Comparison

Book.io vs Regal Vault

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

Head to head
About

Book.io

Manage your digital library of eBooks and audiobooks with a user-friendly interface. Customize your reading experience with various themes and text settings, and enjoy features like bookmarking and embedded media. Own and control your digital content.

Highlights
  • eBook and Audiobook management
  • Customizable themes and text settings
  • Seamless navigation and bookmarking
  • Audiobook playback and reading/listening switch
  • Embedded video and fixed format support
  • Social media login
Features
Read full description

Book.io is the eBook and Audiobook app that empowers you to manage your digital library on your terms. Transform your reading experience with a range of features crafted for maximum enjoyment. Key Features: 1. Effortless Reading: Navigate your eBooks seamlessly with our user-friendly interface. 2. Customizable Themes: Personalize your reading environment with Light, Paper, or Dark themes. 3. Tailored Text Settings: Adjust text size, line spacing, and fonts, including options like Open Dyslexic. 4. Bookmarking and Navigation: Easily bookmark pages and navigate through your reading material. 5. Media Support: Immerse yourself with audiobooks, embedded videos, and fixed format support. 6. Dark Mode: Read comfortably in low-light settings with our sleek dark mode. 7. Multi-Language Support: Experience Book.io in Spanish or English for a tailored touch. Why Choose Book.io? Embrace the future while preserving the past with our collection of Unchangeable, Unburnable, Unbannable eBooks and Audiobooks you own and control. Join our community of satisfied readers today. Download Book.io and embark on your journey of actual digital ownership. What’s New: - Audiobook Support: Dive deeper into your favorite stories with our new audiobook feature. Switch between reading and listening anytime, anywhere. - Social Media Connection: Book.io is now easier than ever to get started. Log in or create an account using your existing social media credentials.

About

Regal Vault

Read full description

Most people who love antiques learn in the same scattered way: a paragraph from a reference book, a remark overheard at a sale, a guess at a hallmark that is never confirmed. RegalVault replaces that with structured practice. It covers fifteen fields of the decorative arts and teaches each one through short interactive lessons, then makes you prove what you learned against a question bank that remembers your weak points. Every lesson is written as a dialogue. It presents one idea, stops, and asks you to make a judgement before it goes on. A lesson on porcelain will show you two paste bodies and ask which one rings; a lesson on case furniture will show you a dovetail and ask what it says about the decade. Each one closes with a mini challenge, an observation exercise, an authenticity check and a set of summary notes you keep. What you can study and do: - Fifteen museum cabinets covering furniture, porcelain, silver, paintings, clocks, glass, books, sculpture, coins, militaria, jewellery, ceramics, textiles, lighting and decorative objects. - Object files with production period, country of origin, common materials, identifying characteristics, authenticity indicators, restoration guidance, collector notes and historical background. - A personal collection that fills wooden display cabinets as you work, recording rarity, timeline, country, period, material and preservation difficulty for every piece you catalogue. - Museum stamps and archive pages awarded for completed lessons, plus achievement medals and artifact series to complete. - An Academy with six training modes: a daily lesson, multiple choice quizzes, era identification, material challenges, original-or-reproduction judgements, and a twenty question collector examination. - Automatic repetition of anything you answer incorrectly, so weak distinctions keep returning until they are mastered. - A weekly timed challenge with its own rewards. - A searchable archive of historical periods, furniture styles, ceramic types, wood species, metal finishes, makers marks, hallmarks, artists, manufacturers, restoration techniques, auction vocabulary and museum terminology, with timelines and cross references. - Bookmarks and personal notes on any archive article. - A collector dashboard showing rank, experience, museum level, daily streak, weekly progress, completed lessons, collection completion, examination accuracy, study time and a learning calendar. - Selectable appearance themes and an adjustable typewriter reveal speed for lesson prose. Ranks run from Visitor through Collector, Curator, Restorer and Historian to Master Curator. Each promotion is earned against the question bank rather than handed out for time spent in the application. RegalVault asks nothing of you in return. There is no account to create, no subscription gate in front of the lessons, no advertising and no analytics. The entire corpus of lessons, archive articles and examination questions ships inside the application, so every feature works with no connection at all. Your progress record is written to your device's private storage and stays there. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Book.io4 screens
Regal Vault4 screens

Verdict

The call

The clearest difference is ads: Book.io at none against Regal Vault's shown. Regal Vault's advantage is update cadence (every 6 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Book.io ships an update every 2 months, Regal Vault every 6 days. Both last shipped on October 24, 2026.

Scorecard2 real differences · 8 level
Book.io versus Regal Vault: the parameters behind the verdict, then further details
ParameterBook.ioRegal Vault
PriceFreeFree
Rating4.8 (58 ratings) — better—
Positive reviews96.7% of reviews—
Number of ratings58 — better—
Update frequencyEvery 2 monthsEvery 6 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.016
Further details — not scored
Size31 MB8 MB
Age rating12+17+
DeveloperBook.io, IncMoin Macarthur

In-app purchases

None

Book.io

No in-app purchases

None

Regal Vault

No in-app purchases

Questions

Is Book.io free?
Book.io is free to download, with no in-app purchases.
Is Regal Vault free?
Regal Vault is free to download, with no in-app purchases.
Do Book.io or Regal Vault have ads?
Regal Vault shows ads; Book.io does not.
Which is updated more often, Book.io or Regal Vault?
Book.io ships an update every 2 months, and Regal Vault every 6 days. Most recently, Book.io was updated on October 24, 2026 and Regal Vault on October 24, 2026.

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