# Solvera vs Sigma

The clearest difference is update cadence: Solvera at every 5 days against Sigma's every 2 months. Solvera also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Solvera sells 3 in-app purchases, starting at $2.99 per 7 days and Sigma sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Solvera ships an update every 5 days, Sigma every 2 months. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Solvera | Sigma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 15 MB | 81 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EBUZER SIMSEK](https://appshunter.io/developer/1708825740) | [Yorgi Del Rio](https://appshunter.io/developer/1845433622) |

## What reviewers say

### Solvera

[App page](https://appshunter.io/ios/app/solvera-the-math-solver-app/id6754225581)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly With Discount | $2.99 | per 7 days |
| Premium Weekly | $6.99 | per 7 days |
| Premium Annual | $29.99 | per year |


### Sigma

[App page](https://appshunter.io/ios/app/sigma-statistics-calculator/id6759198563)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is Solvera free?

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

### Is Sigma free?

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

### Do Solvera or Sigma have ads?

Neither Solvera nor Sigma shows ads.

### Which is updated more often, Solvera or Sigma?

Solvera ships an update every 5 days, and Sigma every 2 months. Most recently, Solvera was updated on September 14, 2026 and Sigma on September 18, 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.*