iSolar vs PV Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSolar
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Are you realizing a solar plant but you don't know how to direct your panel? No more problems with iSolar! iSolar allows you to calculate the best orientation for your photovoltaic panels according to the season.
PV Calculator
This tool helps you calculate the necessary components for an off-grid photovoltaic system. It guides you through determining power consumption, available sunlight, and sizing solar arrays and battery banks.
- Battery bank sizing
- Solar panel wattage calculation
- Charge controller sizing
- Power consumption determination
- Sun hours analysis
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The PV Calculator helps you size the battery bank, watts of solar panels and the solar charge controller for your needs. The calculator assumes you will need to size your system to get you through average amount of sun-light for your location. Solar electric system sizing - simple steps: - determine your Power Consumption demands - determine the Sun Hours available per day - size your Array - size your Battery Bank The information and the results provided on this software are not a substitute for professional planning tool! They are for general information purposes only!
Screenshots
Verdict
The clearest difference is ads: PV Calculator at none against iSolar's shown. PV Calculator also leads on device support (3 vs 1) and iOS requirement (12.0 vs 18.0). iSolar's advantage is update cadence (fortnightly vs every 8 months) and price ($0.99 vs $1.99). On 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
iSolar costs $0.99 and PV Calculator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iSolar ships an update fortnightly, PV Calculator every 8 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.
| Parameter | iSolar | PV Calculator |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | — | 4.0 (13 ratings) — better |
| Positive reviews | — | 42.9% of reviews |
| Number of ratings | — | 13 — better |
| Update frequency | Fortnightly — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Alain Lima | Cristinel Bontas |
In-app purchases
iSolar
No in-app purchases
PV Calculator
No in-app purchases
