# 9011B vs PRO2500A

The clearest difference is update cadence: PRO2500A at every 2 months against 9011B's every 12 months. 9011B's advantage is iOS requirement (9.0 vs 15.6). 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.

9011B ships an update every 12 months, PRO2500A every 2 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | 9011B | PRO2500A |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Size | 23 MB | 4 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Jenco Instruments, Inc.](https://appshunter.io/developer/1275832649) | [明武 伍](https://appshunter.io/developer/1622511470) |

## What reviewers say

### 9011B

[App page](https://appshunter.io/ios/app/9011b/id1512549549)

**Features:** macOS Compatibility

**In-app purchases:** none


### PRO2500A

[App page](https://appshunter.io/ios/app/pro2500a/id6744863827)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 9011B free?

9011B is free to download, with no in-app purchases.

### Is PRO2500A free?

PRO2500A is free to download, with no in-app purchases.

### Do 9011B or PRO2500A have ads?

Neither 9011B nor PRO2500A shows ads.

### Which is updated more often, 9011B or PRO2500A?

9011B ships an update every 12 months, and PRO2500A every 2 months. Most recently, 9011B was updated on October 25, 2026 and PRO2500A 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.*