# Statistics Calculator vs CEI Reader

The clearest difference is price: Statistics Calculator at Free against CEI Reader's $9.99. CEI Reader's advantage is in-app purchases (none vs 2) and update cadence (every 3 days vs every 21 months). On ads, device support and iOS requirement there is nothing between them.

Statistics Calculator is free to download; CEI Reader costs $9.99 up front. Statistics Calculator sells 2 one-off in-app purchases. CEI Reader asks for nothing beyond the download.

Statistics Calculator ships an update every 21 months, CEI Reader every 3 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Statistics Calculator | CEI Reader |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.4 (317 ratings)](https://appshunter.io/ios/app/statistics-calculator/id1185124478/reviews)** | — |
| Number of ratings | **317** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 41 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dogahe](https://appshunter.io/developer/468657946) | [GEORGE-ALEXANDRU BERESCU](https://appshunter.io/developer/1730707479) |

## What reviewers say

### Statistics Calculator

[App page](https://appshunter.io/ios/app/statistics-calculator/id1185124478)

This app provides essential statistical calculations and regression analysis with an intuitive interface. Easily input data, view statistical measures, and perform various regression models. Advanced features are unlocked via in-app purchases.

**Highlights:** List data entry and management, Basic statistical measures (mean, std dev, etc.), Linear, logarithmic, exponential, power regression, Regression model graphing, Probability distributions, Confidence intervals, Hypothesis tests

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access - All Features | $2.99 | one-time |
| Statistics Calculator++ | $2.99 | one-time |


### CEI Reader

[App page](https://appshunter.io/ios/app/cei-reader-domiciliu/id6812494914)

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

**In-app purchases:** none


## Frequently asked questions

### Is Statistics Calculator free?

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

### Is CEI Reader free?

CEI Reader costs $9.99, with no in-app purchases.

### Do Statistics Calculator or CEI Reader have ads?

Neither Statistics Calculator nor CEI Reader shows ads.

### Which is updated more often, Statistics Calculator or CEI Reader?

Statistics Calculator ships an update every 21 months, and CEI Reader every 3 days. Most recently, Statistics Calculator was updated on November 2, 2026 and CEI Reader on October 31, 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.*