# Naturbasen vs CTSmall heat pump controller

The clearest difference is update cadence: Naturbasen at every 2 months against CTSmall heat pump controller's every 15 months. CTSmall heat pump controller's advantage is iOS requirement (7.0 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.

Naturbasen ships an update every 2 months, CTSmall heat pump controller every 15 months. The most recent releases landed on September 17, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Naturbasen | CTSmall heat pump controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/ctsmall-heat-pump-controller/id868825104/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 15 months |
| Monetization | — | Free |
| Size | 62 MB | 11 MB |
| Requires iOS | 15.0 | **7.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Trifork A/S](https://appshunter.io/developer/323994904) | [Flemming Veng](https://appshunter.io/developer/868825107) |

## What reviewers say

### Naturbasen

[App page](https://appshunter.io/ios/app/naturbasen/id531282316)

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

**In-app purchases:** none


### CTSmall heat pump controller

[App page](https://appshunter.io/ios/app/ctsmall-heat-pump-controller/id868825104)

Remotely manage your heat pump's temperature and settings from anywhere. Control heating, cooling, and even additional relay outputs like water heaters. Receive alerts and ensure your home is always at the desired temperature.

**Highlights:** Remote heat pump control, Temperature adjustment, Control of two relay outputs, Power guard functionality, Alarm output, Supports over 35 heat pump brands, Event system for custom actions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Naturbasen free?

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

### Is CTSmall heat pump controller free?

CTSmall heat pump controller is free to download, with no in-app purchases.

### Do Naturbasen or CTSmall heat pump controller have ads?

Neither Naturbasen nor CTSmall heat pump controller shows ads.

### Which is updated more often, Naturbasen or CTSmall heat pump controller?

Naturbasen ships an update every 2 months, and CTSmall heat pump controller every 15 months. Most recently, Naturbasen was updated on September 17, 2026 and CTSmall heat pump controller on September 14, 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.*