# Crew Tools.Net vs Number Book

The clearest difference is rating: Number Book at 4.2 against Crew Tools.Net's 3.5. Number Book also leads on ratings volume (371 vs 13). Crew Tools.Net's advantage is in-app purchases (none vs 4) and review sentiment (20% vs 0%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Number Book sells 4 in-app purchases, starting at $8.99 per 7 days. Crew Tools.Net asks for nothing beyond the download.

Number Book holds the better App Store score, 4.2 against 3.5. That said, the two scores are not equally well evidenced: Number Book has 371 ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 20% of Crew Tools.Net's written reviews are positive against 0% of Number Book's, so the app with the better star average is not the one people write more warmly about.

Crew Tools.Net ships an update every 2 weeks, Number Book every 3 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Crew Tools.Net | Number Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (13 ratings)](https://appshunter.io/ios/app/crew-toolsnet/id1500826062/reviews) | **[4.2 (371 ratings)](https://appshunter.io/ios/app/number-book-al-kashif/id1642012193/reviews)** |
| Number of ratings | 13 | **371** |
| Positive reviews | **20.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 86 MB | 29 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mohammed Halabi](https://appshunter.io/developer/1500826061) | [Prism Lens Limited](https://appshunter.io/developer/6780958937) |

## What reviewers say

### Crew Tools.Net

[App page](https://appshunter.io/ios/app/crew-toolsnet/id1500826062)

This utility app assists airline crews in managing their flight line bids. It provides a streamlined way to organize and select desired flight schedules.

**Highlights:** Flight line bidding assistance, Schedule management, SV crew support, Intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Number Book

[App page](https://appshunter.io/ios/app/number-book-al-kashif/id1642012193)

Identify unknown callers and block spam calls and SMS with custom filtering rules. Perform reverse phone number lookups to get information on any number. Protect yourself from unwanted communication.

**Highlights:** Unknown caller identification, Reverse phone number lookups, SMS filtering, Custom filtering rules, Spam call blocking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Membership | $8.99 | per 7 days |
| Weekly Membership | $8.99 | per 7 days |
| Yearly membership | $29.99 | per year |
| Lifetime membership | $48.99 | one-time |


## Frequently asked questions

### Is Crew Tools.Net free?

Crew Tools.Net is free to download, with no in-app purchases.

### Is Number Book free?

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

### Which has better reviews, Crew Tools.Net or Number Book?

Number Book is rated higher. Crew Tools.Net averages 3.5 out of 5 from 13 ratings, while Number Book averages 4.2 from 371 ratings.

### Do Crew Tools.Net or Number Book have ads?

Neither Crew Tools.Net nor Number Book shows ads.

### Which is updated more often, Crew Tools.Net or Number Book?

Crew Tools.Net ships an update every 2 weeks, and Number Book every 3 weeks. Most recently, Crew Tools.Net was updated on November 3, 2026 and Number Book on November 7, 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.*