Comparison

Smart Screens vs eCall C

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Smart Screens

Features
Read full description

Note: The Smart Screens app is a companion app for the BAB TECHNOLOGIE APP MODULE from Firmwareversion 1.6.2 Control IoT, KNX and EnOcean devices in just one app? No problem with the APPMODULE and the brand new »Smart Screens«. Whether Philips® hue, Panasonic®, Sonos, Nuki or DoorBird: Many of the Smart Home Apps available from the BAB APP MARKET can now be controlled directly with your smartphone. Download »Smart Screens« and connect your smartphone to the APP MODULE. Create your first smart screen in just a few minutes and combine functions of different products - easily, individually. This way you control different IoT and KNX components in one interface. Please also check in the App Manager whether your installed apps are up to date.

About

eCall C

Features
Read full description

OTIS eCall C can call elevator via Bluetooth. The elevator would be summoned when you trigger "up & down" button in app, and then you can register the destination floor when you get into the cabin via app. Before calling elevator, you need to add OTIS elevator in the APP in advance, and enable your mobile Bluetooth. KEY FEATURES: -Summon elevator and select destination floor -Add multiple buildings and change whenever you need.

Screenshots

Smart Screens4 screens
eCall C4 screens

Verdict

The call

The clearest difference is update cadence: Smart Screens at weekly against eCall C's every 3 months. On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Smart Screens ships an update weekly, eCall C every 3 months. The most recent releases landed on October 5, 2026 and October 27, 2026 respectively.

Scorecard1 real difference · 5 level
Smart Screens versus eCall C: the parameters behind the verdict, then further details
ParameterSmart ScreenseCall C
PriceFreeFree
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.2 — better12.0
Further details — not scored
Size38 MB34 MB
Age rating4+17+
DeveloperBAB TECHNOLOGIE GmbHOtis High Rise Elevator (Shanghai) Co.,Ltd.

In-app purchases

None

Smart Screens

No in-app purchases

None

eCall C

No in-app purchases

Questions

Is Smart Screens free?
Smart Screens is free to download, with no in-app purchases.
Is eCall C free?
eCall C is free to download, with no in-app purchases.
Do Smart Screens or eCall C have ads?
Neither Smart Screens nor eCall C shows ads.
Which is updated more often, Smart Screens or eCall C?
Smart Screens ships an update weekly, and eCall C every 3 months. Most recently, Smart Screens was updated on October 5, 2026 and eCall C on October 27, 2026.

Other comparisons