Authora vs SFD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Authora
This writing companion helps aspiring authors reclaim lost minutes for their book projects. It offers tools for writing, storyboarding, and self-publishing directly from a mobile device, turning commutes and waiting times into productive writing sessions.
- Six writing format templates
- Rich text editor optimized for mobile
- Storyboard for characters, plot, and world-building
- Export to EPUB/PDF for self-publishing
- Speech-to-text dictation
- On-device writing analysis
- Encrypted cloud sync (Premium)
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Turn waiting into writing. Most people who want to write a book never finish one - not for lack of ideas, but for lack of time to sit down. Authora is a mobile writing companion built for the life you actually have. Waiting rooms, commutes, flight delays, lunch breaks - the minutes that usually disappear into doomscrolling, reclaimed for the book you've always meant to write. WRITE ANYWHERE Six format templates - novel, journal, manuscript, academic paper, non-fiction, poetry collection. Rich text editor optimised for phones and tablets, not a desktop UI stuffed onto a small screen. Auto-save every two seconds. Focus mode for distraction-free writing. Preview mode to read your draft as a reader will see it. STORYBOARDING THAT MATCHES HOW WRITERS THINK Characters with bios, traits, and relationships. Plot arcs with scenes you can link to chapters. World-building notes. Colour-coded labels. Keep the people, places, and threads of your story organised without leaving your phone. FROM BLANK PAGE TO PUBLISHED BOOK Authora isn't just a writing app - it's a self-publishing pipeline. When your draft is done, add a cover image, and export as EPUB or PDF that's ready to upload straight to Amazon KDP, Apple Books, or Kobo. Front matter, back matter, TOC, metadata - all handled. Your finished book goes into your personal library inside Authora too, readable with a built-in ebook reader. No separate formatting tool. No desktop required. Draft to published, all on your phone. CAPTURE ON THE GO Speech-to-text dictation with live transcription. Chapter import from .docx, .rtf, and .txt - start with existing drafts, no retyping. On-device writing analysis flags passive voice, adverb overuse, clichés, and readability issues as you write. FREE FOREVER, PREMIUM WHEN YOU'RE READY Full writing experience, export, personal library, and a starter storyboard - all free, all local, no account required. Premium ($4.99/mo or $49.99/yr) adds encrypted cloud sync and backup across phone and tablet, unlimited storyboarding, inline figures with captions, and priority support. PRIVATE BY DEFAULT Free users never sign in. Premium users' chapters, world notes, character bios, and plot descriptions are encrypted at rest with AES-256, and in transit with TLS - even in a breach, your draft stays unreadable. Biometric app lock on both platforms. We never read your work, never train on your writing, never sell your data. BUILT FOR PHONES AND TABLETS Native iOS App. Dark and light theme. Responsive layout on tablets. Biometric unlock. Full offline support. Dashboard showing word count trends and your completion stats. The book is already in you. Authora is where you finish it.
SFD
This app helps you overcome writer's block by forcing you to write a first draft without the ability to edit or reread. It uses timed bursts and nudges to keep you moving forward, allowing you to flag sections for later revision.
- Forward-only writing
- Timed writing bursts
- Cursor nudges for stalls
- Flagging sections for revision
- Plain text export
- Offline functionality
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Writing apps help with the easy half — outlines, fonts, folders, word-count trophies. The hard half is producing a bad first version of something, and that's all SFD does. SFD is forward-only. You write in a burst, the earlier lines dim and scroll away, and you can't go back to fix them. You can't edit a draft into existence, so SFD won't let you try until it's out. How it works: — A go is a timed burst. You write. You don't reread. — Stall for a few seconds and you get a shove — a nudge that gets blunter the longer you stare at the cursor. — Hit a line you hate? Drop a later and keep moving. Your flags become a punch-list for when you revise. — A finished part is a chunk. A stack of chunks is the Pile — your whole first draft. — When it's done, send it out as plain text, to wherever you actually revise. Drafting is free. Every go, every later, every export — no account, no trial clock, no nagging. THE BIG MONTH is free too: 50,000 words of a novel's first draft between November 1 and 30. SFD shows your words today and how many a day finishes it, lights up a November calendar on every day you write, marks 10,000, 25,000 and 50,000, and gives you a BIG MONTH 2026 stamp and finisher card you can only earn that November. One thing costs money: SFD Habit Tracking, a 99-cent one-time unlock for the habit layer — the streak map and year wall, the month goal, the quiet reminder, stamps, share cards, and the home-screen widget, which carries THE BIG MONTH in November. The scoreboard, not the game. If you bought SFD back when the app itself cost money, the habit layer is yours automatically. What SFD won't do: format, outline, sync, collaborate, or write the draft for you. You write the bad version. A chunk has to get written; inside that, anything goes. Your words stay yours. Every chunk is a plain-text file on your device. No proprietary format, no servers. SFD makes no network calls at all — it can't lose your words and it can't trap them. Get the first draft out. You can make it good later, somewhere with a real keyboard.
Screenshots
Verdict
The clearest difference is monetization model: Authora at freemium against SFD's paid. Authora also leads on iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume 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
Both are free to download. Authora sells 2 in-app purchases, starting at $4.99 per month and SFD sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Authora against 5.0 for SFD. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Authora ships an update every 9 days, SFD every 8 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.
| Parameter | Authora | SFD |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 9 days | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 41 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Ronan Campbell | Daniel James Kinney-Spears |
Customer experience
Authora
SFD
In-app purchases
Authora
- Authora Premium (Monthly)$4.991 Month
- Authora Premium (Yearly)$49.991 Year
SFD
- SFD Habit Tracking$0.99









