ThoughtsLeft vs Cerebro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ThoughtsLeft
Capture your fleeting thoughts, ideas, and worries quickly through typing or voice. Organize them into tasks or notes, or simply let them go. Gain insights into your thinking patterns and maintain mental clarity.
- Instant thought capture (type or voice)
- Organize thoughts with swipe gestures
- Spoken Thought for hands-free capture
- Time-based task manager
- Notes repository
- Activity insights
- Optional Pro upgrade for advanced features
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ThoughtsLeft is a brain dump app for people who think too much: late-night spirals, half-finished ideas, worries you can't shake, things you're scared to forget. Get them all out fast, before the mental clutter takes over. Capture however it comes to you. Type it, or speak it out loud as a Spoken Thought. No structure required, no "right way" to do it. Just thought capture, fast. Then decide on your own time. Organize thoughts into a task, note or simply let them go completely with one swipe, because not every worry needs to become something. KEY FEATURES: • Instant thought capture for ideas, worries, and reminders • Capture from anywhere with the Action Button, Siri, or a Home Screen long-press • Swipe gestures to organize thoughts into tasks or notes • Spoken Thought for hands-free, voice-based capture • Batch processing sessions for inbox zero • Time-based task manager (Today, Tomorrow, This Week, Someday) • Notes repository for everything you want to keep • Activity insights into your thinking patterns • App lock with Face ID, or Touch ID • Dark and light themes • 100% private by default, all thoughts stay on your device (optional iCloud sync available) • Export all your thoughts or delete them anytime OPTIONAL PRO UPGRADE ThoughtsLeft works fully without upgrading. For deeper reflection, focus, and mental clarity, an optional PRO upgrade is available. Thought Timeline & History • View your complete thought history • See how thoughts become tasks, notes, or released items • Reflect on your thinking patterns over time Pattern Insights • Discover when your mind is loudest • Understand your overthinking habits Custom Scheduling • Set exact dates and times for tasks and get notified • Plan with more clarity and precision iCloud Sync • Keep your thoughts backed up and synced with iCloud • Your thoughts stay private, sync is always optional Apple Calendar Sync • Automatically sync your Thoughts Left tasks to your Apple Calendar • View your to-dos right alongside your daily events Premium Themes • Unlock 5 calming, nature-inspired themes • Personalise your space for reflection and focus Available as a one-time purchase or an annual subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Cerebro
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Your thoughts deserve better than a folder. Cerebro is an AI-powered thought journal that remembers so you don't have to. Open the app, write what's on your mind, and close it. That's it. Cerebro handles the rest: organizing your thoughts, extracting action items, and bringing forgotten ideas back at the right moment. How it works: - Open the app to a blank editor. Write freely in markdown. - AI silently processes every entry. No chatbot, no conversation. - Todos are extracted automatically from your natural writing. - A living memory document evolves with your thinking over time. - Push notifications resurface forgotten thoughts with context like "You mentioned wanting to learn Rust a week ago. Any progress?" Semantic search that actually works. Type "that creative project idea" and find an entry about building a camera app, even if those exact words never appeared. Cerebro understands meaning, not just keywords. Built for the forgetful. If you've tried journaling apps and abandoned them because organizing felt like a chore, Cerebro is different. There are no folders, no tags, no categories. You write. The AI organizes. Thoughts come back when they matter. Perfect for ADHD minds. Cerebro was built by someone who forgets things. The entire design removes friction: no onboarding, no setup, no maintenance. Just a blinking cursor ready for your next thought. What Cerebro is not: - Not a notes app. You don't organize anything. - Not a chatbot. The AI works silently behind the scenes. - Not a productivity system. It's a thought persistence layer. Start your free trial today. Your best ideas are worth remembering. Terms of Use: https://cerebro.henrypl.com/terms Privacy Policy: https://cerebro.henrypl.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: ThoughtsLeft at every 11 days against Cerebro's every 3 weeks. ThoughtsLeft also leads on iOS requirement (16.0 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
Both are free to download. ThoughtsLeft sells 2 in-app purchases, starting at $9.99 per year and Cerebro sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
ThoughtsLeft ships an update every 11 days, Cerebro every 3 weeks. The most recent releases landed on September 12, 2026 and September 10, 2026 respectively.
| Parameter | ThoughtsLeft | Cerebro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 11 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 46 MB | 87 MB |
| Age rating | 4+ | 12+ |
| Developer | Jayasrinivasan Varadharajan | Henry PL, LLC |
In-app purchases
ThoughtsLeft
- Thoughts Left PRO7 Days trial$9.991 Year
- Thoughts Left Pro$24.99
Cerebro
- Cerebro Pro3 Days trial$9.991 Month
- Cerebro Pro3 Days trial$79.991 Year









