most recent releases landed on September 21, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | OptimistPal | marimo Knock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/optimistpal-meditation-sleep/id6770231815/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Subscription | — |
| Size | 61 MB | 22 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Kevin Basco](https://appshunter.io/developer/1803746571) | [SeongChan Joo](https://appshunter.io/developer/6795682041) |

## What reviewers say

### OptimistPal

[App page](https://appshunter.io/ios/app/optimistpal-meditation-sleep/id6770231815)

This app offers daily perspective shifts to help reframe negative thought patterns. It intervenes when you reach for certain apps, providing a moment of pause and a guided reframe to encourage a more optimistic outlook without requiring willpower or promoting toxic positivity.

**Highlights:** Daily reframing practice, Thought pattern identification, Customizable app selection, Time-limited app access, Daily streak tracking, Secular affirmations

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $3.99 | per month |
| Yearly Lite | $7.99 | per year |
| Yearly | $9.99 | per year |


### marimo Knock

[App page](https://appshunter.io/ios/app/marimo-knock/id6795682039)

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

**In-app purchases:** none


## Frequently asked questions

### Is OptimistPal free?

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

### Is marimo Knock free?

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

### Do OptimistPal or marimo Knock have ads?

Neither OptimistPal nor marimo Knock shows ads.

### Which is updated more often, OptimistPal or marimo Knock?

OptimistPal ships an update every 3 weeks, and marimo Knock weekly. Most recently, OptimistPal was updated on September 21, 2026 and marimo Knock on October 29, 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.*