# Smartbell vs Solar

The clearest difference is iOS requirement: Solar at 11.0 against Smartbell's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Smartbell ships an update every 6 weeks, Solar every 3 weeks. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Smartbell | Solar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 66 MB | 53 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Codext GmbH](https://appshunter.io/developer/1488755999) | [Lukas Klein](https://appshunter.io/developer/1716534841) |

## What reviewers say

### Smartbell

[App page](https://appshunter.io/ios/app/smartbell/id1521007837)

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

**In-app purchases:** none


### Solar

[App page](https://appshunter.io/ios/app/solar-rechner/id6446852474)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smartbell free?

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

### Is Solar free?

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

### Do Smartbell or Solar have ads?

Neither Smartbell nor Solar shows ads.

### Which is updated more often, Smartbell or Solar?

Smartbell ships an update every 6 weeks, and Solar every 3 weeks. Most recently, Smartbell was updated on October 27, 2026 and Solar on November 3, 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.*