# Fahrenheit Celsius Calculator vs Carbon Quest

The clearest difference is in-app purchases: Carbon Quest at none against Fahrenheit Celsius Calculator's 5. Carbon Quest also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Fahrenheit Celsius Calculator sells 5 in-app purchases, starting at $1.99 per month. Carbon Quest asks for nothing beyond the download.

Fahrenheit Celsius Calculator ships an update every 2 months, Carbon Quest weekly. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Fahrenheit Celsius Calculator | Carbon Quest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.8K ratings)](https://appshunter.io/ios/app/fahrenheit-celsius-calculator/id1245700611/reviews)** | — |
| Number of ratings | **1.8K** | — |
| Positive reviews | 83.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 16 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Baron](https://appshunter.io/developer/1468892980) | [XPRTIS INC.](https://appshunter.io/developer/1675681944) |

## What reviewers say

### Fahrenheit Celsius Calculator

[App page](https://appshunter.io/ios/app/fahrenheit-celsius-calculator/id1245700611)

Easily convert temperatures between Fahrenheit and Celsius. Access current, historical, and forecasted weather data for any city in both units simultaneously.

**Highlights:** Fahrenheit to Celsius conversion, Celsius to Fahrenheit conversion, City temperature lookup, Historical weather data, Current weather data, Forecasted weather data

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| City Temperatures | $1.99 | per month |
| Yearly | $19.99 | per year |
| Remove Ads | $0.99 | one-time |
| Tip the Developer | $0.99 | one-time |
| Lifetime | $26.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Instant conversion
- 💡 Helpful for international users
- 🚀 Efficient temperature conversion

**What reviewers complain about**

- 🐛 Disappearing calculator
- 🐛 Ads covering buttons
- 🐛 Inability to go back or clear

**Reported bugs**

- Calculator disappearing
- Ads covering buttons
- Inability to go back or clear

**Requested features**

- Labeling the clear button
- Allowing users to enter their own city


### Carbon Quest

[App page](https://appshunter.io/ios/app/carbon-quest/id6475640375)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fahrenheit Celsius Calculator free?

Fahrenheit Celsius Calculator is free to download, with in-app purchases available.

### Is Carbon Quest free?

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

### Do Fahrenheit Celsius Calculator or Carbon Quest have ads?

Fahrenheit Celsius Calculator shows ads; Carbon Quest does not.

### Which is updated more often, Fahrenheit Celsius Calculator or Carbon Quest?

Fahrenheit Celsius Calculator ships an update every 2 months, and Carbon Quest weekly. Most recently, Fahrenheit Celsius Calculator was updated on November 2, 2026 and Carbon Quest on November 8, 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.*