Doona vs Sereniby
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Doona
This app connects to a car seat alert system to notify parents if a child is left unattended. It features three levels of alarms and can contact emergency contacts if alerts are not acknowledged. The system aims to prevent accidental heatstroke by ensuring children are not left alone in vehicles.
- Child presence detection
- Three alert levels
- Emergency contact notification
- Connects to SensAlert device
- Parental safety monitoring
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The Doona App connects to SensAlert, the only child car seat alert solution with 3 alert levels. SensAlert detects the child on board and warns the parent or caregiver with three incremental levels of alarm if the child is left unattended in the car. If the alerts are not disabled, SensAlert will contact up to 5 emergency contacts that you have defined in the app. Download the Doona App, connect your SensAlert and we’ll take care of the rest!
Sereniby
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.
- Remote smart purifier control
- Real-time air quality monitoring
- Customizable schedules
- Automatic purification adjustments
- Maintenance reminders and filter ordering
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Welcome to Sereniby, the essential companion app for your Sereniby smart purifier. Designed by parents for parents, our app enhances your device's capabilities, with features that include: **Smart Controls: Use the app to control fan speed, purification power, and lighting settings. Customize schedules to fit your baby's sleep routine, ensuring optimal air quality and comfort at all times. **Real-Time Environmental Monitoring & Alerts: Track air quality and temperature in your baby's room with real-time updates and alerts, giving you peace of mind that your baby is always in a safe environment. **Auto Purify Mode: Automatically adjust the fan and purifier settings based on air quality readings, ensuring continuous protection without manual intervention. **Maintenance Reminders: Get notified when it's time to replace the HEPA filter, ensuring your device operates at peak performance. Order replacements directly through the app. Download the Sereniby app now and unlock the full potential of your Sereniby today.
Screenshots
Verdict
The clearest difference is review sentiment: Sereniby at 50% against Doona's 0%. Sereniby also leads on rating (3.8 vs 2.5) and update cadence (every 3 weeks vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 2.5. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews point the same way: 0% of Doona's written reviews are positive against 50% of Sereniby's.
Doona ships an update every 2 months, Sereniby every 3 weeks. The most recent releases landed on September 10, 2026 and June 5, 2026 respectively.
| Parameter | Doona | Sereniby |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (2 ratings) | 3.8 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 87 MB | 116 MB |
| Age rating | 4+ | 4+ |
| Developer | Doona™ Parenting Made Simple | Sereniby, Inc. |
Customer experience
Doona
Sereniby
In-app purchases
Doona
No in-app purchases
Sereniby
No in-app purchases
