# Grippy vs STEM Line Builder

The clearest difference is update cadence: STEM Line Builder at every 2 weeks against Grippy's every 6 weeks. Grippy's advantage is iOS requirement (12.1 vs 15.0). On price, ads, 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.

Grippy ships an update every 6 weeks, STEM Line Builder every 2 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Grippy | STEM Line Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (18 ratings)](https://appshunter.io/ios/app/grippy-beastmaker-workouts/id1505768255/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 45.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 47 MB | 118 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cascom Ltd](https://appshunter.io/developer/1462727314) | [Ryo Ogasawara](https://appshunter.io/developer/6793957355) |

## What reviewers say

### Grippy

[App page](https://appshunter.io/ios/app/grippy-beastmaker-workouts/id1505768255)

This app provides access to a curated network of workouts designed by top coaches. It focuses on helping users improve their grip strength and overall progression in their training. The application is developed in partnership with Beastmaker.

**Highlights:** Workouts from top coaches, Progression tracking, Grip strength focus, Beastmaker partnership, Global coach network

**Features:** Vision Pro support

**In-app purchases:** none


### STEM Line Builder

[App page](https://appshunter.io/ios/app/stem-line-builder-longboard/id6793957353)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grippy free?

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

### Is STEM Line Builder free?

STEM Line Builder is free to download, with no in-app purchases.

### Do Grippy or STEM Line Builder have ads?

Neither Grippy nor STEM Line Builder shows ads.

### Which is updated more often, Grippy or STEM Line Builder?

Grippy ships an update every 6 weeks, and STEM Line Builder every 2 weeks. Most recently, Grippy was updated on October 23, 2026 and STEM Line Builder 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.*