Scentra Aromatic vs Union Protocol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Scentra Aromatic
Effortlessly manage your home or business scent diffusers from your smartphone. Customize schedules, intensity levels, and set automatic activations for specific times, like opening and closing hours. Secure your device with easy password changes.
- Remote diffuser control
- Customizable schedules
- Adjustable intensity levels
- Automatic activation/deactivation
- Secure password management
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Scentra Aromatic makes diffuser management effortless. Control fragrance settings from your phone. Simple and intuitive for all users, it lets you customize schedules and intensity in just a few taps. Set multiple daily time slots and intensity levels. Automatically activate during opening hours. Turn off after closing. Change passwords easily to keep control secure. Adjust scent strength to suit any moment.
Union Protocol
Enhance your relationship with shared routines, tasks, and rewards. This app fosters connection and playfulness through daily check-ins, goal setting, and private notes, creating a more intentional rhythm for couples.
- Create shared routines and assign tasks
- Track progress and collect points
- Unlock custom rewards together
- Daily check-ins and partner updates
- Private notes and mood tracking
- Shared goals and reminders
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UNION is a private app for couples who want to bring more structure, connection, and playfulness into their shared everyday life. Create routines, assign tasks, track progress, collect points, and unlock custom rewards together. UNION helps couples stay connected through daily check-ins, shared goals, reminders, and meaningful little rituals that make the relationship feel more present. With features like shared tracking, partner updates, private notes, mood check-ins, rewards, and progress insights, UNION turns ordinary routines into a more engaging couple experience. Designed with privacy and discretion in mind, UNION gives couples a dedicated space for their personal connection. Your moments, messages, and shared progress stay between you and your partner. UNION makes it easy to build habits, celebrate small wins, stay emotionally aligned, and create a more intentional rhythm together. Union can be explored for free, with Tasks, Rituals, and Punishments available without a Premium subscription. Access to additional features requires Union Elite. Elite is available as a weekly, a monthly, or a yearly subscription. The yearly subscription includes a 2-week free trial, allowing users to explore the Premium features before being charged. Subscriptions will automatically renew unless cancelled within 24-hours before the end of the current period. You can cancel anytime with your iTunes account settings. Any unused portion of a free trial will be forfeited if you purchase a subscription. - Terms Of Use (EULA):https://www.union-relationship.app/terms - Privacy Policy: https://www.union-relationship.app/privacy - Support: https://www.union-relationship.app/contact
Screenshots
Verdict
The clearest difference is monetization model: Scentra Aromatic at free against Union Protocol's freemium. Scentra Aromatic also leads on rating (5.0 vs 4.8) and iOS requirement (12.0 vs 15.1). Union Protocol's advantage is ratings volume (6 vs 1). On price, update cadence, 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.
Scentra Aromatic holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Union Protocol has 6 ratings behind it against 1, so its average is the more settled of the two.
Scentra Aromatic ships an update every 5 weeks, Union Protocol every 6 weeks. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.
| Parameter | Scentra Aromatic | Union Protocol |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.8 (6 ratings) |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 5 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 10 MB | 121 MB |
| Age rating | 4+ | 17+ |
| Developer | Scentra Aromatic LLC | Accord Studios Ltd. |
Customer experience
Scentra Aromatic
Union Protocol
In-app purchases
Scentra Aromatic
No in-app purchases
Union Protocol
No in-app purchases
