# HeyBLU vs Casmium Velo Tracker

The clearest difference is monetization model: Casmium Velo Tracker at freemium against HeyBLU's subscription. HeyBLU's advantage is update cadence (every 8 days vs every 3 months) and ratings volume (21 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. HeyBLU sells 4 in-app purchases, starting at $4.99 per month and Casmium Velo Tracker sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for HeyBLU against 5.0 for Casmium Velo Tracker. That said, the two scores are not equally well evidenced: HeyBLU has 21 ratings behind it against 1, so its average is the more settled of the two.

HeyBLU ships an update every 8 days, Casmium Velo Tracker every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | HeyBLU | Casmium Velo Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (21 ratings)](https://appshunter.io/ios/app/heyblu-baseball-strike-zone/id6479205383/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/casmium-velo-tracker/id6748710890/reviews)** |
| Number of ratings | **21** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 months |
| Monetization | Subscription | **Freemium** |
| Size | 78 MB | 90 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Big League Ballpark, Inc](https://appshunter.io/developer/1733552856) | [Casmium](https://appshunter.io/developer/1557801382) |

## What reviewers say

### HeyBLU

[App page](https://appshunter.io/ios/app/heyblu-baseball-strike-zone/id6479205383)

This app transforms your iPhone into an objective strike zone for youth baseball and softball. It provides live audio calls for balls and strikes, tracks pitch data, and helps develop pitcher command and batter's eye.

**Highlights:** Live audio ball/strike calls, Adjustable strike zone, Pitch heatmaps and logs, Estimated velocity tracking, Command effectiveness rating, Pitcher performance tracking, Batter's eye development tool

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| HeyBLU Pro Monthly | $12.99 | per month |
| Pro Annual | $49.99 | per year |
| HeyBLU Pro | $79.99 | per year |


### Casmium Velo Tracker

[App page](https://appshunter.io/ios/app/casmium-velo-tracker/id6748710890)

Measure pitch speeds accurately with your iPhone. Features AI-driven analysis, sport-specific calibration for baseball and softball, and video tools for mechanics comparison. Offers advanced analytics and workload monitoring for training.

**Highlights:** Real-time pitch speed measurement (MPH), AI-driven pitch detection, Baseball and softball modes, Pitch consistency analytics, Automatic video saving, Side-by-side video comparison, Smart recording guidance

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Mode | $1.99 | per month |


## Frequently asked questions

### Is HeyBLU free?

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

### Is Casmium Velo Tracker free?

Casmium Velo Tracker is free to download, with in-app purchases available.

### Which has better reviews, HeyBLU or Casmium Velo Tracker?

Casmium Velo Tracker is rated higher. HeyBLU averages 5.0 out of 5 from 21 ratings, while Casmium Velo Tracker averages 5.0 from 1 ratings.

### Do HeyBLU or Casmium Velo Tracker have ads?

Neither HeyBLU nor Casmium Velo Tracker shows ads.

### Which is updated more often, HeyBLU or Casmium Velo Tracker?

HeyBLU ships an update every 8 days, and Casmium Velo Tracker every 3 months. Most recently, HeyBLU was updated on October 30, 2026 and Casmium Velo Tracker on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*