# Dew Point Calc

> Calculate dew point and relative humidity using known air temperature and one other reading. (iPhone/iPad app by Unlikely Reality Software.)

- Source: https://appshunter.io/ios/app/dew-point-calc/id457306600 (this page in markdown: same URL + `.md`)
- Developer: [Unlikely Reality Software](https://appshunter.io/developer/457306603)
- Category: Weather, Utilities
- Price: Free
- Rating: 3.50/5 from 15 App Store ratings · 29 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 9 MB
- Languages: American English
- Released: 2011-08-20
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dew-point-calc/id457306600/reviews.md

## What is Dew Point Calc?

Calculate the relative humidity or dew point of the air around you.  Quickly determine the dry bulb temperature (air temperature), relative humidity percentage, or dew point temperature if you know the readings of the other two.  A great companion to home weather stations.  Supports imperial and metric units.

- Calculate dry bulb temperature (air temperature), humidity percentage, or dew point temperature
- Conveniently switch between calculations for the desired temperature or percentage
- Enter units in °F or °C

## Key features

- Calculate dew point temperature
- Calculate relative humidity percentage
- Calculate dry bulb temperature
- Switch between calculation types
- Supports imperial and metric units

## Recent user reviews (10 of 29)

All indexed reviews: https://appshunter.io/ios/app/dew-point-calc/id457306600/reviews.md

### 5/5 — Works Great with IOS 15.x and iPhone 12!

*2022-08-10, version 2.0.1*

First of all: I have been writing software (you guys call it coding.) since your parents were in diapers ;) I actually forgot I had this app - was searching and found I had it. No update was offered so I just “opened” it. Works great. Nice simple, clean interface. Keyboard entry works flawlessly. No ads!! Who could ask for anything more! Kudos to the developer. Reminds me of the good old shareware days, when I would happily donate a few bucks rather than write the code for myself. If you are a weather bug, like me, and appreciate simple things that work - get it!

### 1/5 — Keyboard not always work

*2021-06-18, version 2.0.1*

Unbelievable how a simple app can get out of wack with the own keypad. Not sure why it has its own keypad either...

### 5/5 — Works well & no ads!!

*2021-06-10, version 2.0.1*

Tried every dewpoint calculator app I could find and this one simply does the job without ads. Thanks!

### 1/5 — No longer works.

*2020-11-20, version 2.0.1*

This app does not work with IOS 14.

### 1/5 — Doesn’t work with iOS 14

*2020-11-11, version 2.0.1*

When I try to open with my iPhone XR, the app closes as soon as it opens.

### 3/5 — buggy

*2019-06-08, version 2.0.1*

after calculating dew point, i switch to calculating RH%, but cannot enter temperature directly. Can only adjust by 0.1 using arrow keys.

### 5/5 — I love it.

*2018-10-15, version 2.0.1*

I love it, it's very useful. The only thing I would change is, instead of having the app calculating the value while I'm changing the numbers, I would like to have a "calculate" button, so that I can press it after I've entered the numbers.

### 2/5 — Perfect... WHEN it works

*2018-01-27, version 2.0.1*

It’s impossible to enter values for temperature with the number pad. The fields for DewPoint and humidity work fine. Yeah, the work around is to tap the up/down arrows 600 times to go from outdoor temperature to indoor temperature. Not gonna do that. If that glitch gets fixed it’s a 5 Star app. I recommend you download and try this app. If it works on your device it will be perfect.

### 4/5 — Badly needed a 10-key input

*2017-08-30, version 2.0.1*

Good app, but what a terrible choice to use a full QWERTY keyboard to enter numbers when all that is needed is a 10-key.

Other apps have it, so I know it's possible.  I see it come up when I have to enter a ZIP Code in a form.

UPDATE Aug 2017:

10-key input has arrived!  Fabulous!

UPDATE 29-Aug:

When solving for RH, you can't enter a number for temperature via the 10-key. Only via the arrows.  Also, the x doesn't work to clear it.

### 5/5 — A perfect, simple dew point and RH app

*2017-08-21, version 2.0.1*

Simple is good; one screen that does quick Calc for dew point and RH, and it's free!  Thanks!!

## Frequently asked questions about Dew Point Calc

### What does Dew Point Calc do?

Dew Point Calc helps you determine the relative humidity or dew point of the air. You can input two known values, such as the dry bulb temperature and relative humidity, to calculate the third.

### What are the key features of Dew Point Calc?

The app allows you to calculate dry bulb temperature, relative humidity percentage, or dew point temperature. It also offers convenient switching between calculation types and supports both imperial and metric units.

### Is Dew Point Calc free to use?

Yes, Dew Point Calc is a free application. There are no costs associated with downloading or using its features.

### What units does Dew Point Calc support?

The application supports both imperial and metric units for temperature readings. You can enter values in degrees Fahrenheit (°F) or degrees Celsius (°C) as needed.

### Who would find Dew Point Calc useful?

This app is ideal for anyone interested in understanding atmospheric conditions, such as weather enthusiasts, gardeners, or individuals who use home weather stations and need to interpret their readings accurately.

## Version history (last 4 releases)

### 2.0.1 — 2017-08-20

This update from Apple will improve the functionality of this app. No new features are included.

Fixed a crash on devices running iOS 9.

### 2.0.0 — 2017-08-17

Updated for iOS 10 and latest hardware.

New features include:
  - Numeric keypad entry
  - Localized number display
  - Auto-repeating buttons

Still ad-free and no tracking!

### 1.0.1 — 2011-09-15

Bug fixes and stability improvements

### 1.0 — 2011-08-19

No release notes.

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## Related topics

[dew point calculator](https://appshunter.io/ios/topics/dew-point-calculator) · [dew point temperature](https://appshunter.io/ios/topics/dew-point-temperature) · [dew point humidity calculator](https://appshunter.io/ios/topics/dew-point-humidity-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*