# PV Calculator Lite Version vs Synora Notes

The clearest difference is in-app purchases: PV Calculator Lite Version at none against Synora Notes's 6. PV Calculator Lite Version also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (13.4 vs 26). On price, ads and device support there is nothing between them.

Both are free to download. Synora Notes sells 6 in-app purchases, starting at $22.99 per month. PV Calculator Lite Version asks for nothing beyond the download.

PV Calculator Lite Version ships an update every 10 days, Synora Notes every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PV Calculator Lite Version | Synora Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pv-calculator-lite-version/id6459019012/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free | — |
| Size | 38 MB | 6 MB |
| Requires iOS | **13.4** | 26 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sven Schwertner](https://appshunter.io/developer/1700478261) | [Tufan Cakir](https://appshunter.io/developer/1776020285) |

## What reviewers say

### PV Calculator Lite Version

[App page](https://appshunter.io/ios/app/pv-calculator-lite-version/id6459019012)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Synora Notes

[App page](https://appshunter.io/ios/app/synora-notes/id6770082322)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synora Pro | $22.99 | per month |
| Synora Ultimate | $29.99 | per month |
| 25 Coins | $4.99 | one-time |
| 50 Coins | $12.99 | one-time |
| 100 Coins | $22.99 | one-time |
| Synora Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is PV Calculator Lite Version free?

PV Calculator Lite Version is free to download, with no in-app purchases.

### Is Synora Notes free?

Synora Notes is free to download, with in-app purchases available.

### Do PV Calculator Lite Version or Synora Notes have ads?

Neither PV Calculator Lite Version nor Synora Notes shows ads.

### Which is updated more often, PV Calculator Lite Version or Synora Notes?

PV Calculator Lite Version ships an update every 10 days, and Synora Notes every 2 months. Most recently, PV Calculator Lite Version was updated on November 3, 2026 and Synora Notes on November 5, 2026.

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