Comparison

Fast Idea Book vs Clarify

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

Head to head
About

Fast Idea Book

Quickly capture fleeting thoughts via text, voice, or photo with a single tap. Access your ideas through widgets, the Share Sheet, or Siri. Organize and review them later, with advanced features unlocked via subscription.

Highlights
  • One-tap text, voice, and photo capture
  • Home Screen capture widget
  • Share Sheet integration
  • On-device voice transcription
  • Tags and quick review
  • Siri integration
  • iCloud sync
Features
Read full description

A frictionless capture pad for the ideas you would otherwise lose. If you have ever woken at 3 AM with a great idea and nothing to write it on, or watched a brilliant phrase evaporate while you opened a heavier app, Fast Idea Book is for you. It is a calm, on-device idea book built around one job — capture the thought before it fades — and one principle: never make you wait or sign in. Open the app and you are already typing. Quick notes save with a single keystroke. Brainstorm freely without folder rituals, then tag entries afterward when your brain wants structure. Voice memo capture for hands-free moments, brain-dump templates for foggy mornings, and a search that surfaces the half-remembered note in seconds. Home Screen and Lock Screen widgets keep the latest idea visible, and the interface ships in 39 languages with full accessibility. Built for writers, founders, students, designers and anyone whose best ideas arrive at the worst possible moment.

About

Clarify

Read full description

Clarify is a GTD-inspired task manager for iPhone that helps you turn a busy inbox into clear next actions, organized projects, and a trusted weekly review. Capture what has your attention, decide what it means, and move it into the right place: Inbox, Next Actions, Projects, Waiting For, or Someday/Maybe. BUILT FOR THE GTD LOOP Capture quickly Add tasks to your Inbox whenever something comes to mind. Clarify next actions Turn loose thoughts into concrete next steps you can actually do. Organize projects Group multi-step outcomes into projects and keep the next action visible. Review weekly Use the guided Weekly Review to check your inbox, projects, waiting-for items, and someday list. Stay focused Start focus sessions from your tasks when it is time to work. USE CLARIFY WITH iOS Clarify supports Siri and App Shortcuts for common task workflows, including creating tasks, finding tasks, and creating projects. Optional integrations help you work with Apple Reminders, Google Tasks, and CloudKit sync where enabled. FREE TO START Clarify is free to download. Inbox capture and basic next actions stay free. Lifetime Pro unlocks advanced workflows such as sync, integrations, Weekly Review, Focus, and Siri/App Shortcuts. Legacy paid-download users keep Pro access. Clarify is designed for people who want a calm, practical system for managing commitments without turning task management into another project.

Screenshots

Fast Idea Book4 screens
Clarify4 screens

Verdict

The call

The clearest difference is iOS requirement: Fast Idea Book at 18.5 against Clarify's 26.0. On price, update cadence, ads and in-app purchases 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

Fast Idea Book ships an update monthly, Clarify every 2 months. The most recent releases landed on September 29, 2026 and October 13, 2026 respectively.

Scorecard1 real difference · 8 level
Fast Idea Book versus Clarify: the parameters behind the verdict, then further details
ParameterFast Idea BookClarify
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS18.5 — better26.0
Further details — not scored
Size5 MB30 MB
Age rating4+4+
DeveloperBahattin DuranTaric Santos de Andrade

In-app purchases

None

Fast Idea Book

No in-app purchases

None

Clarify

No in-app purchases

Questions

Is Fast Idea Book free?
Fast Idea Book is free to download, with no in-app purchases.
Is Clarify free?
Clarify is free to download, with no in-app purchases.
Do Fast Idea Book or Clarify have ads?
Neither Fast Idea Book nor Clarify shows ads.
Which is updated more often, Fast Idea Book or Clarify?
Fast Idea Book ships an update monthly, and Clarify every 2 months. Most recently, Fast Idea Book was updated on September 29, 2026 and Clarify on October 13, 2026.

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