# Binomial Calculator vs DocuMind

The clearest difference is in-app purchases: Binomial Calculator at none against DocuMind's 3. DocuMind's advantage is ads (none vs shown) and update cadence (every 10 days vs every 10 months). On price and iOS requirement there is nothing between them.

Both are free to download. DocuMind sells 3 in-app purchases, starting at $2.99 per month. Binomial Calculator asks for nothing beyond the download.

Binomial Calculator ships an update every 10 months, DocuMind every 10 days. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Binomial Calculator | DocuMind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/documind-offline-pdf-ai-chat/id6760796072/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 10 days** |
| Monetization | — | Freemium |
| Size | 5 MB | 47 MB |
| Requires iOS | 18.5 | **18.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 9+ |
| Developer | [Kevin Tang](https://appshunter.io/developer/1780758221) | [Core Arc Studio LLC](https://appshunter.io/developer/1860672306) |

## What reviewers say

### Binomial Calculator

[App page](https://appshunter.io/ios/app/binomial-calculator/id6756537681)

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

**In-app purchases:** none


### DocuMind

[App page](https://appshunter.io/ios/app/documind-offline-pdf-ai-chat/id6760796072)

Instantly get answers from your documents without an internet connection. This app allows you to import various file types, ask questions, and receive accurate, cited responses directly on your device for complete privacy.

**Highlights:** Offline AI-powered document summarization, Import PDFs, text, CSV, JSON, and images, Built-in scanner for paper documents, Vision Analysis for charts and tables, Cited answers for verification, Workspaces for organizing documents, 100% on-device privacy

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DocuMind Pro Monthly | $2.99 | per month |
| DocuMind Pro Annual | $19.99 | per year |
| DocuMind Pro | $9.99 | one-time |


## Frequently asked questions

### Is Binomial Calculator free?

Binomial Calculator is free to download, with no in-app purchases.

### Is DocuMind free?

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

### Do Binomial Calculator or DocuMind have ads?

Binomial Calculator shows ads; DocuMind does not.

### Which is updated more often, Binomial Calculator or DocuMind?

Binomial Calculator ships an update every 10 months, and DocuMind every 10 days. Most recently, Binomial Calculator was updated on October 30, 2026 and DocuMind on November 9, 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.*