# KAATSU Connect vs IASIS Application

The clearest difference is update cadence: IASIS Application at every 11 days against KAATSU Connect's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KAATSU Connect ships an update every 6 weeks, IASIS Application every 11 days. The most recent releases landed on October 5, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | KAATSU Connect | IASIS Application |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (13 ratings)](https://appshunter.io/ios/app/kaatsu-connect/id1604116828/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Free | — |
| Size | 17 MB | 22 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [KAATSU Global, Inc.](https://appshunter.io/developer/1541903350) | [Iasis Technologies Corporation](https://appshunter.io/developer/1676399593) |

## What reviewers say

### KAATSU Connect

[App page](https://appshunter.io/ios/app/kaatsu-connect/id1604116828)

This app connects to specialized Bluetooth-enabled bands to help users improve fitness, speed up recovery, or aid in rehabilitation. It allows for setting target pressure levels for a personalized blood flow restriction training experience.

**Highlights:** Connects to KAATSU Bluetooth bands, Set target pressure levels, Blood Flow Restriction (BFR) training, Fitness improvement, Recovery acceleration, Rehabilitation support

**In-app purchases:** none


### IASIS Application

[App page](https://appshunter.io/ios/app/iasis-application/id6446163219)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KAATSU Connect free?

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

### Is IASIS Application free?

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

### Do KAATSU Connect or IASIS Application have ads?

Neither KAATSU Connect nor IASIS Application shows ads.

### Which is updated more often, KAATSU Connect or IASIS Application?

KAATSU Connect ships an update every 6 weeks, and IASIS Application every 11 days. Most recently, KAATSU Connect was updated on October 5, 2026 and IASIS Application on October 18, 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.*