Comparison

PV Calculator. vs Grid Zero

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

Head to head
About

PV Calculator.

This tool simplifies solar photovoltaic system design and analysis for professionals and students. It offers a comprehensive Energy Hub with multiple calculators, providing instant results, visual charts, and clear insights for efficient PV system planning and optimization.

Highlights
  • Energy Hub with multiple solar calculators
  • Calculate solar panel power output
  • Analyze energy generation (daily, monthly, yearly)
  • Design solar array size
  • Calculate system voltage and configuration
  • Instant calculation results
  • Visual charts and performance summaries
Features
Read full description

PV Calculator is a smart and easy-to-use solar photovoltaic calculation tool designed for solar professionals, engineers, students, and renewable energy planners. The app provides a complete Energy Hub with multiple solar calculators that help you design, analyze, and optimize PV systems efficiently. With clear inputs, visual charts, and instant results, PV Calculator simplifies complex solar calculations into an intuitive experience. Key Modules & Features: Access all essential PV calculators from a single dashboard for quick system planning. Calculate solar panel power output and view performance distribution with clear visual insights. Analyze daily, monthly, and yearly energy generation with easy-to-read charts. Design solar array size based on system parameters, efficiency, and environmental factors. Calculate required system voltage and electrical configuration for PV installations. Highlights: - Instant calculation results - Visual charts and performance summaries - Clean, modern, and easy UI - Accurate solar PV system planning - Ideal for rooftop and small-scale solar projects - Useful for education, planning, and field reference PV Calculator helps you make informed decisions when designing and evaluating solar photovoltaic systems—quickly, accurately, and confidently. in-app purchase included 
 Lifetime to Remove Ads Privacy Policy : https://docs.google.com/document/d/1Dn1gNdDP2AHL7sg-px4rxdLAcoGHlNB8/edit#heading=h.1ionsc3v3xmq Terms and Condition : https://docs.google.com/document/d/1t-LREPKByKaM0UkbIo4o0E1gdAYs21Oe30EfGxenEss/edit?usp=sharing

About

Grid Zero

Features
Read full description

GridZero helps EPC teams go from concept to client-ready solar proposals - faster and with precision. Combining 3D layouts, system optimization, financial analysis, and proposal generation into one continuous workflow. Designed for solar EPC professionals. GridZero is evolving to support the full solar project lifecycle. This app is exclusively available to existing GridZero B2B client organizations. Access is provisioned by GridZero for authorized team members.

Screenshots

PV Calculator.4 screens
Grid Zero4 screens

Verdict

The call

The clearest difference is in-app purchases: Grid Zero at none against PV Calculator.'s 1. Grid Zero also leads on update cadence (every 5 days vs every 7 months). PV Calculator.'s advantage is iOS requirement (13.0 vs 15.1). On price, ads 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. PV Calculator. sells 1 one-off in-app purchase. Grid Zero asks for nothing beyond the download.

UpkeepUpdate frequency

PV Calculator. ships an update every 7 months, Grid Zero every 5 days. The most recent releases landed on August 20, 2026 and September 8, 2026 respectively.

Scorecard3 real differences · 6 level
PV Calculator. versus Grid Zero: the parameters behind the verdict, then further details
ParameterPV Calculator.Grid Zero
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 7 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size52 MB55 MB
Age rating4+4+
DeveloperNanjibhai GorasiyaGRIDZERO NEW ENERGY SOLUTIONS PRIVATE LIMITED

In-app purchases

1 purchases

PV Calculator.

One-time1
  • Lifetime premium$9.99
None

Grid Zero

No in-app purchases

Questions

Is PV Calculator. free?
PV Calculator. is free to download, with in-app purchases available.
Is Grid Zero free?
Grid Zero is free to download, with no in-app purchases.
Do PV Calculator. or Grid Zero have ads?
Neither PV Calculator. nor Grid Zero shows ads.
Which is updated more often, PV Calculator. or Grid Zero?
PV Calculator. ships an update every 7 months, and Grid Zero every 5 days. Most recently, PV Calculator. was updated on August 20, 2026 and Grid Zero on September 8, 2026.

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