# Plesso vs Bilateral Calm

The clearest difference is in-app purchases: Bilateral Calm at none against Plesso's 2. Bilateral Calm also leads on update cadence (every 3 days vs every 11 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Plesso sells 2 in-app purchases, starting at $3.99 per month. Bilateral Calm asks for nothing beyond the download.

Plesso ships an update every 11 days, Bilateral Calm every 3 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Plesso | Bilateral Calm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 3 days** |
| Size | 72 MB | 180 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Oleksandr Dudar](https://appshunter.io/developer/1790447662) | [Mood and Sleep Clinic LLC](https://appshunter.io/developer/6777792306) |

## What reviewers say

### Plesso

[App page](https://appshunter.io/ios/app/plesso-emotional-intelligence/id6740537454)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $24.99 | per year |


### Bilateral Calm

[App page](https://appshunter.io/ios/app/bilateral-calm/id6777792304)

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

**In-app purchases:** none


## Frequently asked questions

### Is Plesso free?

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

### Is Bilateral Calm free?

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

### Do Plesso or Bilateral Calm have ads?

Neither Plesso nor Bilateral Calm shows ads.

### Which is updated more often, Plesso or Bilateral Calm?

Plesso ships an update every 11 days, and Bilateral Calm every 3 days. Most recently, Plesso was updated on October 28, 2026 and Bilateral Calm on October 25, 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.*