# Calculate Standard Deviation vs Statistics Solver

The clearest difference is ads: Statistics Solver at none against Calculate Standard Deviation's shown. Statistics Solver also leads on update cadence (fortnightly vs every 7 months) and review sentiment (67% vs 50%). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Calculate Standard Deviation sells 1 one-off in-app purchase and Statistics Solver sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Calculate Standard Deviation against 4.6 for Statistics Solver. That said, the two scores are not equally well evidenced: Statistics Solver has 407 ratings behind it against 62, so its average is the more settled of the two. Written reviews are what separate them: 50% of Calculate Standard Deviation's written reviews are positive against 67% of Statistics Solver's.

Calculate Standard Deviation ships an update every 7 months, Statistics Solver fortnightly. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Calculate Standard Deviation | Statistics Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (62 ratings)](https://appshunter.io/ios/app/calculate-standard-deviation/id1591420646/reviews) | **[4.6 (407 ratings)](https://appshunter.io/ios/app/statistics-solver/id6499282494/reviews)** |
| Number of ratings | 62 | **407** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 39 MB | 16 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Asad Ahsan](https://appshunter.io/developer/1326954499) | [Renaissance Apps LLC](https://appshunter.io/developer/1220536592) |

## What reviewers say

### Calculate Standard Deviation

[App page](https://appshunter.io/ios/app/calculate-standard-deviation/id1591420646)

This app calculates standard deviation, variance, and other statistical measures for a given set of values. It simplifies complex statistical formulas with a user-friendly interface and accurate results.

**Highlights:** Calculate Standard Deviation, Calculate Variance, Calculate Mean, Calculate Coefficient of Variance, Calculate Standard Error of Mean, User-friendly interface, Accurate statistical results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Deviation Premium | $4.99 | one-time |


### Statistics Solver

[App page](https://appshunter.io/ios/app/statistics-solver/id6499282494)

This app uses AI to solve statistics problems from photos or uploads. It provides step-by-step explanations for a wide range of statistical topics, from high school to doctoral levels. Users can easily share solutions and explore features with a free trial.

**Highlights:** Instant problem recognition from photos, Detailed step-by-step solutions, Covers all statistics topics, Free trial available, Easy solution sharing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Statistics Answers: Weekly Sub | $5.99 | per 7 days |
| Statistics Answers: Yearly Sub | $34.99 | per year |

**What reviewers like**

- 👍 Highly accurate for statistics
- 👍 Exceeds other apps in accuracy
- 👍 Useful for passing statistics
- 👍 Helps with complex questions
- 👍 Gets the job done

**What reviewers complain about**

- 🐛 Stops working after a few weeks
- 🐛 Stuck on loading screen
- 🐛 Shows wrong answers
- 🐛 Inaccurate for binomial/normal probability
- 🐛 Paid version doesn't solve simple questions

**Reported bugs**

- Gets to 100% then does nothing
- Loading screen never continues
- App stops working after a few weeks
- Stuck on the same problem after taking a picture
- Shows only wrong answers

**Requested features**

- Add a home button
- Add other tweaks
- How to cancel membership


## Frequently asked questions

### Is Calculate Standard Deviation free?

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

### Is Statistics Solver free?

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

### Which has better reviews, Calculate Standard Deviation or Statistics Solver?

Statistics Solver is rated higher. Calculate Standard Deviation averages 4.5 out of 5 from 62 ratings, while Statistics Solver averages 4.6 from 407 ratings.

### Do Calculate Standard Deviation or Statistics Solver have ads?

Calculate Standard Deviation shows ads; Statistics Solver does not.

### Which is updated more often, Calculate Standard Deviation or Statistics Solver?

Calculate Standard Deviation ships an update every 7 months, and Statistics Solver fortnightly. Most recently, Calculate Standard Deviation was updated on October 3, 2026 and Statistics Solver on October 2, 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.*