# Happiness Tracker vs Solis

The clearest difference is update cadence: Solis at every 3 months against Happiness Tracker's every 9 months. Solis also leads on device support (3 vs 1) and iOS requirement (14.0 vs 18.1). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Happiness Tracker sells 1 one-off in-app purchase and Solis sells 9 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Happiness Tracker ships an update every 9 months, Solis every 3 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Happiness Tracker | Solis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Size | 3 MB | 42 MB |
| Requires iOS | 18.1 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Sergi Mateo](https://appshunter.io/developer/586875339) | [ORJOR KASNECI](https://appshunter.io/developer/1886164569) |

## What reviewers say

### Happiness Tracker

[App page](https://appshunter.io/ios/app/happiness-tracker-moodis/id6738681849)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Moodis Plus | $4.99 | one-time |


### Solis

[App page](https://appshunter.io/ios/app/solis-daily-alignment/id6760774098)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solis Base | $6.99 | per 7 days |
| Solis Pro | $9.99 | per 7 days |
| Solis Max | $14.99 | per 7 days |
| Solis Monthly | $19.95 | per month |
| Solis Pro Monthly | $49.99 | per month |
| Solis Max Monthly | $89.99 | per month |
| Solis Base Annual | $196.99 | per year |
| Solis Pro Annual | $369.99 | per year |
| Solis Max Annual | $699.99 | per year |


## Frequently asked questions

### Is Happiness Tracker free?

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

### Is Solis free?

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

### Do Happiness Tracker or Solis have ads?

Neither Happiness Tracker nor Solis shows ads.

### Which is updated more often, Happiness Tracker or Solis?

Happiness Tracker ships an update every 9 months, and Solis every 3 months. Most recently, Happiness Tracker was updated on October 25, 2026 and Solis 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.*