Comparison

Box for Thought vs CRTX

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

Head to head
About

Box for Thought

Features
Read full description

Does your mind ever feel… cluttered? Like a room full of tangled thoughts and worries, with no space left to simply be? What if you had a quiet, cozy box just for them? Welcome to Box for Thought, your personal sanctuary for the mind. This isn’t a to-do list demanding action or a race to the finish line. It’s a gentle companion for your inner world, a place where the goal isn’t to “fix” everything, but to explore, understand, and grow with every step. Your Gentle Journey with Box for Thought: 1. Share a Thought, Lighten Your Mind Whenever a worry, a question, or a fleeting idea pops into your head, gently place it in your box. It’s a simple act of release, giving your mind the space it needs to feel calm and clear again. 2. Receive 3 Little Sparks of Insight For every thought you share, our thoughtful AI will offer three gentle perspectives—like little sparks of light in the dark. They aren’t strict rules, but new paths to wander down, new ways to look at your world. 3. Explore & See How It Feels Choose an idea that resonates with you and give it a try. There’s no pressure, no right or wrong. Afterwards, simply reflect on whether it was helpful. Every attempt, successful or not, is a footprint on your path, a sign that you are moving forward. 4. Meet Your Unique Mind-Portrait As you continue your journey, Box for Thought will begin to understand the beautiful, unique way your mind works. It will reveal a “Mind-Portrait” just for you. Are you a “Multitasking Maestro” with a brain full of sparkling ideas? Or perhaps a “Deep-Night Dreamer” who finds clarity in the quiet? Discover the hidden superpowers of your own thinking style and be inspired to keep exploring. A Cozy Space for Every Kind of Thinker: For the Creative Sparklers: Whose minds leap with a million brilliant ideas at once. For the Deep Feelers: Who experience the world with great sensitivity and need a gentle outlet. For the Thoughtful Dreamers: Who have big ideas but need a small, kind nudge to begin. For the Midnight Ponderers: Whose minds come alive when the world is asleep. For the Curious Explorers: Who love to experiment with different paths and possibilities. Your story of growth is not written in giant leaps, but in the quiet, consistent care you give to your inner world. It all starts with a single thought. Let’s begin. Your current trial subscription is about to change to a paid subscription. The subscription fee will be automatically charged to your iTunes account upon confirmation of purchase. You will be automatically charged at the same price and enjoy the same period of privileges for auto-sub that can be turned off at least 24 hours before the end of the current subscription period to take effect. Re-sub fee will be automatically charged to your account within 24 hours before the end of the current subscription period. Users can self-manage subscriptions or turn off auto-sub at iTunes Account settings. All unused periods of free trial shall be forfeited upon purchasement of subscription. Privacy Policy:https://flyingfishmart.com/privacy/notice/en.html Terms of Use:https://flyingfishmart.com/terms/notice/en.html

About

CRTX

This app acts as a shared digital memory for your household, allowing you to save voice notes, photos, links, and documents. You can then ask questions in plain English to retrieve information saved by anyone in your group.

Highlights
  • Capture voice notes, photos, links, and PDFs
  • Search contents using natural language
  • Create private or shared memory pools
  • Assign and track tasks within shared pools
  • Automatic recognition of people in saved items
  • Apple Watch and share extension support
Features
Read full description

Your family's memory, one question away. CRTX is the memory you share with the people you live with. Save voice notes, photos, links, PDFs, and audio files. Then ask a question in plain English and get the answer back across everything anyone in your pool has saved. WHAT YOU CAN DO • Capture anything. Type a thought, paste a link, hold to record a voice note, drop a PDF, snap a photo of a flyer or receipt. CRTX reads what's inside, so you can search the contents — not just the filename. • Ask anything. "What did the doctor say?" "Where's the school calendar?" "What did Sarah send about Friday?" CRTX finds it in seconds and shows you the source. • Pool with the people you share a life with. Your personal pool stays private. Shared pools are for the people you're in this with — partner, kids, siblings, your closest friends. • Tasks, on their own or tied to something you saved. Assignable in shared pools. Recurring. Reminders before, at, and after the deadline. • People show up automatically. CRTX recognizes names in what you save and ties items to the right person. Your People tab becomes a living memory of who said what, organized around the people in your life. • Apple Watch + share extension. Record voice notes from your wrist. Save anything from any iPhone app with the share button. WHO IT'S FOR Built first for families. Couples managing the everyday — kids, school, the dentist, the babysitter, the grocery list that lives in three places at once. Parents who keep losing the things their kids told them. Households tired of the same conversation: "I know we wrote that down somewhere." Just as good for any group that shares a life or a project. Friend groups planning a trip across a hundred photos and links. Founders catching customer feedback fragments. Roommates juggling bills and repairs. Or just you on your own — your personal pool is yours alone. CORA Cora is your help assistant inside CRTX. Ask her how a feature works, where to find a setting, or what an option does. She knows the app inside and out — so you don't have to. SUBSCRIPTION Choose Personal for just yourself, or Family for up to 6 people. Both start with a 7-day free trial. Cancel anytime in Settings ▸ Subscription ▸ Manage Subscription inside the app. Either plan includes unlimited capture, AI question-answering, shared pools, Apple Watch, and the share extension. LANGUAGES English, German, French. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://crtx.live/privacy

Screenshots

Box for Thought4 screens
CRTX4 screens

Verdict

The call

The clearest difference is update cadence: Box for Thought at every 5 weeks against CRTX's every 5 months. Box for Thought also leads on iOS requirement (15.0 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. Box for Thought sells 3 in-app purchases, starting at $1.99 per month and CRTX sells 4 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Box for Thought ships an update every 5 weeks, CRTX every 5 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Box for Thought versus CRTX: the parameters behind the verdict, then further details
ParameterBox for ThoughtCRTX
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 5 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.0 — better26.0
Further details — not scored
Size59 MB25 MB
Age rating4+4+
DeveloperFlying Fish Mart Technology Co.,Ltd.Lars Janssen

In-app purchases

3 purchases

Box for Thought

Subscriptions3
  • Monthly$1.991 Month
  • Quarterly$3.993 Months
  • Annual$14.991 Year
4 purchases

CRTX

Subscriptions4
  • CRTX Personal Monthly7 Days trial$7.991 Month
  • CRTX Family Monthly7 Days trial$12.991 Month
  • CRTX Personal Annual7 Days trial$69.991 Year
Show 1 more
  • CRTX Family Annual7 Days trial$119.991 Year

Questions

Is Box for Thought free?
Box for Thought is free to download, with in-app purchases available.
Is CRTX free?
CRTX is free to download, with in-app purchases available.
Do Box for Thought or CRTX have ads?
Neither Box for Thought nor CRTX shows ads.
Which is updated more often, Box for Thought or CRTX?
Box for Thought ships an update every 5 weeks, and CRTX every 5 months. Most recently, Box for Thought was updated on November 5, 2026 and CRTX on October 31, 2026.

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