# Feng Shui Master vs IISCA+

The clearest difference is price: IISCA+ at $6.99 against Feng Shui Master's $22.99. IISCA+ also leads on chart position (#187 vs unranked). Feng Shui Master's advantage is in-app purchases (none vs 1) and review sentiment (57% vs 33%). On update cadence, ads, monetization model and device support there is nothing between them.

Feng Shui Master costs $22.99 and IISCA+ $6.99 up front. IISCA+ sells 1 in-app purchase, starting at $19.49 per year. Feng Shui Master asks for nothing beyond the download.

Feng Shui Master ships an update every 2 months, IISCA+ every 6 weeks. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Feng Shui Master | IISCA+ |
| --- | --- | --- |
| Price | $22.99 | **$6.99** |
| Rating | — | **[3.1 (14 ratings)](https://appshunter.io/ios/app/iisca-plus/id1478619988/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | **57.1% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#187** |
| Size | 61 MB | 41 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Takis Karagiannopoulos](https://appshunter.io/developer/629300107) | [Garage94 S.r.l.](https://appshunter.io/developer/1478619987) |

## What reviewers say

### Feng Shui Master

[App page](https://appshunter.io/ios/app/feng-shui-master/id669003999)

This professional tool helps users master Feng Shui principles, offering detailed calculations for Flying Stars, Water Methods, Xuan Kong Da Gua, and date selection. It also includes Ba Zi and Nine Star Ki astrology, providing comprehensive insights for practitioners and beginners alike.

**Highlights:** Flying Stars Feng Shui calculations, Water Methods techniques, Xuan Kong Da Gua analysis, Ze Ri date selection, Ba Zi - Four Pillars Astrology, Nine Star Ki Astrology, Ming Gua (Life Gua) Chart

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

**In-app purchases:** none


### IISCA+

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

**Currently charting:** #187 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 |


## Frequently asked questions

### Is Feng Shui Master free?

Feng Shui Master costs $22.99, with no in-app purchases.

### Is IISCA+ free?

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

### Do Feng Shui Master or IISCA+ have ads?

Neither Feng Shui Master nor IISCA+ shows ads.

### Which is updated more often, Feng Shui Master or IISCA+?

Feng Shui Master ships an update every 2 months, and IISCA+ every 6 weeks. Most recently, Feng Shui Master was updated on October 15, 2026 and IISCA+ on October 1, 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.*