# ThermoTimer vs CarbSync

The clearest difference is price: CarbSync at Free against ThermoTimer's $4.99. CarbSync also leads on in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

CarbSync is free to download; ThermoTimer costs $4.99 up front. ThermoTimer sells 1 one-off in-app purchase. CarbSync asks for nothing beyond the download.

## The numbers

| Metric | ThermoTimer | CarbSync |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 8 MB | 4 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andy Arevalo](https://appshunter.io/developer/1853674132) | [文权 刘](https://appshunter.io/developer/1874766464) |

## What reviewers say

### ThermoTimer

[App page](https://appshunter.io/ios/app/thermotimer/id6755892933)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThermoTimer Pro | $4.99 | one-time |


### CarbSync

[App page](https://appshunter.io/ios/app/carbsync-macro-tracker/id6758784101)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ThermoTimer free?

ThermoTimer costs $4.99, and also offers in-app purchases.

### Is CarbSync free?

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

### Do ThermoTimer or CarbSync have ads?

Neither ThermoTimer nor CarbSync shows ads.

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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.*