Comparison

SolarViewer vs Watt Advisor

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

Head to head
About

SolarViewer

Features
Read full description

PV interverter monitoring APP to monitor PV plant and PV inverter meter/parameters, provide local/remote setting.

About

Watt Advisor

This app analyzes your energy usage to provide personalized advice on solar installation, energy plans, and home efficiency. It also monitors grid conditions and sends alerts for potential reliability issues. Optimize your energy consumption and save money with smart recommendations.

Highlights
  • Energy usage analysis
  • Solar calculator
  • Grid reliability alerts
  • Energy contract analysis
  • Home energy efficiency assessment
  • Smart device optimization
Features
Read full description

Watt Advisor is here to guide you through the energy transition. The way we produce and consume energy is changing, and this presents new choices for consumers. Should I install rooftop solar? Do I have the best energy plan? Is my home energy efficient? Watt Advisor connects to your usage data and helps answer all these questions. Worried if the grid will have enough capacity during the next heat wave or winter storm? We monitor current and future grid conditions (supply and demand) and send you push alerts as soon as we see any issues with grid reliability. Enter your current energy contract information and we estimate your bill, inform you if you are paying too much for your energy, and send push alerts to remind you when its time to renew your contract. Our solar calculator will tell you the optimal solar system size based on your usage (and if solar even makes sense for you) so you can maximize the economic value of going green through rooftop solar. Watt Advisor algorithms analyze your usage, and additional information about your home to calculate how efficient your home energy usage is and if you should consider a home energy audit. Our app can also integrate with your smart devices (Thermostats, Electric Vehicles - coming soon) and we optimize their usage based on how much renewable energy is on the grid and reduce usage when grid reliability is threatened. We also provides advice on the best time to run your high power devices such as washers and dryers. Our service is provided for free and we currently serve all customers in competitive areas of ERCOT in Texas (ONCOR, AEP, TNMP, CENTERPOINT) whoever your retail electric provider is. We have a vision of a renewable and reliable power grid and can't wait to help you make decisions that will support that goal. Energy can be cheaper greener and more reliable with Watt Advisor!

Screenshots

SolarViewer2 screens
Watt Advisor4 screens

Verdict

The call

The clearest difference is iOS requirement: SolarViewer at 8.0 against Watt Advisor's 13.4. 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

SolarViewer ships an update every 5 weeks, Watt Advisor every 6 weeks. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

Scorecard1 real difference · 8 level
SolarViewer versus Watt Advisor: the parameters behind the verdict, then further details
ParameterSolarViewerWatt Advisor
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 5 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13.4
Further details — not scored
Size36 MB34 MB
Age rating4+4+
DeveloperAsianPowerDevicesIncBreakSmart LLC

In-app purchases

None

SolarViewer

No in-app purchases

None

Watt Advisor

No in-app purchases

Questions

Is SolarViewer free?
SolarViewer is free to download, with no in-app purchases.
Is Watt Advisor free?
Watt Advisor is free to download, with no in-app purchases.
Do SolarViewer or Watt Advisor have ads?
Neither SolarViewer nor Watt Advisor shows ads.
Which is updated more often, SolarViewer or Watt Advisor?
SolarViewer ships an update every 5 weeks, and Watt Advisor every 6 weeks. Most recently, SolarViewer was updated on October 7, 2026 and Watt Advisor on October 1, 2026.

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