Comparison

Call2U vs Xenterra Solar

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

Head to head

About

Call2U

Forward calls from an Ipervoice system to your mobile device. Answer calls, control door or car entrance access, and temporarily mute your microphone.

Highlights

Call forwarding
Answer calls remotely
Door/entrance access control
Temporary microphone mute
Ipervoice system integration

Features

Read full description

App to forward the call from Ipervoice system to a mobile device. It gets possible to answer, to open the door or the car entrance and to close the mobile microphone for a while.

About

Xenterra Solar

Features

Read full description

Xenterra application is only applicable to solar Energy Storage products running on HDL Solar HEMS cloud, which can provide smart energy analysis and O&M services for solar & energy storage plants including Plant Creation & Access, Remote Configuration, WLAN Configuration, Plant Data Collection, Power Generation Trend Monitoring, Faults Management & Alert Messages and Device Status Monitoring.

Screenshots

Call2U1 screens

Xenterra Solar4 screens

Verdict

The call

The clearest difference is update cadence: Xenterra Solar at monthly against Call2U's every 6 months. Call2U's advantage is iOS requirement (9.0 vs 13.0). 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

Call2U ships an update every 6 months, Xenterra Solar monthly. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 6 level

Call2U versus Xenterra Solar: the parameters behind the verdict, then further details
Parameter	Call2U	Xenterra Solar
Price	Free	Free
Positive reviews	0.0% of reviews	—
Update frequency	Every 6 months	Monthly — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	9.0 — better	13.0
Further details — not scored
Size	18 MB	57 MB
Age rating	4+	9+
Developer	URMET SpA	HDL Automation Co., Ltd

In-app purchases

None

Call2U

No in-app purchases

None

Xenterra Solar

No in-app purchases

Questions

Is Call2U free?

Call2U is free to download, with no in-app purchases.

Is Xenterra Solar free?

Xenterra Solar is free to download, with no in-app purchases.

Do Call2U or Xenterra Solar have ads?

Neither Call2U nor Xenterra Solar shows ads.

Which is updated more often, Call2U or Xenterra Solar?

Call2U ships an update every 6 months, and Xenterra Solar monthly. Most recently, Call2U was updated on October 21, 2026 and Xenterra Solar on October 25, 2026.