# Solen vs Calla

The clearest difference is ads: Calla at none against Solen's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Solen sells 2 in-app purchases, starting at $9.99 per month and Calla sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Solen | Calla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solen-perimenopause-tracker/id6798623584/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 69 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Troiva LLC](https://appshunter.io/developer/1896537878) | [Arman Malkhasyan](https://appshunter.io/developer/6804423803) |

## What reviewers say

### Solen

[App page](https://appshunter.io/ios/app/solen-perimenopause-tracker/id6798623584)

Track perimenopause symptoms like hot flashes and anxiety daily. Identify personal triggers and test interventions to see what genuinely helps you feel better. Generate reports for your doctor with your logged data.

**Highlights:** Log 13 symptoms in seconds, Map personal symptom triggers, Test interventions over 14 days, Generate doctor reports, Ask questions based on your log, Widget and Lock Screen logging

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solen Pro Monthly | $9.99 | per month |
| Solen Pro Annual | $39.99 | per year |


### Calla

[App page](https://appshunter.io/ios/app/calla-perimenopause-tracker/id6804423801)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calla Pro - Monthly | $7.99 | per month |
| Calla Pro - Yearly | $39.99 | per year |


## Frequently asked questions

### Is Solen free?

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

### Is Calla free?

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

### Do Solen or Calla have ads?

Solen shows ads; Calla does not.

### Which is updated more often, Solen or Calla?

Solen ships an update every 4 days, and Calla every 4 days. Most recently, Solen was updated on October 25, 2026 and Calla on October 25, 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.*