# CI Smart Sensor vs Engbird

The clearest difference is review sentiment: CI Smart Sensor at 69% against Engbird's 13%. CI Smart Sensor also leads on rating (4.2 vs 1.8) and ratings volume (358 vs 37). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CI Smart Sensor holds the better App Store score, 4.2 against 1.8. That said, the two scores are not equally well evidenced: CI Smart Sensor has 358 ratings behind it against 37, so its average is the more settled of the two. Written reviews point the same way: 69% of CI Smart Sensor's written reviews are positive against 13% of Engbird's.

CI Smart Sensor ships an update every 2 months, Engbird every 6 weeks. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | CI Smart Sensor | Engbird |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (358 ratings)](https://appshunter.io/ios/app/ci-smart-sensor/id1281682435/reviews)** | [1.8 (37 ratings)](https://appshunter.io/ios/app/engbird/id1282420032/reviews) |
| Number of ratings | **358** | 37 |
| Positive reviews | **68.9% of reviews** | 13.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 52 MB | 17 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [BPA Sales, LP](https://appshunter.io/developer/1671653832) | [Shenzhen Inkbird Technology Co. Ltd](https://appshunter.io/developer/1163595178) |

## What reviewers say

### 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


### Engbird

[App page](https://appshunter.io/ios/app/engbird/id1282420032)

Monitor environmental conditions like temperature and humidity with smart sensors. View real-time and historical data, export it, and manage multiple devices and users. Supports various sampling intervals and multiple languages.

**Highlights:** Real-time temperature and humidity display, Configurable sampling intervals, Historical data viewing (day, week, month, year), CSV data export, Multi-sensor and multi-user support, Multi-language support

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works well
- 👍 Simple and easy to use
- 👍 Stores historical data
- 👍 Graphs temperature and humidity
- 👍 Bluetooth connectivity works well

**What reviewers complain about**

- 🐛 Crashes on launch after updates
- 🐛 Unreliable connection and data collection
- 🐛 Inaccurate temperature and humidity readings
- 🐛 Graphs and UI are difficult to use
- 🔋 Drains batteries quickly

**Reported bugs**

- App crashes on startup after updates
- Bluetooth connection issues, sensors not detected
- Temperature and humidity values displayed incorrectly
- Graph time scales do not match actual data
- Sensor names not displayed in app

**Requested features**

- Add push notifications for temperature/humidity alerts
- Improve graph functionality (zoom, customize, etc.)
- Allow calibration of temperature and humidity sensors
- Provide more detailed historical data export options
- Add support for multiple sensors/devices in one view


## Frequently asked questions

### Is CI Smart Sensor free?

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

### Is Engbird free?

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

### Which has better reviews, CI Smart Sensor or Engbird?

CI Smart Sensor is rated higher. CI Smart Sensor averages 4.2 out of 5 from 358 ratings, while Engbird averages 1.8 from 37 ratings.

### Do CI Smart Sensor or Engbird have ads?

Neither CI Smart Sensor nor Engbird shows ads.

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

CI Smart Sensor ships an update every 2 months, and Engbird every 6 weeks. Most recently, CI Smart Sensor was updated on October 7, 2026 and Engbird on October 13, 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.*