# FlexPro Grip vs PISON

The clearest difference is rating: PISON at 5.0 against FlexPro Grip's 4.1. FlexPro Grip's advantage is update cadence (weekly vs every 3 weeks) and ratings volume (26 vs 7). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PISON holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 26 and 7 respectively.

FlexPro Grip ships an update weekly, PISON every 3 weeks. The most recent releases landed on September 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | FlexPro Grip | PISON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (26 ratings)](https://appshunter.io/ios/app/flexpro-grip/id1630738994/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/pison/id6475786964/reviews)** |
| Number of ratings | **26** | 7 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 93 MB | 64 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FlexProGrip](https://appshunter.io/developer/1596885871) | [Pison Technology](https://appshunter.io/developer/1705268860) |

## What reviewers say

### FlexPro Grip

[App page](https://appshunter.io/ios/app/flexpro-grip/id1630738994)

This app works with a specialized device to create customized training programs for baseball pitchers. It measures baseline strength and endurance to improve pitching performance, reduce injury risk, and accelerate recovery. Track your progress with saved workout history.

**Highlights:** Customized training protocols, Strength, endurance, and RPD testing, Objective data measurements, Injury risk reduction, Performance enhancement, Workout history tracking

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

**In-app purchases:** none


### 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 FlexPro Grip free?

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

### Is PISON free?

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

### Which has better reviews, FlexPro Grip or PISON?

PISON is rated higher. FlexPro Grip averages 4.1 out of 5 from 26 ratings, while PISON averages 5.0 from 7 ratings.

### Do FlexPro Grip or PISON have ads?

Neither FlexPro Grip nor PISON shows ads.

### Which is updated more often, FlexPro Grip or PISON?

FlexPro Grip ships an update weekly, and PISON every 3 weeks. Most recently, FlexPro Grip was updated on September 10, 2026 and PISON on September 23, 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.*