# Standard Deviation Calc vs Formula Rastreamento

The clearest difference is in-app purchases: Formula Rastreamento at none against Standard Deviation Calc's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Standard Deviation Calc sells 1 one-off in-app purchase. Formula Rastreamento asks for nothing beyond the download.

Standard Deviation Calc ships an update every 5 months, Formula Rastreamento every 3 months. The most recent releases landed on October 8, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | Standard Deviation Calc | Formula Rastreamento |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (11 ratings)](https://appshunter.io/ios/app/standard-deviation-calc-sd/id1497525733/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 37 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [RENATO DA SILVA DE LIMA](https://appshunter.io/developer/1451830635) |

## What reviewers say

### Standard Deviation Calc

[App page](https://appshunter.io/ios/app/standard-deviation-calc-sd/id1497525733)

Calculate standard deviation for sample or population data. Input numerical values to find standard deviation, count, sum, mean, variance, and more. Get quick statistical insights with this easy-to-use tool.

**Highlights:** Calculate standard deviation, Sample or population data, Compute mean and variance, Count numerical values, Sum of numbers, List of differences

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### Formula Rastreamento

[App page](https://appshunter.io/ios/app/formula-rastreamento/id6754087042)

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

**In-app purchases:** none


## Frequently asked questions

### Is Standard Deviation Calc free?

Standard Deviation Calc is free to download, with in-app purchases available.

### Is Formula Rastreamento free?

Formula Rastreamento is free to download, with no in-app purchases.

### Do Standard Deviation Calc or Formula Rastreamento have ads?

Neither Standard Deviation Calc nor Formula Rastreamento shows ads.

### Which is updated more often, Standard Deviation Calc or Formula Rastreamento?

Standard Deviation Calc ships an update every 5 months, and Formula Rastreamento every 3 months. Most recently, Standard Deviation Calc was updated on October 8, 2026 and Formula Rastreamento on August 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.*