# Operant BH vs The ABA Lab

The clearest difference is in-app purchases: Operant BH at none against The ABA Lab's 3. The ABA Lab's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. The ABA Lab sells 3 in-app purchases, starting at $9.99 per month. Operant BH asks for nothing beyond the download.

Operant BH ships an update every 2 months, The ABA Lab every 2 days. The most recent releases landed on October 27, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Operant BH | The ABA Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 25 MB | 41 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Operant Systems Inc.](https://appshunter.io/developer/598392258) | [WAMVYTECH GROUP LLC](https://appshunter.io/developer/1887877334) |

## What reviewers say

### Operant BH

[App page](https://appshunter.io/ios/app/operant-bh/id6502954928)

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

**In-app purchases:** none


### The ABA Lab

[App page](https://appshunter.io/ios/app/the-aba-lab/id6761122498)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Quarterly | $19.99 | per 3 months |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is Operant BH free?

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

### Is The ABA Lab free?

The ABA Lab is free to download, with in-app purchases available.

### Do Operant BH or The ABA Lab have ads?

Neither Operant BH nor The ABA Lab shows ads.

### Which is updated more often, Operant BH or The ABA Lab?

Operant BH ships an update every 2 months, and The ABA Lab every 2 days. Most recently, Operant BH was updated on October 27, 2026 and The ABA Lab on October 10, 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.*