# Hygrometer Barometer vs CI Smart Sensor

The clearest difference is in-app purchases: CI Smart Sensor at none against Hygrometer Barometer's 1. CI Smart Sensor also leads on ads (none vs shown) and update cadence (every 2 months vs every 7 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Hygrometer Barometer sells 1 one-off in-app purchase. CI Smart Sensor asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for Hygrometer Barometer against 4.2 for CI Smart Sensor. Both are backed by a comparable volume of ratings — 152 and 358 respectively. Written reviews are what separate them: 73% of Hygrometer Barometer's written reviews are positive against 69% of CI Smart Sensor's.

Hygrometer Barometer ships an update every 7 months, CI Smart Sensor every 2 months. The most recent releases landed on September 22, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Hygrometer Barometer | CI Smart Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (152 ratings)](https://appshunter.io/ios/app/hygrometer-barometer/id888520226/reviews)** | [4.2 (358 ratings)](https://appshunter.io/ios/app/ci-smart-sensor/id1281682435/reviews) |
| Number of ratings | 152 | **358** |
| Positive reviews | **72.7% of reviews** | 68.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Ad-supported | **Free** |
| Size | 11 MB | 52 MB |
| Requires iOS | 13 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [BPA Sales, LP](https://appshunter.io/developer/1671653832) |

## What reviewers say

### Hygrometer Barometer

[App page](https://appshunter.io/ios/app/hygrometer-barometer/id888520226)

This app measures relative humidity and calculates the discomfort index using your current location. It displays humidity in a badge and offers barometric readings for compatible devices. Use it to gauge outdoor conditions for appropriate clothing choices.

**Highlights:** Measures relative humidity via GPS, Calculates discomfort index (DI), Displays humidity in badge, Barometric pressure readings (iPhone 6+), Outdoor humidity reference

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### CI Smart Sensor

[App page](https://appshunter.io/ios/app/ci-smart-sensor/id1281682435)

Monitor humidity and temperature in your humidor or container remotely. Receive alerts for out-of-range conditions or unauthorized access. Analyze historical data to optimize storage and protect your valuables.

**Highlights:** Continuous humidity and temperature gauging, Push notifications for custom ranges, Alerts for container access, Hourly, daily, and monthly data analysis, Bluetooth Low Energy connectivity, Remote monitoring

**In-app purchases:** none

**What reviewers like**

- 📊 Accurate humidity and temperature readings
- 🔍 Helpful for monitoring cigar humidors
- 🔋 Long-lasting battery life
- 🔧 Easy to calibrate

**What reviewers complain about**

- 🐛 Connectivity issues and app crashes
- 🕰️ Slow app performance and delayed updates
- 🔔 Unreliable push notifications
- 🤖 Forced account creation

**Reported bugs**

- Sensor readings not updating in real-time
- Calibration process not working as expected
- Battery draining faster than expected
- App losing historic data after updates

**Requested features**

- Wi-Fi connectivity for remote monitoring
- Customizable alert thresholds
- Ability to rearrange sensor order in app
- Bring back analog hygrometer display


## Frequently asked questions

### Is Hygrometer Barometer free?

Hygrometer Barometer is free to download, with in-app purchases available.

### Is CI Smart Sensor free?

CI Smart Sensor is free to download, with no in-app purchases.

### Which has better reviews, Hygrometer Barometer or CI Smart Sensor?

Hygrometer Barometer is rated higher. Hygrometer Barometer averages 4.3 out of 5 from 152 ratings, while CI Smart Sensor averages 4.2 from 358 ratings.

### Do Hygrometer Barometer or CI Smart Sensor have ads?

Hygrometer Barometer shows ads; CI Smart Sensor does not.

### Which is updated more often, Hygrometer Barometer or CI Smart Sensor?

Hygrometer Barometer ships an update every 7 months, and CI Smart Sensor every 2 months. Most recently, Hygrometer Barometer was updated on September 22, 2026 and CI Smart Sensor on October 7, 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.*