Comparison

Dr. Tracker vs PV Calculator Lite Version

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

Head to head
About

Dr. Tracker

Features
Read full description

1. Data mining and visual monitoring are performed hierarchically from top to bottom in accordance with power stations, collection stations, partitions, sub-arrays, and single trackers, so as to obtain accurate field station and single-row bracket angle data in real time. 2. It has two modes of automatic control and manual control, and completes the control and protection of large-scale stations with one key. 3. It can quickly push fault signals and accurately locate the alarm equipment. And it supports to view the cause of the alarm and repair suggestions. 4. Through Lingyang's intelligent optimization control box, the operation status of each tracking bracket motor is collected in real time, and the fault warning information of the power station is quickly formed into an operation and maintenance work order, and at the same time, it is pushed to the mobile terminal.

About

PV Calculator Lite Version

Estimate the potential of solar energy generation at your location. This tool offers detailed calculations for electricity fed into the grid, purchased electricity, annual savings, and payback time. It features site-specific solar irradiance and hourly resolution for accurate production and storage planning.

Highlights
  • Calculate electricity fed into grid and purchased
  • Estimate annual savings and payback time
  • Site-specific solar irradiance data
  • Hourly resolution for production and storage
  • Define PV modules, inverters, and load profiles
  • Automatic optimal orientation determination
  • Roof area measurement and panel positioning
Features
Read full description

It is important to present the potential of renewable energy generation in a simple and clear way for everyone. Get an idea of the potential of photovoltaic power generation at your site. languages: english, german What makes this app stand out from others * Typical meteorological year (TMY) as radiation data at your site * Hourly resolution allows an accurate view of production and battery storage throughout the day * Individual load profiles allow a design adapted to your consumer behavior * Roof area measurement and panel positioning allow realistic planning PV Calculator Lite Features - Calculate the amount of electricity fed into the grid and purchased - Calculate your annual savings and payback time - Site specific solar irradiance - Hourly resolution - Define your PV-Modules and power inverter - Automatic determination of optimal orientation - Define your energy demand and daily load profile - Sizing of your battery storage - Roof area measurement and panel positioning This app is Ad-free. Premium Version Features - Historical radiation data from 2005-2021 - Create multiple projects - Import/ export projects or share with friends - Consider Snowfall - Consider shading - Create your own individual load profile - Create an unlimited number of PV arrays - Export your results as Excel sheet

Screenshots

Dr. Tracker4 screens
PV Calculator Lite Version4 screens

Verdict

The call

The clearest difference is iOS requirement: Dr. Tracker at 9.0 against PV Calculator Lite Version'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

Dr. Tracker ships an update weekly, PV Calculator Lite Version every 10 days. Both last shipped on November 3, 2026.

Scorecard1 real difference · 9 level
Dr. Tracker versus PV Calculator Lite Version: the parameters behind the verdict, then further details
ParameterDr. TrackerPV Calculator Lite Version
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyWeekly — betterEvery 10 days
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.0 — better13.4
Further details — not scored
Size30 MB38 MB
Age rating4+4+
DeveloperLingyang Technology (Hangzhou) Co., Ltd.Sven Schwertner

In-app purchases

None

Dr. Tracker

No in-app purchases

None

PV Calculator Lite Version

No in-app purchases

Questions

Is Dr. Tracker free?
Dr. Tracker is free to download, with no in-app purchases.
Is PV Calculator Lite Version free?
PV Calculator Lite Version is free to download, with no in-app purchases.
Do Dr. Tracker or PV Calculator Lite Version have ads?
Neither Dr. Tracker nor PV Calculator Lite Version shows ads.
Which is updated more often, Dr. Tracker or PV Calculator Lite Version?
Dr. Tracker ships an update weekly, and PV Calculator Lite Version every 10 days. Most recently, Dr. Tracker was updated on November 3, 2026 and PV Calculator Lite Version on November 3, 2026.

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