# CI Smart Sensor vs Service First

The clearest difference is rating: CI Smart Sensor at 4.2 against Service First's 3.6. CI Smart Sensor also leads on ads (none vs shown) and ratings volume (358 vs 16). Service First's advantage is update cadence (every 2 weeks vs every 2 months). On price, in-app purchases and device support 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 3.6. That said, the two scores are not equally well evidenced: CI Smart Sensor has 358 ratings behind it against 16, 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 55% of Service First's.

CI Smart Sensor ships an update every 2 months, Service First every 2 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CI Smart Sensor | Service First |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (358 ratings)](https://appshunter.io/ios/app/ci-smart-sensor/id1281682435/reviews)** | [3.6 (16 ratings)](https://appshunter.io/ios/app/service-first-flag-alerts/id6747616299/reviews) |
| Number of ratings | **358** | 16 |
| Positive reviews | **68.9% of reviews** | 54.5% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 52 MB | 23 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [BPA Sales, LP](https://appshunter.io/developer/1671653832) | [Service First Flagpole](https://appshunter.io/developer/1833520097) |

## 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


### Service First

[App page](https://appshunter.io/ios/app/service-first-flag-alerts/id6747616299)

Receive timely alerts for federal and state half-staff observances, and get weather-based notifications for high winds or storms. This app assists homeowners, businesses, schools, and organizations in maintaining flag etiquette and safety with personalized updates.

**Highlights:** Half-staff alerts by state and nation, Weather-based flag lowering notifications, Calendar of upcoming observances, Location-based personalized updates, Flag etiquette guidance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CI Smart Sensor free?

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

### Is Service First free?

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

### Which has better reviews, CI Smart Sensor or Service First?

CI Smart Sensor is rated higher. CI Smart Sensor averages 4.2 out of 5 from 358 ratings, while Service First averages 3.6 from 16 ratings.

### Do CI Smart Sensor or Service First have ads?

Service First shows ads; CI Smart Sensor does not.

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

CI Smart Sensor ships an update every 2 months, and Service First every 2 weeks. Most recently, CI Smart Sensor was updated on October 15, 2026 and Service First on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*