Serb vs BluSi
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Serb
Read full descriptionHide full description
Serb is a cutting-edge unmanned traffic management (UTM) solution designed to optimize the safe and efficient integration of unmanned aerial vehicles (UAVs) into the airspace which is Civil Aviation Authority (CAA) authorized app designed specifically for Oman. With robust features like real-time traffic monitoring, route optimization, airspace compliance checks, and weather tracking, our app ensures your UAV operations are safe, smooth, and fully compliant with regulations. Whether you're a UAV operator, air traffic controller, or logistics provider, Serb offers an intuitive platform for seamless management of airspace and drone traffic.
BluSi
Read full descriptionHide full description
BluSi opens all your doors with your phone. Front door, garage, cellar, shared room or shop: you open, you give access and you choose who can come in, with no keys and no spares to cut. OPEN - Tap Open at the door, or let it open as you arrive if you wish. The button sits at the bottom of the screen, near the menu. - Favorites: your favourite BluSi Box first, in the order you choose, with directions to each one. - Hold to open: for a garage or a shutter, the door stays open as long as you press. - Even without a network, when your access allows it. - In "My preferences", set automatic opening, opening time and video calls for each door. "Calibrate" fits the automatic opening distance to your phone, with readings taken on the spot. GIVE ACCESS - Add one or more people at once, by QR code or by e-mail. An invitation sent to an address is reserved for that address. - Create a code in advance for a tradesperson or a delivery, with a start and an end. One code can open several doors, and the BluSi Pad shows each door it opens. Each code shows the location and address of the door, and the site entries show when it is used. - Remove an access whenever you want. A lost phone is removed from the app. VIDEO INTERCOM A visitor calls you from the door or from the BluSi Pad, and the call shows the name of the BluSi Pad. You see the visitor and open during the call. The call rings on the chosen phones and the first to answer handles it. With "Reach me", choose your contact hours for each space, or take a break. SELF-SERVICE In a self-service space, take a free access in the app. It is yours with your own code until you release it. FOR BUILDINGS AND PROPERTY MANAGERS Your accesses are organised by site, location, space and BluSi Box, and the map shows each location with its address. Each space has its seats, one per person. Site administrators set up the spaces, the seats, the BluSi Box, the intercom and the BluSi Pad, and every BluSi Box has its own "Settings" page. Entrances, garages, cellars and shared rooms are managed from one account, and the online dashboard lets you prepare everything from a computer. SECURE AND SWISS Data hosted in Switzerland. No lost keyring to replace. A BluSi Box installed on the door is required. More at blusi.ch. Questions? support@blusi.ch
Screenshots
Verdict
Serb and BluSi are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Serb ships an update every 3 weeks, BluSi every 2 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.
| Parameter | Serb | BluSi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details โ not scored | ||
| Size | 87 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | serb | BluSi |
In-app purchases
Serb
No in-app purchases
BluSi
No in-app purchases









