# BehaviorSnap vs BDI

The clearest difference is price: BDI at Free against BehaviorSnap's $9.99. BDI also leads on in-app purchases (none vs 10) and iOS requirement (13.0 vs 15.5). BehaviorSnap's advantage is rating (4.5 vs 2.3) and ratings volume (415 vs 6). On ads there is nothing between them.

BDI is free to download; BehaviorSnap costs $9.99 up front. BehaviorSnap sells 10 in-app purchases, starting at $2.99 per month. BDI asks for nothing beyond the download.

BehaviorSnap holds the better App Store score, 4.5 against 2.3. That said, the two scores are not equally well evidenced: BehaviorSnap has 415 ratings behind it against 6, so its average is the more settled of the two.

BehaviorSnap ships an update every 3 weeks, BDI every 2 months. The most recent releases landed on September 20, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | BehaviorSnap | BDI |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.5 (415 ratings)](https://appshunter.io/ios/app/behaviorsnap/id459755410/reviews)** | [2.3 (6 ratings)](https://appshunter.io/ios/app/bdi-3-mobile-data-solution/id1532433975/reviews) |
| Number of ratings | **415** | 6 |
| Positive reviews | 47.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#189** | — |
| Size | 4 MB | 208 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [SuperPsyched, LLC](https://appshunter.io/developer/459755413) | [RiversideInsights](https://appshunter.io/developer/1483738140) |

## What reviewers say

### BehaviorSnap

[App page](https://appshunter.io/ios/app/behaviorsnap/id459755410)

**Currently charting:** #189 Top Paid · Education (US App Store)

This app simplifies systematic behavior observations and generates easy-to-understand graphs for informed decision-making. It helps professionals save time on data compilation, allowing them to focus on building connections and making a difference.

**Highlights:** Four observation tools: Interval, ABC, Duration, Frequency, Customizable for individual student needs, Efficient and consistent data tracking, Meaningful and easy-to-read graphs, Email, print, or attach reports

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Introductory | $2.99 | per month |
| Introductory | $3.99 | per month |
| Keen Observer | $7.99 | per 3 months |
| Keen Observer | $9.99 | per 3 months |
| Veteran Pro | $19.99 | per year |
| Veteran Pro | $29.99 | per year |
| New User Subscription - 1 Month | $3.99 | one-time |
| New User Subscription - 3 Months | $9.99 | one-time |
| Existing User Subscription - 12 Months | $19.99 | one-time |
| New User Subscription - 12 Months | $29.99 | one-time |

**What reviewers like**

- 👍 User-friendly design
- 📊 Great reports and graphs
- 💡 Useful for observations
- ✅ Professional printouts
- 🚀 Makes data collection easier

**What reviewers complain about**

- 💸 Charged for app and subscriptions
- 💰 Deceptive marketing/rip off
-  limited access after purchase
- 😩 Difficult to use
-  lost data due to saving issues

**Reported bugs**

- App crashes when generating reports
- Reports not generated or partially generated
- Cannot print or email reports
- Report viewer screen freezes
- Cannot combine reports

**Requested features**

- Add customized behaviors
- Ability to edit observation data after recording
- Peer comparison frequency observations
- Ability to fully set up observations ahead of time
- Ability to edit default A, B, C choices


### BDI

[App page](https://appshunter.io/ios/app/bdi-3-mobile-data-solution/id1532433975)

This application assists in administering clinical assessments for child development. It offers guided digital support for scoring, timers, and reporting, functioning both online and offline. Users can manage student data and sync assessments for web-based access.

**Highlights:** Online and offline assessment administration, Guided digital scoring assistance, Basal and ceiling indicators, Built-in timers, Modular reporting options, Student data management

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BehaviorSnap free?

BehaviorSnap costs $9.99, and also offers in-app purchases.

### Is BDI free?

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

### Which has better reviews, BehaviorSnap or BDI?

BehaviorSnap is rated higher. BehaviorSnap averages 4.5 out of 5 from 415 ratings, while BDI averages 2.3 from 6 ratings.

### Do BehaviorSnap or BDI have ads?

Neither BehaviorSnap nor BDI shows ads.

### Which is updated more often, BehaviorSnap or BDI?

BehaviorSnap ships an update every 3 weeks, and BDI every 2 months. Most recently, BehaviorSnap was updated on September 20, 2026 and BDI on August 22, 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.*