Comparison

Ghostwriter vs Replyze

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

Head to head
About

Ghostwriter

Features
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Ghostwriter is the AI-powered book writing app that takes you from a rough idea to a polished manuscript โ€” 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 โ€” 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 โ€” 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 โ€ข Voice Interviews โ€” talk naturally with an AI interviewer that asks smart follow-up questions. No typing required. โ€ข Structure Studio โ€” design your book's architecture with drag-and-drop chapters and sections. โ€ข Content Blueprints โ€” AI generates detailed objectives and summaries for every section before writing begins. โ€ข Writing Theater โ€” watch your book come to life with real-time AI writing, progress tracking, and word counts. โ€ข Review Suite โ€” approve, edit, or request rewrites section by section with full source-material visibility. โ€ข Multi-Input Support โ€” answer questions with text, voice recordings, photos, documents, audio files, and video. โ€ข Smart Document Analysis โ€” upload research PDFs and Ghostwriter extracts key themes, quotes, and insights automatically. โ€ข Export โ€” DOCX, PDF, EPUB, Markdown, and plain text. โ€ข Works on iPhone and iPad, with Mac support on the way. WHO IS IT FOR? โ€ข First-time authors who don't know where to start โ€ข Entrepreneurs writing thought-leadership books โ€ข Coaches and consultants turning expertise into published works โ€ข Memoirists capturing life stories โ€ข 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

Replyze

Features
Read full description

Reply to anything in seconds โ€” in your own voice. Replyze reads any post, comment, or DM and instantly writes four ready-to-send replies in your tone. No more staring at the cursor, no more generic "Great post!" โ€” just smart, personal replies you'll actually want to send. Because Replyze learns your voice, every reply sounds like you wrote it. It even scores how relevant each post is to you โ€” so you spend time only where it counts. WHY PEOPLE LOVE REPLYZE - Four replies, instantly โ€” pick the tone: Professional, Witty, Supportive, or Engage. - In YOUR voice โ€” add your profile once and replies match how you actually write. - "% relevant to you" โ€” know at a glance whether a post is worth your reply. - Works in every app โ€” the Replyze keyboard drops replies straight into WhatsApp, Instagram, LinkedIn, X, Messages, and email โ€” anywhere you type. - Share-to-reply โ€” share any post to Replyze and get four replies back in seconds. - Reply from a screenshot โ€” paste a screenshot and Replyze reads it for you. BUILT FOR PEOPLE WHO SHOW UP ONLINE Founders, creators, freelancers, job-seekers, and social sellers use Replyze to stay active on LinkedIn, Instagram, Reddit, and X without losing hours in the comment box. Grow your network, never miss a reply, and sound sharp every time. PRIVATE BY DESIGN The posts you reply to are never stored on our servers. Your replies are yours. Export or delete everything, any time. FREE TO START - 5 free replies every day โ€” no credit card, just an Apple ID. - Replyze Pro: unlimited replies, no ads, and voice matching. 7-day free trial, then $5.99/month or $39.99/year. Download Replyze and write the smartest reply you've never written. Subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Payment is charged to your Apple ID; manage or cancel in App Store โ†’ Subscriptions. Terms: https://replyze.co/terms ยท Privacy: https://replyze.co/privacy

Screenshots

Ghostwriter4 screens
Replyze4 screens

Verdict

The call

The clearest difference is update cadence: Replyze at daily against Ghostwriter's every 3 days. Replyze also leads on iOS requirement (17.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Ghostwriter sells 3 one-off in-app purchases and Replyze sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ghostwriter ships an update every 3 days, Replyze daily. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard2 real differences ยท 4 level
Ghostwriter versus Replyze: the parameters behind the verdict, then further details
ParameterGhostwriterReplyze
PriceFreeFree
Update frequencyEvery 3 daysDaily โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS26.017.6 โ€” better
Further details โ€” not scored
Size40 MB13 MB
Age rating12+4+
DeveloperApp Launchers LLCMuhammad Usman Zafar

In-app purchases

3 purchases

Ghostwriter

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

Replyze

Subscriptions2
  • Replyze Pro7 Days trial$7.991 Month
  • Replyze Pro7 Days trial$59.991 Year

Questions

Is Ghostwriter free?
Ghostwriter is free to download, with in-app purchases available.
Is Replyze free?
Replyze is free to download, with in-app purchases available.
Do Ghostwriter or Replyze have ads?
Neither Ghostwriter nor Replyze shows ads.
Which is updated more often, Ghostwriter or Replyze?
Ghostwriter ships an update every 3 days, and Replyze daily. Most recently, Ghostwriter was updated on November 4, 2026 and Replyze on October 31, 2026.

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