# Forma vs Sol

The clearest difference is iOS requirement: Forma at 18.6 against Sol's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Forma sells 2 in-app purchases, starting at $2.99 per month and Sol sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Forma ships an update every 2 months, Sol monthly. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Forma | Sol |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 169 MB | 17 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | +4 |
| Developer | [Sabina Babayeva](https://appshunter.io/developer/1782749297) | [Adam Kovacs](https://appshunter.io/developer/1814096456) |

## What reviewers say

### Forma

[App page](https://appshunter.io/ios/app/forma-discipline-tracker/id6770200491)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Forma Plus | $2.99 | per month |
| Forma Plus | $14.99 | per year |


### Sol

[App page](https://appshunter.io/ios/app/sol-daily-notes-and-documents/id6792342079)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sol Pro Monthly | $4.99 | per month |
| Sol Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is Forma free?

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

### Is Sol free?

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

### Do Forma or Sol have ads?

Neither Forma nor Sol shows ads.

### Which is updated more often, Forma or Sol?

Forma ships an update every 2 months, and Sol monthly. Most recently, Forma was updated on September 29, 2026 and Sol on October 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.*