# Openlett vs Solis

The clearest difference is update cadence: Solis at weekly against Openlett's every 6 weeks. Openlett's advantage is iOS requirement (15.1 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Openlett sells 3 in-app purchases, starting at $4.99 per 7 days and Solis sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Openlett ships an update every 6 weeks, Solis weekly. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Openlett | Solis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 54 MB | 14 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OPENLETT LIMITED](https://appshunter.io/developer/1895988811) | [Ben Davin](https://appshunter.io/developer/6777220263) |

## What reviewers say

### Openlett

[App page](https://appshunter.io/ios/app/openlett/id6759945055)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Monthly Premium | $14.99 | per month |
| Listing Boost | $4.99 | one-time |


### Solis

[App page](https://appshunter.io/ios/app/solis-sun-hours/id6777219991)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solis Monthly | $2.99 | per month |
| Solis Weekly | $4.99 | per 7 days |
| Solis Annual | $29.99 | per year |
| Solis Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Openlett free?

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

### Is Solis free?

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

### Do Openlett or Solis have ads?

Neither Openlett nor Solis shows ads.

### Which is updated more often, Openlett or Solis?

Openlett ships an update every 6 weeks, and Solis weekly. Most recently, Openlett was updated on October 20, 2026 and Solis on October 17, 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.*