Comparison

simplido vs Fast Idea Book

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

Head to head
About

simplido

Features
Read full description

Simplido is not another list manager or todo tracker. Inspired by and following the GTD® methodology created by David Allen, it helps you to manage your actions, projects, ideas or anything you want to keep track of outside your head. It's built for people who want to become and most importantly: stay productive. Unique combination of education, methodology, principles and tools to form a complete productivity solution. FEATURES OF SIMPLIDO The GTD® methodology is supported via the following features: - Support of GTD® concepts such as Next Actions, Projects, Waiting For, Someday/Maybe - Inbox with Zero Inbox process support - Guided Weekly Review® and reminders - Lists to organize your things by context (devices, locations, people) - Tags to group entries scattered across your system - Areas of Focus Assisting features - Support for recurring entries to automate creating new ones automatically, reducing the maintenance effort - Reminders about entries and Weekly Review to stay on top of your things - Notes for entries to keep track of important information over time - Customize colors and icons for your lists and tags to make simplido more personal Access your content when and where you need it: - Offline mode after sign-in - your data available to you without internet connectivity - Multi-platform support - iOS, Android and Web apps so that you can access your data from anywhere WILL IT BE A GOOD FIT? If you're someone who wants to improve your sense of productivity but never used any productivity methodology at all, simplido is a great start! For a seasoned GTD® practitioner who's looking for digital tooling that follows the methodology, simplido will feel like a second home. Simplido has been created to help people start with a productive lifestyle. Regardless if you are familiar with any task/project trackers or not, simplido introduces everyone to the basic concepts of the methodology and assisting principles. Our goal is to kick-start your productivity right away. Simplido is not another list manager or todo tracker. Following the GTD® methodology it uses the language and concepts introduced by GTD® to help you manage your actions, projects, ideas or anything you want to keep track of outside your head. EARLY ACCESS PROGRAM We're currently running our Early Access Program, where everyone can enjoy the full capabilities of simplido. In return, all we ask for is honest feedback which will help us to improve. Using simplido requires creating a dedicated simplido account.

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.

Screenshots

simplido4 screens
Fast Idea Book4 screens

Verdict

The call

The clearest difference is update cadence: simplido at weekly against Fast Idea Book's monthly. simplido also leads on iOS requirement (16.4 vs 18.5). 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

simplido ships an update weekly, Fast Idea Book monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
simplido versus Fast Idea Book: the parameters behind the verdict, then further details
ParametersimplidoFast Idea Book
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNoNo
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better18.5
Further details — not scored
Size85 MB5 MB
Age rating4+4+
DeveloperSorcery Studio Grzegorz GodlewskiBahattin Duran

In-app purchases

None

simplido

No in-app purchases

None

Fast Idea Book

No in-app purchases

Questions

Is simplido free?
simplido is free to download, with no in-app purchases.
Is Fast Idea Book free?
Fast Idea Book is free to download, with no in-app purchases.
Do simplido or Fast Idea Book have ads?
Neither simplido nor Fast Idea Book shows ads.
Which is updated more often, simplido or Fast Idea Book?
simplido ships an update weekly, and Fast Idea Book monthly. Most recently, simplido was updated on November 3, 2026 and Fast Idea Book on October 30, 2026.

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