# tSolar app vs PV Calculator.

The clearest difference is in-app purchases: tSolar app at none against PV Calculator.'s 1. tSolar app also leads on iOS requirement (9.0 vs 13.0). PV Calculator.'s advantage is update cadence (every 7 months vs every 21 months). On price, ads and device support there is nothing between them.

Both are free to download. PV Calculator. sells 1 one-off in-app purchase. tSolar app asks for nothing beyond the download.

tSolar app ships an update every 21 months, PV Calculator. every 7 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | tSolar app | PV Calculator. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pv-calculator/id6758427564/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 7 months** |
| Monetization | — | Free with in-app purchases |
| Size | 47 MB | 52 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Toscano Linea Electronica SL](https://appshunter.io/developer/1170172273) | [Nanjibhai Gorasiya](https://appshunter.io/developer/1834066312) |

## What reviewers say

### tSolar app

[App page](https://appshunter.io/ios/app/tsolar-app/id1464794767)

**Features:** macOS Compatibility

**In-app purchases:** none


### PV Calculator.

[App page](https://appshunter.io/ios/app/pv-calculator/id6758427564)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $9.99 | one-time |


## Frequently asked questions

### Is tSolar app free?

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

### Is PV Calculator. free?

PV Calculator. is free to download, with in-app purchases available.

### Do tSolar app or PV Calculator. have ads?

Neither tSolar app nor PV Calculator. shows ads.

### Which is updated more often, tSolar app or PV Calculator.?

tSolar app ships an update every 21 months, and PV Calculator. every 7 months. Most recently, tSolar app was updated on October 16, 2026 and PV Calculator. on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*