Comparison

Ghostwriter vs Authenticator

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

Head to head
About

Ghostwriter

Features
Read full description

Ghostwriter is the AI-powered book writing app that takes you from a rough idea to a polished manuscript — without staring at a blank page. HOW IT WORKS Ghostwriter follows a proven six-step authoring flow designed for people who have stories, expertise, and ideas but struggle to organize them into a book: 1. Start with a topic. Tell us what your book is about — one sentence or a full page. We meet you where you are. 2. AI builds your structure. Ghostwriter generates a custom Table of Contents with chapters and sections tailored to your topic. Review it, tweak it, make it yours. 3. Detailed blueprints. Each chapter gets objectives, goals, and section breakdowns — the skeleton that makes your book work. 4. AI interviews you. This is where the magic happens. Ghostwriter asks targeted questions designed to pull your unique stories, insights, and expertise out of you, section by section. Answer by typing, talking, or uploading documents, photos, audio, and video. 5. AI writes your book. Using your structure and your answers, Ghostwriter drafts every chapter in your voice. Watch it happen in real time in the Writing Theater. 6. Review and refine. Go through each section, approve what works, request rewrites for what doesn't. You stay in control of every word. KEY FEATURES • Voice Interviews — talk naturally with an AI interviewer that asks smart follow-up questions. No typing required. • Structure Studio — design your book's architecture with drag-and-drop chapters and sections. • Content Blueprints — AI generates detailed objectives and summaries for every section before writing begins. • Writing Theater — watch your book come to life with real-time AI writing, progress tracking, and word counts. • Review Suite — approve, edit, or request rewrites section by section with full source-material visibility. • Multi-Input Support — answer questions with text, voice recordings, photos, documents, audio files, and video. • Smart Document Analysis — upload research PDFs and Ghostwriter extracts key themes, quotes, and insights automatically. • Export — DOCX, PDF, EPUB, Markdown, and plain text. • Works on iPhone and iPad, with Mac support on the way. WHO IS IT FOR? • First-time authors who don't know where to start • Entrepreneurs writing thought-leadership books • Coaches and consultants turning expertise into published works • Memoirists capturing life stories • Anyone with a book inside them that needs help getting it out Free to start: every new account includes enough credits to generate a full Table of Contents and Blueprint. Book Credits (available as in-app purchases) cover the interview, full drafting, and rewrites for an entire book. Your ideas. Your voice. Your book. Ghostwriter just makes it happen.

About

Authenticator

This app generates secure, time-based one-time passwords for your online accounts. It features a privacy-focused design with local storage and optional biometric protection. Easily set up accounts by scanning QR codes or manually entering details.

Highlights
  • Time-based one-time passwords (TOTP)
  • Secure local storage with iOS Keychain
  • QR code scanner for setup
  • Optional Face ID / Touch ID lock
  • No ads or tracking
  • Offline functionality
Features
Read full description

Authenticator - Shield App helps you protect online accounts with secure two-factor authentication codes and a private password vault. Scan a 2FA QR code, add your account, and get fresh one-time login codes whenever you need them. Store passwords locally, lock the app with Face ID or Touch ID, and keep sensitive secrets on your iPhone. Why users choose Authenticator: • Fast QR code setup for TOTP accounts • 6-digit one-time codes with countdown timer • Private password vault stored on this device • Optional Face ID / Touch ID app lock • Clean dark design made for quick copy and login • Works offline after your accounts are added Privacy first: Your 2FA secrets and saved passwords stay on your device and are protected with iOS Keychain technology. The app is built for simple, private account protection without extra setup. Important: This app is an independent authenticator and password manager utility. Keep backup codes from your services in a safe place in case you lose access to your device. Privacy Policy: https://authenticators-app.com/privacy EULA: https://authenticators-app.com/eula

Screenshots

Ghostwriter4 screens
Authenticator4 screens

Verdict

The call

The clearest difference is update cadence: Ghostwriter at every 3 days against Authenticator's every 8 days. Authenticator's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support 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. Ghostwriter sells 3 one-off in-app purchases and Authenticator sells 3 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ghostwriter ships an update every 3 days, Authenticator every 8 days. The most recent releases landed on September 22, 2026 and September 3, 2026 respectively.

Scorecard2 real differences · 8 level
Ghostwriter versus Authenticator: the parameters behind the verdict, then further details
ParameterGhostwriterAuthenticator
PriceFreeFree
Rating—3.9 (13 ratings) — better
Positive reviews—33.3% of reviews
Number of ratings—13 — better
Update frequencyEvery 3 days — betterEvery 8 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size40 MB20 MB
Age rating12+4+
DeveloperApp Launchers LLCNOOX MEDIA LTD

In-app purchases

3 purchases

Ghostwriter

One-time3
  • Single Book Credit$199.99
  • 3 Book Credits$499.99
  • 5 Book Credits$799.99
3 purchases

Authenticator

Subscriptions3
  • Weekly Subscription3 Days trial$9.997 Days
  • Weekly subscription noTrial$9.997 Days
  • Yearly Subscription$59.991 Year

Questions

Is Ghostwriter free?
Ghostwriter is free to download, with in-app purchases available.
Is Authenticator free?
Authenticator is free to download, with in-app purchases available.
Do Ghostwriter or Authenticator have ads?
Neither Ghostwriter nor Authenticator shows ads.
Which is updated more often, Ghostwriter or Authenticator?
Ghostwriter ships an update every 3 days, and Authenticator every 8 days. Most recently, Ghostwriter was updated on September 22, 2026 and Authenticator on September 3, 2026.

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