# Number Book vs PDF Converter ‧

The clearest difference is review sentiment: Number Book at 40% against PDF Converter ‧'s 0%. Number Book also leads on ads (none vs shown) and rating (4.5 vs 4.3). PDF Converter ‧'s advantage is update cadence (every 9 days vs every 5 months) and ratings volume (146 vs 44). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Number Book sells 5 in-app purchases, starting at $8.99 per 7 days and PDF Converter ‧ sells 7 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Number Book holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 44 and 146 respectively. Written reviews point the same way: 40% of Number Book's written reviews are positive against 0% of PDF Converter ‧'s.

Number Book ships an update every 5 months, PDF Converter ‧ every 9 days. The most recent releases landed on September 13, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Number Book | PDF Converter ‧ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (44 ratings)](https://appshunter.io/ios/app/number-book/id6475397443/reviews)** | [4.3 (146 ratings)](https://appshunter.io/ios/app/pdf-converter/id6502760201/reviews) |
| Number of ratings | 44 | **146** |
| Positive reviews | **40.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 46 MB | 46 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [ByteSpeed](https://appshunter.io/developer/1724157365) | [CodeEx Technology](https://appshunter.io/developer/1745047526) |

## What reviewers say

### Number Book

[App page](https://appshunter.io/ios/app/number-book/id6475397443)

Identify unknown callers, block spam, and manage your contacts with a privacy-focused address book. Access a vast database for reverse phone lookups and public record information to enhance communication security.

**Highlights:** Privacy contact management, Reverse phone number lookup, Identify spam and scam calls, Large phone number database, Caller information retrieval

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly VIP User | $8.99 | per 7 days |
| Monthly VIP User | $19.99 | per month |
| Yearly VIP User | $39.99 | per year |
| Yearly 3DaysTrail VIP User | $39.99 | per year |
| Lifetime VIP User | $45.99 | one-time |


### PDF Converter ‧

[App page](https://appshunter.io/ios/app/pdf-converter/id6502760201)

Easily convert various file types to and from PDF format. Supports images, documents, and web pages, with options for signing, sharing, and printing converted files.

**Highlights:** Convert various file formats to PDF, Convert PDF to other formats, Import files from photo album, iCloud, or camera, Sign and edit converted PDFs, Share converted files easily, Print PDF files, Supports web page to PDF conversion

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Weekly | $6.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Weekly VIP | $11.99 | per 7 days |
| Weekly VIP - 7-Day Intro Offer | $14.99 | per 7 days |
| VIP Yearly | $39.99 | per year |
| VIP Yearly 3 Day Trail | $39.99 | per year |
| VIP Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Number Book free?

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

### Is PDF Converter ‧ free?

PDF Converter ‧ is free to download, with in-app purchases available.

### Which has better reviews, Number Book or PDF Converter ‧?

Number Book is rated higher. Number Book averages 4.5 out of 5 from 44 ratings, while PDF Converter ‧ averages 4.3 from 146 ratings.

### Do Number Book or PDF Converter ‧ have ads?

PDF Converter ‧ shows ads; Number Book does not.

### Which is updated more often, Number Book or PDF Converter ‧?

Number Book ships an update every 5 months, and PDF Converter ‧ every 9 days. Most recently, Number Book was updated on September 13, 2026 and PDF Converter ‧ on September 25, 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.*