# PESI vs Optimal State

The clearest difference is review sentiment: Optimal State at 100% against PESI's 14%. Optimal State also leads on rating (5.0 vs 4.7). PESI's advantage is update cadence (fortnightly vs every 5 months) and ratings volume (3.5K vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. PESI sells 7 one-off in-app purchases and Optimal State sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Optimal State holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PESI has 3.5K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 14% of PESI's written reviews are positive against 100% of Optimal State's.

PESI ships an update fortnightly, Optimal State every 5 months. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PESI | Optimal State |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3.5K ratings)](https://appshunter.io/ios/app/pesi/id1541577386/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/optimal-state/id1604424804/reviews)** |
| Number of ratings | **3.5K** | 4 |
| Positive reviews | 14.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 43 MB | 36 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Psychotherapy Networker](https://appshunter.io/developer/1020579654) | [Optimal State LLC](https://appshunter.io/developer/1553406048) |

## What reviewers say

### PESI

[App page](https://appshunter.io/ios/app/pesi/id1541577386)

Access live and on-demand educational content, including seminars and webinars, directly from your mobile device. Download materials, complete evaluations, and earn certificates of completion, even offline.

**Highlights:** Download on-demand content for offline viewing, Participate in live webcasts and webinars, Access and download handout materials, Perform evaluations and take quizzes, Obtain certificates of completion

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atopic Dermatitis and Eczem... | $69.99 | one-time |
| Glorious Me: Recapturing an... | $69.99 | one-time |
| EMDR & Parts work for treat | $109.00 | one-time |
| Navigating the Political Mi... | $169.99 | one-time |
| Eating Disorders: Social Justi | $249.99 | one-time |
| 2-Day Anger Management Cert | $459.99 | one-time |
| Advanced EMDR Trauma Treatment | $1000.00 | one-time |

**What reviewers like**

- 🚀 Convenient access to courses
- 👍 Great content and trainings
- 💡 Ability to download for offline viewing

**What reviewers complain about**

- 🐛 Frequent crashes and app not opening
- 🔍 Issues with navigation and losing progress
- 📱 Lack of iPad/landscape mode support
- 🔇 Audio quality issues

**Reported bugs**

- App crashes on launch
- Courses not loading or showing
- Download feature not working as expected

**Requested features**

- Add ability to delete/remove completed courses
- Implement playback speed controls
- Improve resume functionality to remember last position


### Optimal State

[App page](https://appshunter.io/ios/app/optimal-state/id1604424804)

Track your mental and emotional state alongside physical sensations. Gain insights into your patterns with visual charts and receive personalized tools and suggestions for improvement. Daily reminders help you stay balanced and make positive life changes.

**Highlights:** Mental/Emotional State Tracking, Body Feeling Assessment, Visual Pattern Charts, Daily Check-in Reminders, Personalized Tools & Suggestions, Intuitive Navigation

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Optimal State | $4.99 | per month |


## Frequently asked questions

### Is PESI free?

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

### Is Optimal State free?

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

### Which has better reviews, PESI or Optimal State?

Optimal State is rated higher. PESI averages 4.7 out of 5 from 3.5K ratings, while Optimal State averages 5.0 from 4 ratings.

### Do PESI or Optimal State have ads?

Neither PESI nor Optimal State shows ads.

### Which is updated more often, PESI or Optimal State?

PESI ships an update fortnightly, and Optimal State every 5 months. Most recently, PESI was updated on September 23, 2026 and Optimal State on September 10, 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.*