# Sauna_Control vs iMeter Reader

The clearest difference is update cadence: iMeter Reader at every 6 days against Sauna_Control's every 2 months. Sauna_Control's advantage is iOS requirement (13.0 vs 15.0). 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.

Sauna_Control ships an update every 2 months, iMeter Reader every 6 days. The most recent releases landed on May 31, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Sauna_Control | iMeter Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Size | 27 MB | 121 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Hefei Yingzhili Electronic Science & Technology Co., Ltd.](https://appshunter.io/developer/1845038610) | [Ahmad AlAlloush](https://appshunter.io/developer/1851833496) |

## What reviewers say

### Sauna_Control

[App page](https://appshunter.io/ios/app/sauna-control/id6753788336)

**Features:** macOS Compatibility

**In-app purchases:** none


### iMeter Reader

[App page](https://appshunter.io/ios/app/imeter-reader-meter-tracker/id6759241901)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sauna_Control free?

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

### Is iMeter Reader free?

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

### Do Sauna_Control or iMeter Reader have ads?

Neither Sauna_Control nor iMeter Reader shows ads.

### Which is updated more often, Sauna_Control or iMeter Reader?

Sauna_Control ships an update every 2 months, and iMeter Reader every 6 days. Most recently, Sauna_Control was updated on May 31, 2026 and iMeter Reader on September 21, 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.*