Mindwtr vs Thought Spark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mindwtr
A privacy-focused, local-first task manager that helps you organize your life using the Getting Things Done methodology. It offers zero friction capture, project organization, visual Kanban boards, and a guided weekly review process, all while keeping your data securely on your device.
- Zero friction task capture
- GTD workflow integration
- Hierarchical project organization
- Visual Kanban boards
- Guided weekly review
- Offline-first functionality
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Your head keeps reminding you of things at the worst times. Mindwtr gives them a safe home. Mindwtr (pronounced "mind water") is a free, open-source to-do app built on the Getting Things Done (GTD) method. Write down every task and idea the moment it appears, sort it in seconds, and see only what you can do right now. No account, no subscription, and your data stays on your device. HOW IT WORKS 1. Dump it. A task, an idea, a worry: type it or speak it, and it lands in your Inbox. 2. Sort it. A short guided pass: do it now, schedule it, hand it off, or shelve it for someday. 3. Do it. The Focus view shows only what you can act on right now, nothing else. 4. Reset weekly. A guided review catches loose ends, so the list stays trustworthy and your head stays clear. New to GTD? The idea is simple: your head is for having ideas, not for holding them. Mindwtr walks you through every step. WHY MINDWTR - Works completely offline. No account required. - Your tasks stay on your device. Sync is optional and you choose where: Dropbox, a folder you control, WebDAV, your own server, or iCloud on Apple devices. - The full GTD method built in: Inbox, Next, Waiting For, Someday/Maybe, Projects, Areas, Contexts, and reviews. - Capture from anywhere: quick add, widgets, sharing from other apps, or voice. - Plan your way: list, calendar, and kanban board views. - Reminders, repeating tasks, checklists, Markdown notes, and attachments. - Import from Todoist, TickTick, OmniFocus, and more. - Free and open source. No ads or lock-in. SIMPLE BY DEFAULT, POWERFUL WHEN YOU NEED IT Fewer fields, fewer knobs, no clutter. Advanced tools, like the kanban board, automation, and an optional AI assistant that uses your own AI account, stay out of sight until you want them. Mindwtr means "mind like water": the calm you get when nothing is rattling around in your head.
Thought Spark
Quickly capture fleeting thoughts through voice or text, then use AI to refine them into actionable plans. Explore your ideas further with web research and integrate them into your daily workflow with reminders and calendar events.
- Instant voice/text idea capture
- AI-guided idea refinement
- Automated web research
- Actionable next steps
- Reminders and calendar integration
- On-device storage
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Every good idea starts as a spark — and most of them vanish before you do anything with them. Thought Spark catches them the instant they strike. Capture in seconds. Tap once and talk, or type. Thought Spark transcribes and titles your idea automatically. Sharpen it. A short, AI-guided interview asks the right questions to turn a vague notion into something clear — tuned to how you think (founder, writer, researcher, designer, PM). Research it. Send your idea to the web: Thought Spark scans for prior art, key context, risks, and directions worth exploring, with sources. Act on it. Turn an idea into reminders, a calendar work-block, and concrete next steps — so it actually moves. Your ideas stay on your device. Capture and basic features are free; Pro unlocks unlimited refining and deep web research. Start with a 7-day free trial of Pro — unlimited refining and deep web research. Pro is an auto-renewing subscription ($7.99/month or $49.99/year). Payment is charged to your Apple ID; it renews unless cancelled at least 24 hours before the period ends; manage or cancel anytime in your Apple ID settings. Terms of Use (EULA): https://thoughtsparkapp.com/terms.html Privacy Policy: https://thoughtsparkapp.com/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Mindwtr at none against Thought Spark's 2. Mindwtr also leads on update cadence (weekly vs fortnightly) and ratings volume (12 vs 3). Thought Spark's advantage is rating (5.0 vs 4.7) and review sentiment (100% vs 90%). On price, ads and iOS requirement 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. Thought Spark sells 2 in-app purchases, starting at $7.99 per month. Mindwtr asks for nothing beyond the download.
Thought Spark holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 12 and 3 respectively. Written reviews point the same way: 90% of Mindwtr's written reviews are positive against 100% of Thought Spark's.
Mindwtr ships an update weekly, Thought Spark fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Mindwtr | Thought Spark |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (12 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 90.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 12 — better | 3 |
| Update frequency | Weekly — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 70 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Dongda Li | Edventure Design LLC |
Customer experience
Mindwtr
Thought Spark
In-app purchases
Mindwtr
No in-app purchases
Thought Spark
- Thought Spark Pro (Monthly)7 Days trial$7.991 Month
- Thought Spark Pro (Yearly)$49.991 Year









