# FlexPro Grip vs TheStack Baseball

The clearest difference is review sentiment: FlexPro Grip at 67% against TheStack Baseball's 0%. FlexPro Grip also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). TheStack Baseball's advantage is rating (4.9 vs 4.1). On price, ratings volume, in-app purchases and device support there is nothing between them.

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

TheStack Baseball holds the better App Store score, 4.9 against 4.1. Both are backed by a comparable volume of ratings — 26 and 53 respectively. Written reviews complicate that: 67% of FlexPro Grip's written reviews are positive against 0% of TheStack Baseball's, so the app with the better star average is not the one people write more warmly about.

FlexPro Grip ships an update weekly, TheStack Baseball every 2 months. The most recent releases landed on September 10, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | FlexPro Grip | TheStack Baseball |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (26 ratings)](https://appshunter.io/ios/app/flexpro-grip/id1630738994/reviews) | **[4.9 (53 ratings)](https://appshunter.io/ios/app/thestack-baseball/id6477413655/reviews)** |
| Number of ratings | 26 | **53** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 93 MB | 121 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FlexProGrip](https://appshunter.io/developer/1596885871) | [The Stack System Baseball GP, Inc.](https://appshunter.io/developer/1729294195) |

## 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


### TheStack Baseball

[App page](https://appshunter.io/ios/app/thestack-baseball/id6477413655)

Enhance your baseball performance by increasing bat speed through dynamic, personalized training programs. Track your progress, connect with other players and coaches, and optimize your workouts for maximum gains. Requires a Stack Bat to begin.

**Highlights:** Dynamic training programs, Personalized speed trainer, Track speed and metrics, Connect with other players, Team monitoring for coaches, Variable inertia speed training

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FlexPro Grip free?

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

### Is TheStack Baseball free?

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

### Which has better reviews, FlexPro Grip or TheStack Baseball?

TheStack Baseball is rated higher. FlexPro Grip averages 4.1 out of 5 from 26 ratings, while TheStack Baseball averages 4.9 from 53 ratings.

### Do FlexPro Grip or TheStack Baseball have ads?

TheStack Baseball shows ads; FlexPro Grip does not.

### Which is updated more often, FlexPro Grip or TheStack Baseball?

FlexPro Grip ships an update weekly, and TheStack Baseball every 2 months. Most recently, FlexPro Grip was updated on September 10, 2026 and TheStack Baseball on September 16, 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.*