# EFL App vs Understanding Behavior BCBA

The clearest difference is update cadence: EFL App at every 2 days against Understanding Behavior BCBA's every 2 months. Understanding Behavior BCBA's advantage is iOS requirement (15.2 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. EFL App sells 7 one-off in-app purchases and Understanding Behavior BCBA sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

EFL App ships an update every 2 days, Understanding Behavior BCBA every 2 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | EFL App | Understanding Behavior BCBA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (89 ratings)](https://appshunter.io/ios/app/understanding-behavior-bcba/id6739206472/reviews)** |
| Number of ratings | — | **89** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 53 MB | 119 MB |
| Requires iOS | 17.0 | **15.2** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Data Makes the Difference, LLC](https://appshunter.io/developer/1573429272) | [Understanding Behavior LLC](https://appshunter.io/developer/1784214734) |

## What reviewers say

### EFL App

[App page](https://appshunter.io/ios/app/efl-app-essential-for-living/id1658293194)

**Features:** Apple Wallet, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Assessment EFL — 1 Learner | $49.00 | one-time |
| Training EFL — 1 Learner | $99.00 | one-time |
| Assessment EFL — 5 Learners | $244.99 | one-time |
| Assessment EFL — 10 Learners | $439.99 | one-time |
| Training EFL — 5 Learners | $494.99 | one-time |
| Assessment EFL — 20 Learners | $879.99 | one-time |
| Training EFL — 10 Learners | $890.00 | one-time |


### Understanding Behavior BCBA

[App page](https://appshunter.io/ios/app/understanding-behavior-bcba/id6739206472)

Prepare for your BCBA/BCaBA certification exam with this comprehensive study tool. Access free practice questions, mini mock exams, and courses. Connect with a supportive community and find affordable study materials to help you pass.

**Highlights:** Free mini mock exams, Free fluency questions, Free courses (coming soon), Notifications for free study groups, Access to paid study products, Community interaction

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study Hall Notes & Recordings | $19.99 | one-time |
| Fluency Questions | $39.99 | one-time |
| Mini Mocks UB | $99.00 | one-time |
| Comprehensive BCBA Exam Course | $324.99 | one-time |

**What reviewers like**

- 🚀 Excellent prep material
- 👍 Fun and clarity
- 🚀 Life saver
- 🚀 Study Materials that WORK
- 👍 Easy to Use


## Frequently asked questions

### Is EFL App free?

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

### Is Understanding Behavior BCBA free?

Understanding Behavior BCBA is free to download, with in-app purchases available.

### Do EFL App or Understanding Behavior BCBA have ads?

Neither EFL App nor Understanding Behavior BCBA shows ads.

### Which is updated more often, EFL App or Understanding Behavior BCBA?

EFL App ships an update every 2 days, and Understanding Behavior BCBA every 2 months. Most recently, EFL App was updated on November 7, 2026 and Understanding Behavior BCBA on October 30, 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.*