# Private Contacts vs Mathify

The clearest difference is in-app purchases: Private Contacts at none against Mathify's 3. Private Contacts also leads on review sentiment (100% vs 71%) and rating (5.0 vs 4.6). Mathify's advantage is update cadence (every 4 days vs every 2 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Mathify sells 3 in-app purchases, starting at $0.99 per month. Private Contacts asks for nothing beyond the download.

Private Contacts holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 100% of Private Contacts's written reviews are positive against 71% of Mathify's.

Private Contacts ships an update every 2 weeks, Mathify every 4 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Private Contacts | Mathify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/private-contacts-secure-vault/id1522879771/reviews)** | [4.6 (7 ratings)](https://appshunter.io/ios/app/mathify-math-editor/id1549563845/reviews) |
| Number of ratings | 3 | **7** |
| Positive reviews | **100.0% of reviews** | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 76 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LogiSian Technology Solutions](https://appshunter.io/developer/591577055) | [Hakob Grigoryan](https://appshunter.io/developer/1549564147) |

## What reviewers say

### Private Contacts

[App page](https://appshunter.io/ios/app/private-contacts-secure-vault/id1522879771)

Securely store and manage contacts separately from your main address book. Keep sensitive numbers hidden and protected with strong lock features. Initiate calls and chats on messaging apps without saving numbers to your phone.

**Highlights:** Private contact locker, Strong lock protection (PIN, pattern, password), Import contacts from phonebook, Direct WhatsApp/Telegram chat without saving, Private caller and dialer, Prevent app access to contacts

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

**In-app purchases:** none


### Mathify

[App page](https://appshunter.io/ios/app/mathify-math-editor/id1549563845)

This app allows users to create and solve complex math equations using AI. It supports various input methods, including handwriting recognition and image capture, and can export documents to multiple formats. Get step-by-step solutions and calculate results with external tools.

**Highlights:** AI-powered equation editor, Handwriting recognition, Image-based formula capture (OCR), Step-by-step solutions, Export to PDF and DOCX, WolframAlpha integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard | $0.99 | per month |
| Gold | $1.99 | per month |
| Platinum | $5.99 | per month |


## Frequently asked questions

### Is Private Contacts free?

Private Contacts is free to download, with no in-app purchases.

### Is Mathify free?

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

### Which has better reviews, Private Contacts or Mathify?

Private Contacts is rated higher. Private Contacts averages 5.0 out of 5 from 3 ratings, while Mathify averages 4.6 from 7 ratings.

### Do Private Contacts or Mathify have ads?

Neither Private Contacts nor Mathify shows ads.

### Which is updated more often, Private Contacts or Mathify?

Private Contacts ships an update every 2 weeks, and Mathify every 4 days. Most recently, Private Contacts was updated on October 10, 2026 and Mathify on October 13, 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.*