# Opro9 SmartDiaper vs WeeBell

The clearest difference is review sentiment: WeeBell at 40% against Opro9 SmartDiaper's 22%. 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.

Opro9 SmartDiaper ships an update monthly, WeeBell every 2 months. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Opro9 SmartDiaper | WeeBell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/opro9-smartdiaper/id1108754105/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 22.2% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 30 MB | 78 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CviLux Corporation](https://appshunter.io/developer/895729968) | [SDsens](https://appshunter.io/developer/1607146534) |

## What reviewers say

### Opro9 SmartDiaper

[App page](https://appshunter.io/ios/app/opro9-smartdiaper/id1108754105)

This app connects to a wearable sensor to detect when a baby wets their diaper. It sends timely notifications to parents, providing information on temperature and humidity levels, and tracks diaper changes. It acts as a high-tech assistant for caretakers.

**Highlights:** Bluetooth sensor connection, Diaper wetness detection, Timely parent notifications, Child temperature and humidity monitoring, Diaper change statistics, Connect to multiple sensors

**In-app purchases:** none


### WeeBell

[App page](https://appshunter.io/ios/app/weebell/id1607146532)

Monitor your baby's diaper status remotely and receive real-time alerts for contamination. Track your child's bowel health with convenient statistics and customize notification settings based on your baby's skin sensitivity.

**Highlights:** Real-time diaper contamination alerts, Child's bowel health statistics, Customizable notification standards, Remote monitoring, Baby skin sensitivity settings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Opro9 SmartDiaper free?

Opro9 SmartDiaper is free to download, with no in-app purchases.

### Is WeeBell free?

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

### Do Opro9 SmartDiaper or WeeBell have ads?

Neither Opro9 SmartDiaper nor WeeBell shows ads.

### Which is updated more often, Opro9 SmartDiaper or WeeBell?

Opro9 SmartDiaper ships an update monthly, and WeeBell every 2 months. Most recently, Opro9 SmartDiaper was updated on October 22, 2026 and WeeBell 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.*