Comparison

Spark vs SolarViewer

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

Head to head

Workforce Management

About

Spark

Features

Read full description

Introducing SPARK, the intelligent energy management system reshaping industries worldwide. By harnessing analytics, machine learning, and human expertise, SPARK becomes your trusted ally in unlocking unmatched energy productivity. With Reon's Digital Solutions driving it, SPARK ensures a blend of favorable Levelized Cost of Energy (LCOE) and continual asset performance management, guaranteeing peak annual energy production for your assets. But SPARK goes beyond mere productivity enhancement; it's about refining maintenance strategies and slashing on-ground costs. Offering predictive maintenance assistance, SPARK keeps your plant steps ahead of potential issues. Its smart features streamline maintenance processes, conserving time, resources, and funds over the long haul. Whether you're overseeing a bustling industrial operation or managing intricate energy infrastructures, SPARK stands as your comprehensive solution for elevating efficiency and profitability. Embrace the transformative prowess of SPARK today and align with the vanguard of industry innovation!

About

SolarViewer

Features

Read full description

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

Screenshots

Spark3 screens

SolarViewer2 screens

Verdict

The call

The clearest difference is update cadence: SolarViewer at every 5 weeks against Spark's every 5 months. SolarViewer also leads on iOS requirement (8.0 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

Spark ships an update every 5 months, SolarViewer every 5 weeks. The most recent releases landed on November 2, 2026 and October 26, 2026 respectively.

Scorecard2 real differences · 4 level

Spark versus SolarViewer: the parameters behind the verdict, then further details
Parameter	Spark	SolarViewer
Price	Free	Free
Update frequency	Every 5 months	Every 5 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	13.0	8.0 — better
Further details — not scored
Size	31 MB	36 MB
Age rating	4+	4+
Developer	Reon Energy	AsianPowerDevicesInc

In-app purchases

None

Spark

No in-app purchases

None

SolarViewer

No in-app purchases

Questions

Is Spark free?

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

Is SolarViewer free?

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

Do Spark or SolarViewer have ads?

Neither Spark nor SolarViewer shows ads.

Which is updated more often, Spark or SolarViewer?

Spark ships an update every 5 months, and SolarViewer every 5 weeks. Most recently, Spark was updated on November 2, 2026 and SolarViewer on October 26, 2026.