# Filtrete Smart vs TRAPP Diffuser

The clearest difference is ads: TRAPP Diffuser at none against Filtrete Smart's shown. TRAPP Diffuser also leads on iOS requirement (11.0 vs 15.0). Filtrete Smart's advantage is update cadence (every 2 months vs every 12 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.

Filtrete Smart ships an update every 2 months, TRAPP Diffuser every 12 months. The most recent releases landed on September 27, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Filtrete Smart | TRAPP Diffuser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (52K ratings)](https://appshunter.io/ios/app/filtrete-smart/id1340390225/reviews)** | — |
| Number of ratings | **52K** | — |
| Positive reviews | 38.8% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 100 MB | 173 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [3M Company](https://appshunter.io/developer/396772465) | [Dongguan Yih-Teh Electric Products Co., Ltd.](https://appshunter.io/developer/1604523226) |

## What reviewers say

### Filtrete Smart

[App page](https://appshunter.io/ios/app/filtrete-smart/id1340390225)

Manage your home's air quality with smart filter and purifier control. Receive personalized tips, alerts for filter replacement based on usage, and monitor outdoor air quality trends.

**Highlights:** Pair multiple smart air filters, Real-time filter life tracking, Smart air purifier control, Remote device management, Non-smart filter reminders, Outdoor air quality monitoring

**In-app purchases:** none

**What reviewers like**

- 👍 Useful app for monitoring air filters
- 🚀 Convenient filter replacement reminders
- 👍 Helps track filter life and air quality
- 🚀 Easy to use and set up
- 👍 Improves indoor air quality

**What reviewers complain about**

- 🐛 Connectivity issues with filters
- 🐛 Inaccurate filter life estimates
- 🔋 High battery drain on mobile app
- 🔒 Privacy concerns with location tracking
- 💰 Expensive filters compared to regular ones

**Reported bugs**

- Barcode scanning feature not working
- App crashes when trying to add new filters
- Bluetooth connection frequently lost
- Incorrect filter life displayed in app

**Requested features**

- Allow manual filter life input
- Provide more detailed air quality data
- Integrate with other smart home systems
- Add option to disable location tracking
- Improve app stability and reliability


### TRAPP Diffuser

[App page](https://appshunter.io/ios/app/trapp-diffuser/id1604523223)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Filtrete Smart free?

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

### Is TRAPP Diffuser free?

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

### Do Filtrete Smart or TRAPP Diffuser have ads?

Filtrete Smart shows ads; TRAPP Diffuser does not.

### Which is updated more often, Filtrete Smart or TRAPP Diffuser?

Filtrete Smart ships an update every 2 months, and TRAPP Diffuser every 12 months. Most recently, Filtrete Smart was updated on September 27, 2026 and TRAPP Diffuser on September 15, 2026.

---

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