# HeyBLU vs Diamond Planner

The clearest difference is in-app purchases: Diamond Planner at none against HeyBLU's 2. Diamond Planner also leads on iOS requirement (15.1 vs 17.0). HeyBLU's advantage is update cadence (weekly vs every 3 weeks) and ratings volume (18 vs 2). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. HeyBLU sells 2 in-app purchases, starting at $4.99 per month. Diamond Planner asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for HeyBLU against 5.0 for Diamond Planner. That said, the two scores are not equally well evidenced: HeyBLU has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

HeyBLU ships an update weekly, Diamond Planner every 3 weeks. Both last shipped on September 23, 2026.

## The numbers

| Metric | HeyBLU | Diamond Planner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (18 ratings)](https://appshunter.io/ios/app/heyblu-baseball-strike-zone/id6479205383/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/diamond-planner/id6766099697/reviews)** |
| Number of ratings | **18** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Subscription | **Free** |
| Size | 79 MB | 31 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Big League Ballpark, Inc](https://appshunter.io/developer/1733552856) | [Brian Ogilvie](https://appshunter.io/developer/1896194240) |

## 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 (2)**

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


### Diamond Planner

[App page](https://appshunter.io/ios/app/diamond-planner/id6766099697)

This app helps youth baseball and softball coaches create batting orders and assign fielding positions. Visualize your lineup on an interactive field and collaborate with assistant coaches easily. Spend more time coaching and less time on administrative tasks.

**Highlights:** Drag-and-drop batting order creation, Interactive fielding position assignments, Inning-by-inning lineup visualization, Assistant coach collaboration via email, Supports all rostered players batting

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

**In-app purchases:** none


## Frequently asked questions

### Is HeyBLU free?

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

### Is Diamond Planner free?

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

### Which has better reviews, HeyBLU or Diamond Planner?

Diamond Planner is rated higher. HeyBLU averages 4.9 out of 5 from 18 ratings, while Diamond Planner averages 5.0 from 2 ratings.

### Do HeyBLU or Diamond Planner have ads?

Neither HeyBLU nor Diamond Planner shows ads.

### Which is updated more often, HeyBLU or Diamond Planner?

HeyBLU ships an update weekly, and Diamond Planner every 3 weeks. Most recently, HeyBLU was updated on September 23, 2026 and Diamond Planner 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.*