Comparison

DeltaSolar vs ESTAR PRO

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

Head to head
About

DeltaSolar

Monitor your solar energy system's performance remotely or onsite. Track energy production, consumption, and export, with historical data for analysis. View grid and solar power voltage, frequency, and amps for comprehensive system insights.

Highlights
  • Remote Wi-Fi access
  • Direct onsite connection
  • Energy status and analysis
  • Production, consumption, export data
  • Historical performance data
  • Grid and solar voltage/frequency monitoring
Features
Read full description

Connect the Delta equipment to the sites Wi-Fi connection for remote access anywhere or connect directly to the inverter onsite using your smart device eliminating the need to have a Wi-Fi internet service. •Full “At a Glance” energy status and analysis •Display of production, consumption, energy bought and energy exported* •Historic data available by day, month or year for comparisons of performance •View grid voltage and frequency as well as the solar power voltage and amps •Easy commission and connect method *Requires the installation of the CT clamp and cable or external power meter. Delta’s P2P (point to point) feature offers the ability to connect your smart device directly to your inverter or battery and receive rapid data update to see your loads and generation as it happens. A new web portal version of the app is also available using your app login details at https://mydeltasolar.deltaww.com.

About

ESTAR PRO

Features
Read full description

ESTAR PRO is a mobile application developed by for installers of distributed PV power plants. It provides an EASY-TO-USE procedure for monitoring accounts and a visual physical layout guide for the installation of microinverters, which helps installers configure monitoring accounts rapidly, and provides installers power generation data on both plant-level & module-level as well as detailed alarm information about the power plant for commissioning & diagnostics.

Screenshots

DeltaSolar4 screens
ESTAR PRO4 screens

Verdict

The call

The clearest difference is iOS requirement: DeltaSolar at 11.0 against ESTAR PRO's 14.0. 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

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

DeltaSolar ships an update every 2 months, ESTAR PRO every 6 weeks. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

Scorecard1 real difference · 7 level
DeltaSolar versus ESTAR PRO: the parameters behind the verdict, then further details
ParameterDeltaSolarESTAR PRO
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better14.0
Further details — not scored
Size136 MB51 MB
Age rating4+4+
DeveloperDelta Electronics, Inc.JUAN WANG

In-app purchases

None

DeltaSolar

No in-app purchases

None

ESTAR PRO

No in-app purchases

Questions

Is DeltaSolar free?
DeltaSolar is free to download, with no in-app purchases.
Is ESTAR PRO free?
ESTAR PRO is free to download, with no in-app purchases.
Do DeltaSolar or ESTAR PRO have ads?
Neither DeltaSolar nor ESTAR PRO shows ads.
Which is updated more often, DeltaSolar or ESTAR PRO?
DeltaSolar ships an update every 2 months, and ESTAR PRO every 6 weeks. Most recently, DeltaSolar was updated on October 15, 2026 and ESTAR PRO on October 19, 2026.

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