Comparison

4DI vs Global Audiobook Hub

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

4DI

Features
Read full description

4DI is an offline reference tool for data integrity in regulated environments β€” built for QA, validation, manufacturing, and laboratory teams working under GxP. The app organizes data integrity knowledge into five areas: ALCOA++ principles, regulatory frameworks, the data lifecycle, typical inspection findings, and a glossary. ALCOA++ PRINCIPLES 10 principles, each with a clear definition and practical examples contrasting good practice with a typical violation: - Attributable - Legible - Contemporaneous - Original - Accurate - Complete - Consistent - Enduring - Available - Traceable (added per the EMA guideline on computerised systems and electronic data in clinical trials, 2023) REGULATORY FRAMEWORKS 7 frameworks side by side, each with a summary, core requirements, and a link to the official source: - FDA 21 CFR Part 11 - EU GMP Annex 11 - MHRA GxP Data Integrity Guidance - EMA Guideline on computerised systems and electronic data in clinical trials (2023) - PIC/S PI 041 - WHO TRS 1033, Annex 4 β€” Guideline on data integrity (2021) - ICH Q7 Frameworks are tagged by region (US / EU / International). A comparison view highlights key differences across four topics: audit trail, electronic signatures, risk-based approach, and quality culture & human factors. DATA LIFECYCLE Six phases β€” Creation, Processing, Review & Approval, Reporting, Retention, Archival & Destruction β€” each mapped to its relevant ALCOA++ principles, typical pitfalls, and regulatory focus. INSPECTION FINDINGS 17 findings modeled on public patterns from FDA Warning Letters, Form 483 observations, and EU GMP non-conformities. Organized by category and severity, each finding lists the principles violated, its regulatory basis, and remediation measures, with links to official databases. Full search included. GLOSSARY 29 terms β€” ALCOA terms, regulatory abbreviations (CFR, GMP, GLP, GCP...), technical terms (audit trail, metadata, electronic signature), and quality terms (CAPA, deviation, OOS) β€” each with a definition and context. Bookmark terms for quick access, get a "term of the day," and search even without typing accents. FIVE LANGUAGES 4DI speaks English, German, French, Spanish and Italian. A new installation starts in your iPhone's language when 4DI supports it. You can switch the language any time in the app's Settings. MADE FOR IPHONE DUO Half open, one half holds the definition or finding you picked while the other lets you browse and compare; fully open, list and details sit side by side like a book. BUILT FOR OFFLINE USE Light, dark, or system appearance. Works entirely offline: no accounts, no tracking, no ads, no permissions required. Bookmarks stay on your device. COMMUNITY & SUPPORT Report a bug, suggest a feature, or flag a content correction through the app's Settings β€” linked to robspace's public GitHub hub for discussion. For direct support: support@robspace.de. DISCLAIMER: 4DI is a privately developed helping tool. It is not endorsed, certified, or validated by any regulatory authority. Content is for informational purposes only and must not replace official regulatory guidance or professional advice.

About

Global Audiobook Hub

Features
Read full description

Welcome to Global Audiobook Hub, your ultimate destination for immersive storytelling and spiritual growth! Dive into a world of literature, Dhamma teachings, and entertainment, right from the palm of your hand. Whether you are commuting, working out, or relaxing at home, our app brings thousands of audiobooks and inspiring audio to life. Key Features: β€’ Massive Library: Explore a vast collection of audiobooks across various genres including fiction, non-fiction, mystery, self-help, business, and inspiring Dhamma Teachings. β€’ Dhamma & Spiritual Audio: Listen to peaceful Dhamma talks and teachings to bring mindfulness and wisdom to your daily life. β€’ Smart Playback Control: Adjust the narration speed, set sleep timers, and easily skip ahead or rewind. β€’ Seamless Bookmarks: Never lose your place! Your listening progress is automatically saved. β€’ High-Quality Audio: Enjoy crystal-clear sound quality and professionally narrated stories. Discover new authors, inspiring Dhamma speakers, bestsellers, and timeless classics. Download Global Audiobook Hub today and start your next listening adventure!

Screenshots

4DI4 screens
Global Audiobook Hub4 screens

Verdict

The call

The clearest difference is iOS requirement: 4DI at 18.6 against Global Audiobook Hub's 26.2. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Β· 5 level
4DI versus Global Audiobook Hub: the parameters behind the verdict, then further details
Parameter4DIGlobal Audiobook Hub
PriceFreeFree
Update frequencyWeeklyβ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad β€” better
Requires iOS18.6 β€” better26.2
Further details β€” not scored
Size5 MB8 MB
Age rating4+4+
DeveloperRobert PoetzschKG Digital Service LLC

In-app purchases

None

4DI

No in-app purchases

None

Global Audiobook Hub

No in-app purchases

Questions

Is 4DI free?
4DI is free to download, with no in-app purchases.
Is Global Audiobook Hub free?
Global Audiobook Hub is free to download, with no in-app purchases.
Do 4DI or Global Audiobook Hub have ads?
Neither 4DI nor Global Audiobook Hub shows ads.

Other comparisons