# AIRSTAGE Mobile vs Navien Multikit

The clearest difference is update cadence: AIRSTAGE Mobile at every 2 months against Navien Multikit's every 8 months. 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.

AIRSTAGE Mobile ships an update every 2 months, Navien Multikit every 8 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | AIRSTAGE Mobile | Navien Multikit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (53 ratings)](https://appshunter.io/ios/app/airstage-mobile/id1604379258/reviews)** | — |
| Number of ratings | **53** | — |
| Positive reviews | 25.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 74 MB | 72 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GENERAL Inc.](https://appshunter.io/developer/604826467) | [KD Navien](https://appshunter.io/developer/456445012) |

## What reviewers say

### AIRSTAGE Mobile

[App page](https://appshunter.io/ios/app/airstage-mobile/id1604379258)

Control your Fujitsu General air conditioners remotely using your mobile device. Adjust settings like temperature, fan speed, and operation mode. Schedule weekly timers and receive notifications for errors.

**Highlights:** Remote ON/OFF control, Adjust operation mode and temperature, Set fan speed and airflow direction, Weekly timer scheduling, View operation status, Error display and history, Push notifications

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Works flawlessly (for some)
- 👍 Simple and practical
- 👍 Reliable
- 👍 Gets the job done

**What reviewers complain about**

- 🐛 App is nonfunctional
- 🐛 Communication errors
- 🐛 Cannot log out
- 🐛 Poorly thought out interface
- 🐛 Auto mode has limitations

**Reported bugs**

- Error: 5321
- Communication errors
- Cannot log out
- Auto mode temperature control issues
- App shows incorrect unit status (color)

**Requested features**

- Integrate in HomeKit or Shortcuts
- Add Sleep Timer function for AC
- Allow separate heat and cool settings
- Update app for separate heat/cool settings
- Allow users to schedule fan speeds


### Navien Multikit

[App page](https://appshunter.io/ios/app/navien-multikit/id1636632101)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AIRSTAGE Mobile free?

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

### Is Navien Multikit free?

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

### Do AIRSTAGE Mobile or Navien Multikit have ads?

Neither AIRSTAGE Mobile nor Navien Multikit shows ads.

### Which is updated more often, AIRSTAGE Mobile or Navien Multikit?

AIRSTAGE Mobile ships an update every 2 months, and Navien Multikit every 8 months. Most recently, AIRSTAGE Mobile was updated on November 3, 2026 and Navien Multikit on November 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.*