# Full Spectrum ABA vs Behavior Observer

The clearest difference is in-app purchases: Full Spectrum ABA at none against Behavior Observer's 2. Full Spectrum ABA also leads on ratings volume (62 vs 1) and device support (4 vs 2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Behavior Observer sells 2 in-app purchases, starting at $49.99 per year. Full Spectrum ABA asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Full Spectrum ABA against 5.0 for Behavior Observer. That said, the two scores are not equally well evidenced: Full Spectrum ABA has 62 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Full Spectrum ABA | Behavior Observer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (62 ratings)](https://appshunter.io/ios/app/full-spectrum-aba/id1598376819/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/behavior-observer/id6789358581/reviews) |
| Number of ratings | **62** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 50 MB | 4 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Full Spectrum Behavior Analysis LLC](https://appshunter.io/developer/1598376821) | [Daniel Zaccaro](https://appshunter.io/developer/1895771100) |

## What reviewers say

### Full Spectrum ABA

[App page](https://appshunter.io/ios/app/full-spectrum-aba/id1598376819)

Access free Continuing Education Units for ABA providers, including journal clubs, leadership programs, podcasts, and training. The app also provides information on ABA therapy services for children and young adults with autism.

**Highlights:** Free CEUs for ABA providers, Journal clubs and podcasts, Leadership and entrepreneurship programs, PGP trainings and RBT mentorship, Information on ABA therapy services, Autistic advocacy updates

**In-app purchases:** none


### Behavior Observer

[App page](https://appshunter.io/ios/app/behavior-observer/id6789358581)

This app simplifies data collection and analysis for educational professionals. It offers multiple observation methods and generates instant reports for IEPs, FBAs, and clinical decisions. Features include frequency, duration, time sampling, ABC, and latency tracking, with Apple Watch integration for discreet data capture.

**Highlights:** Multiple observation methods (Frequency, Duration, Time Sampling, ABC, Latency), Instant report generation for IEPs and FBAs, Apple Watch integration for discreet data collection, Customizable behavior and antecedent/consequence banks, Automatic charts and printable PDF reports, Data export to Excel

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Behavior Observer Pro | $49.99 | per year |
| Behavior Observer Pro Lifetime | $149.00 | one-time |


## Frequently asked questions

### Is Full Spectrum ABA free?

Full Spectrum ABA is free to download, with no in-app purchases.

### Is Behavior Observer free?

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

### Which has better reviews, Full Spectrum ABA or Behavior Observer?

Full Spectrum ABA and Behavior Observer are both rated 5.0 out of 5 on the App Store, from 62 and 1 ratings respectively.

### Do Full Spectrum ABA or Behavior Observer have ads?

Neither Full Spectrum ABA nor Behavior Observer shows ads.

### Which is updated more often, Full Spectrum ABA or Behavior Observer?

Full Spectrum ABA ships an update every 2 months, and Behavior Observer every 2 months. Most recently, Full Spectrum ABA was updated on November 3, 2026 and Behavior Observer on October 31, 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.*