--- title: "Number Book - Reveal Caller ID — App Overview" url: https://marlvel.ai/apps/number-book-reveal-caller-id category: Productivity developer: Tripviler Co., Ltd. platforms: ios rating: 3.4 (5 ratings) pricing: free report_level: overview generated: 2026-05-08 last_verified: "2026-05-08T07:34:56.931Z" --- > **Key Insight:** The app functions as a reverse phone lookup tool that aggregates caller identity, location, and carrier data for unknown numbers. | Metric | Value | |--------|-------| | Category | Productivity | | Rating | 3.4 ★ (5) | | Pricing | free | | Platforms | iOS | | Latest Version (iOS) | 1.0.1 | | Developer | Tripviler Co., Ltd. | ## What is Number Book - Reveal Caller ID? Number Book is a utility tool designed to provide caller identification and metadata for unknown phone numbers. The app offers insights into caller identity, geographic location, and network details to help users manage incoming communications. ## Key Features - **Name Identification**: Instantly retrieves the name associated with a phone number to provide context for incoming calls. - **Location Tracker**: Identifies the geographic location of a caller to distinguish between local and international contacts. - **Carrier Detection**: Determines the network provider associated with a number to help estimate potential call costs. - **Line Type Recognition**: Categorizes phone numbers as either mobile devices or landlines. ## Who is it for? Individuals seeking to identify unknown callers and verify the origin or carrier of specific phone numbers. ## Links - [App Store](https://apps.apple.com/us/app/number-book-reveal-caller-id/id6503051964?uo=4) - [Full Intelligence Report](https://marlvel.ai/apps/number-book-reveal-caller-id) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/number-book-reveal-caller-id).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*