# Smart Purifier vs OttoPilot

The clearest difference is rating: OttoPilot at 2.1 against Smart Purifier's 1.0. OttoPilot also leads on ratings volume (36 vs 2) and review sentiment (15% vs 0%). Smart Purifier's advantage is update cadence (fortnightly vs every 5 weeks) and iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

OttoPilot holds the better App Store score, 2.1 against 1.0. That said, the two scores are not equally well evidenced: OttoPilot has 36 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Smart Purifier's written reviews are positive against 15% of OttoPilot's.

Smart Purifier ships an update fortnightly, OttoPilot every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Smart Purifier | OttoPilot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/smart-purifier/id1535735160/reviews) | **[2.1 (36 ratings)](https://appshunter.io/ios/app/ottopilot/id6449269013/reviews)** |
| Number of ratings | 2 | **36** |
| Positive reviews | 0.0% of reviews | **14.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 115 MB | 51 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [VIETTEL GROUP](https://appshunter.io/developer/1529233160) | [Shenzhen Cartizan Technology Co., Ltd.](https://appshunter.io/developer/1434040269) |

## What reviewers say

### Smart Purifier

[App page](https://appshunter.io/ios/app/smart-purifier/id1535735160)

Monitor and control your Smart Purifier air quality device. View real-time air quality data and adjust settings remotely. Ensure a healthy living environment with this connected appliance management tool.

**Highlights:** Remote device control, Real-time air quality monitoring, Device settings adjustment, Air purification management, Connected appliance integration

**In-app purchases:** none


### OttoPilot

[App page](https://appshunter.io/ios/app/ottopilot/id6449269013)

Enhance your driving with this app, offering a new experience through intuitive guidance and feedback. Access product information, after-sales service, and purchase links directly from your device while on the go.

**Highlights:** Intuitive user guidance, Driving feedback, Product introduction, After-sales service, Product purchase link, Product description

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Purifier free?

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

### Is OttoPilot free?

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

### Which has better reviews, Smart Purifier or OttoPilot?

OttoPilot is rated higher. Smart Purifier averages 1.0 out of 5 from 2 ratings, while OttoPilot averages 2.1 from 36 ratings.

### Do Smart Purifier or OttoPilot have ads?

Neither Smart Purifier nor OttoPilot shows ads.

### Which is updated more often, Smart Purifier or OttoPilot?

Smart Purifier ships an update fortnightly, and OttoPilot every 5 weeks. Most recently, Smart Purifier was updated on November 3, 2026 and OttoPilot on November 3, 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.*