# IISCA+ vs ABC Observe

The clearest difference is review sentiment: ABC Observe at 100% against IISCA+'s 33%. ABC Observe also leads on price (Free vs $6.99) and rating (4.8 vs 3.1). IISCA+'s advantage is chart position (#87 vs unranked). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

ABC Observe is free to download; IISCA+ costs $6.99 up front. IISCA+ sells 1 in-app purchase, starting at $19.49 per year and ABC Observe sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ABC Observe holds the better App Store score, 4.8 against 3.1. Both are backed by a comparable volume of ratings — 14 and 36 respectively. Written reviews point the same way: 33% of IISCA+'s written reviews are positive against 100% of ABC Observe's.

IISCA+ ships an update every 6 weeks, ABC Observe every 5 weeks. The most recent releases landed on September 14, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | IISCA+ | ABC Observe |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [3.1 (14 ratings)](https://appshunter.io/ios/app/iisca-plus/id1478619988/reviews) | **[4.8 (36 ratings)](https://appshunter.io/ios/app/abc-observe/id1545908680/reviews)** |
| Number of ratings | 14 | **36** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#87** | — |
| Size | 41 MB | 52 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Garage94 S.r.l.](https://appshunter.io/developer/1478619987) | [Zhanna Shekhtmeyster](https://appshunter.io/developer/1281984899) |

## What reviewers say

### IISCA+

[App page](https://appshunter.io/ios/app/iisca-plus/id1478619988)

**Currently charting:** #87 Top Paid · Productivity (US App Store)

This app facilitates data collection for IISCA and SBT, which are intervention strategies for treating problem behaviors and developing social repertoires. It's designed to provide a baseline context for effective treatment and skill-building.

**Highlights:** IISCA data collection, SBT intervention support, Problem behavior treatment, Social repertoire development, Baseline context generation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SBT Unlock | $19.49 | per year |


### ABC Observe

[App page](https://appshunter.io/ios/app/abc-observe/id1545908680)

This tool simplifies behavior observation and data collection for understanding why behaviors occur. It helps in functional behavior assessments, progress monitoring, and behavior intervention plan development. Analyze frequency, duration, and ABC data, then export results in various chart formats.

**Highlights:** Simultaneous frequency, duration, and ABC data collection, Export data as CSV, charts, and ABC graphs, Save and share observation templates, Functional Behavior Assessment (FBA) support, Intervention progress monitoring, Behavior Intervention Plan (BIP) development

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $17.99 | per year |
| Forever Edition | $79.99 | one-time |


## Frequently asked questions

### Is IISCA+ free?

IISCA+ costs $6.99, and also offers in-app purchases.

### Is ABC Observe free?

ABC Observe is free to download, with in-app purchases available.

### Which has better reviews, IISCA+ or ABC Observe?

ABC Observe is rated higher. IISCA+ averages 3.1 out of 5 from 14 ratings, while ABC Observe averages 4.8 from 36 ratings.

### Do IISCA+ or ABC Observe have ads?

Neither IISCA+ nor ABC Observe shows ads.

### Which is updated more often, IISCA+ or ABC Observe?

IISCA+ ships an update every 6 weeks, and ABC Observe every 5 weeks. Most recently, IISCA+ was updated on September 14, 2026 and ABC Observe on September 3, 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.*