# HUUM vs Impromptu!

The clearest difference is update cadence: Impromptu! at every 4 days against HUUM's monthly. 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.

HUUM ships an update monthly, Impromptu! every 4 days. The most recent releases landed on November 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | HUUM | Impromptu! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (30 ratings)](https://appshunter.io/ios/app/huum/id896161044/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 10.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free | — |
| Size | 66 MB | 3 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [HUUM](https://appshunter.io/developer/896161047) | [ISAAC ANTHONY SUTHERLAND](https://appshunter.io/developer/1895799612) |

## What reviewers say

### HUUM

[App page](https://appshunter.io/ios/app/huum/id896161044)

Control your sauna remotely with this app. Schedule heating times and receive notifications when your sauna reaches the desired temperature, ensuring a perfectly heated experience upon arrival.

**Highlights:** Remote sauna heating, Scheduled heating times, Calendar bookings, Temperature notifications, Mobile control

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

**In-app purchases:** none

**What reviewers like**

- ✅ Basic functionality works when stable
- 🎯 Simple on/off controls
- 📱 Remote control capability (when functioning)
- ⏱️ Scheduling feature available
- 🌡️ Temperature adjustment possible

**What reviewers complain about**

- 🐛 Extremely unreliable and buggy
- ❌ Frequent app crashes and freezes
- 🔌 Constant WiFi connectivity issues
- ⏱️ Long response delays (2-3 minutes)
- 🌍 Random language switching problems

**Reported bugs**

- App randomly switches to Estonian/Finnish/Swedish
- Temperature control stops working after updates
- Scheduler/timer functionality broken
- Remote start feature randomly disables
- App won't open or becomes unresponsive

**Requested features**

- Apple Watch app support
- Dynamic Island integration
- Temperature reached notifications
- Ability to cancel/edit bookings
- Google Home/Alexa integration


### Impromptu!

[App page](https://appshunter.io/ios/app/impromptu/id6792591309)

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

**In-app purchases:** none


## Frequently asked questions

### Is HUUM free?

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

### Is Impromptu! free?

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

### Do HUUM or Impromptu! have ads?

Neither HUUM nor Impromptu! shows ads.

### Which is updated more often, HUUM or Impromptu!?

HUUM ships an update monthly, and Impromptu! every 4 days. Most recently, HUUM was updated on November 1, 2026 and Impromptu! on October 13, 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.*