# IKI vs Sauna Tracker & Session Log

The clearest difference is update cadence: Sauna Tracker & Session Log at every 4 months against IKI's every 21 months. IKI's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

IKI ships an update every 21 months, Sauna Tracker & Session Log every 4 months. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | IKI | Sauna Tracker & Session Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/iki/id1577358573/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 42 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HUUM](https://appshunter.io/developer/896161047) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### IKI

[App page](https://appshunter.io/ios/app/iki/id1577358573)

Control your Finnish sauna heater remotely from your smartphone. Schedule heating times and monitor the temperature to ensure a perfectly hot sauna experience upon arrival.

**Highlights:** Remote sauna heating, Temperature monitoring, Timed start functionality, Calendar style bookings, Heating notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Sauna Tracker & Session Log

[App page](https://appshunter.io/ios/app/sauna-tracker-and-session-log/id6772261621)

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

**In-app purchases:** none


## Frequently asked questions

### Is IKI free?

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

### Is Sauna Tracker & Session Log free?

Sauna Tracker & Session Log is free to download, with no in-app purchases.

### Do IKI or Sauna Tracker & Session Log have ads?

Neither IKI nor Sauna Tracker & Session Log shows ads.

### Which is updated more often, IKI or Sauna Tracker & Session Log?

IKI ships an update every 21 months, and Sauna Tracker & Session Log every 4 months. Most recently, IKI was updated on October 2, 2026 and Sauna Tracker & Session Log 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.*