# Opro9 SmartDiaper vs Numah.AI

The clearest difference is update cadence: Numah.AI at every 11 days against Opro9 SmartDiaper's monthly. Opro9 SmartDiaper's advantage is iOS requirement (12.4 vs 15.1). On price, ads, 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.

Opro9 SmartDiaper ships an update monthly, Numah.AI every 11 days. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Opro9 SmartDiaper | Numah.AI |
| --- | --- | --- |
| 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 | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free | — |
| Size | 30 MB | 24 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CviLux Corporation](https://appshunter.io/developer/895729968) | [Guy Levy](https://appshunter.io/developer/1797936287) |

## 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


### Numah.AI

[App page](https://appshunter.io/ios/app/numahai/id6745524669)

**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 Numah.AI free?

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

### Do Opro9 SmartDiaper or Numah.AI have ads?

Neither Opro9 SmartDiaper nor Numah.AI shows ads.

### Which is updated more often, Opro9 SmartDiaper or Numah.AI?

Opro9 SmartDiaper ships an update monthly, and Numah.AI every 11 days. Most recently, Opro9 SmartDiaper was updated on October 22, 2026 and Numah.AI on October 25, 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.*