# inSun App vs Heiwit Solar

inSun App and Heiwit Solar are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

inSun App ships an update every 5 weeks, Heiwit Solar every 6 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | inSun App | Heiwit Solar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Size | 244 MB | 58 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Engorithm SA](https://appshunter.io/developer/1656684270) | [HEIWIT S.P.A.](https://appshunter.io/developer/1842332740) |

## What reviewers say

### inSun App

[App page](https://appshunter.io/ios/app/insun-app/id6444766490)

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

**In-app purchases:** none


### Heiwit Solar

[App page](https://appshunter.io/ios/app/heiwit-solar/id6753071652)

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

**In-app purchases:** none


## Frequently asked questions

### Is inSun App free?

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

### Is Heiwit Solar free?

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

### Do inSun App or Heiwit Solar have ads?

Neither inSun App nor Heiwit Solar shows ads.

### Which is updated more often, inSun App or Heiwit Solar?

inSun App ships an update every 5 weeks, and Heiwit Solar every 6 weeks. Most recently, inSun App was updated on October 25, 2026 and Heiwit Solar on October 28, 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.*