# FocusCalm vs PISON

The clearest difference is rating: PISON at 5.0 against FocusCalm's 3.9. PISON also leads on in-app purchases (none vs 2). FocusCalm's advantage is ratings volume (53 vs 7) and iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FocusCalm sells 2 in-app purchases, starting at $9.99 per month. PISON asks for nothing beyond the download.

PISON holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: FocusCalm has 53 ratings behind it against 7, so its average is the more settled of the two.

FocusCalm ships an update monthly, PISON every 3 weeks. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | FocusCalm | PISON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (53 ratings)](https://appshunter.io/ios/app/focuscalm-brain-training/id1512564491/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/pison/id6475786964/reviews)** |
| Number of ratings | **53** | 7 |
| Positive reviews | 23.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 190 MB | 65 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BrainCo Inc](https://appshunter.io/developer/1148192149) | [Pison Technology](https://appshunter.io/developer/1705268860) |

## What reviewers say

### FocusCalm

[App page](https://appshunter.io/ios/app/focuscalm-brain-training/id1512564491)

Train your brain for improved focus and a calmer mind with science-backed exercises and real-time feedback. This app helps you manage stress, enhance mental performance, and track your progress towards a more focused and tranquil state.

**Highlights:** Brain training exercises, Real-time brain activity feedback, FocusCalm score tracking, Neurofeedback technology, Stress management techniques, Performance tracking metrics

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FocusCalm Monthly Subscription | $9.99 | per month |
| FocusCalm Annual Subscription | $69.99 | per year |


### PISON

[App page](https://appshunter.io/ios/app/pison/id6475786964)

This app provides insights into your cognitive and physical performance using data from compatible smartwatches. It helps you understand readiness, mental agility, and focus, with advanced metrics for sleep, stress, and health available through membership tiers.

**Highlights:** Cognitive performance metrics (Readiness, Agility, Focus), Sleep and fatigue tracking, Stress and health monitoring, Fitness metrics (respiratory rate, calories), Community leaderboards and groups, Insights from neural sensor technology

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

**In-app purchases:** none


## Frequently asked questions

### Is FocusCalm free?

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

### Is PISON free?

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

### Which has better reviews, FocusCalm or PISON?

PISON is rated higher. FocusCalm averages 3.9 out of 5 from 53 ratings, while PISON averages 5.0 from 7 ratings.

### Do FocusCalm or PISON have ads?

Neither FocusCalm nor PISON shows ads.

### Which is updated more often, FocusCalm or PISON?

FocusCalm ships an update monthly, and PISON every 3 weeks. Most recently, FocusCalm was updated on October 15, 2026 and PISON on October 9, 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.*