U vs SecuriKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
U
Control your smart lighting system with this app. Set custom schedules for different zones, turn lights on/off manually, and name your zones for easy management. It's a convenient interface for Universal Lighting Systems' Zone Control transformers.
- Set zone schedules
- Manual zone control
- Name custom zones
- Individual zone timing
- System on/off control
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U-SYNC APP is a Wifi enabled smart device app for Universal Lighting Systems, Inc. Zone Control transformers. The App works as an interface to set schedules for zones on the U-SYNC Zone Control products, as well as manually turning the entire system on/off, or multiple zones on/off. Zones can be named and customized to run on individual times for specific durations of time.
SecuriKey
Transform any phone-based intercom into a smart access system. Generate temporary or one-time entry codes to enhance building security and manage guest access remotely. No hardware upgrades are required.
- Control intercoms remotely
- Create temporary entry codes
- Generate one-time use codes
- No hardware upgrades needed
- Receive entry alerts
- Log entry history
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Control your apartment or condo's intercom from an app on your phone. Best of all, it works on all intercoms that can dial a phone number! No hardware upgrades needed! Giving out your apartment's entry code creates a security vulnerability that puts you, your belongings, and family, at risk. With SecuriKey, you can create entry codes that work only once or up until a certain date. Rest comfortably knowing that your delivery driver, old friends, or maintenance workers will never be able to enter your building again with the entry code you gave them. With the SecuriKey app, you'll be able to create smart dynamic entry codes with just a few taps! It's like having a Digital Doorman! SecuriKey works with your existing intercom system, which means, there are no hardware upgrades, modifications, or installations. And, tenants can use it individually without requiring everyone in their building to sign up. But how? 1. Download the App and Sign up 2. You'll get a brand-new phone number that is associated with your SecuriKey Account 3. Assign the new number to you unit in the intercom, and you're all set up! Now when tenants dial your name on the intercom (eg. unit 103) , it'll call your dedicated SecuriKey number instead of your personal phone number. The digital doorman will then answer the call and ask your guest to input their entry code in the keypad. If the code matches a SmartKey that you've set up in the app, then the digital doorman will buzz them in, send you an alert, and log the entry history! Never worry about static entry codes being shared, never worry about old guests coming back onto the property, and always have the ability to revoke access right from an app on your phone. Plus, there is so much more to SecuriKey! Download today and make your old intercom smart, connected, and secure!
Screenshots
Verdict
The clearest difference is review sentiment: SecuriKey at 100% against U's 50%. SecuriKey also leads on rating (4.2 vs 3.0) and update cadence (every 9 days vs every 2 months). U's advantage is iOS requirement (10.0 vs 16.6). On price, ads, in-app purchases and monetization model 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.
SecuriKey holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: SecuriKey has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of U's written reviews are positive against 100% of SecuriKey's.
U ships an update every 2 months, SecuriKey every 9 days. The most recent releases landed on October 12, 2026 and October 18, 2026 respectively.
| Parameter | U | SecuriKey |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 4.2 (11 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 49 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Universal Lighting System | FRAMEWRK, Incorporated |
Customer experience
U
SecuriKey
In-app purchases
U
No in-app purchases
SecuriKey
No in-app purchases









