# OttoPilot vs Sereniby

The clearest difference is rating: Sereniby at 3.8 against OttoPilot's 2.2. Sereniby also leads on review sentiment (50% vs 17%) and iOS requirement (13.0 vs 15.6). OttoPilot's advantage is ratings volume (30 vs 5). 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.

Sereniby holds the better App Store score, 3.8 against 2.2. That said, the two scores are not equally well evidenced: OttoPilot has 30 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 17% of OttoPilot's written reviews are positive against 50% of Sereniby's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 16, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | OttoPilot | Sereniby |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (30 ratings)](https://appshunter.io/ios/app/ottopilot/id6449269013/reviews) | **[3.8 (5 ratings)](https://appshunter.io/ios/app/sereniby/id6569216382/reviews)** |
| Number of ratings | **30** | 5 |
| Positive reviews | 16.7% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 67 MB | 116 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Cartizan Technology Co., Ltd.](https://appshunter.io/developer/1434040269) | [Sereniby, Inc.](https://appshunter.io/developer/1758798147) |

## What reviewers say

### 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


### Sereniby

[App page](https://appshunter.io/ios/app/sereniby/id6569216382)

Control your smart air purifier remotely, monitor your baby's room environment in real-time, and receive maintenance alerts. Optimize air quality and comfort with customizable schedules and automatic adjustments for a safe and healthy space.

**Highlights:** Remote smart purifier control, Real-time air quality monitoring, Customizable schedules, Automatic purification adjustments, Maintenance reminders and filter ordering

**In-app purchases:** none


## Frequently asked questions

### Is OttoPilot free?

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

### Is Sereniby free?

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

### Which has better reviews, OttoPilot or Sereniby?

Sereniby is rated higher. OttoPilot averages 2.2 out of 5 from 30 ratings, while Sereniby averages 3.8 from 5 ratings.

### Do OttoPilot or Sereniby have ads?

Neither OttoPilot nor Sereniby shows ads.

### Which is updated more often, OttoPilot or Sereniby?

OttoPilot ships an update every 3 weeks, and Sereniby every 3 weeks. Most recently, OttoPilot was updated on September 16, 2026 and Sereniby on June 5, 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.*