Supernotes vs C2 Simon Task
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Supernotes
Organize your thoughts and ideas with a fast, lightweight note-taking app. Create visually rich notecards with Markdown and LaTeX support, enhanced by AI writing assistance. Build interconnected knowledge networks and share them seamlessly.
- Shareable Markdown notecards
- AI writing assistance
- Bi-directional card linking
- 2D/3D graph visualization
- Spaced repetition flashcards
- Real-time collaboration
- Offline support
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Free your thoughts with Supernotes, the fast, lightweight notes app. Write beautiful notecards that are perfect for personal, work, and educational use – all your ideas, meeting, and lecture notes at your fingertips. CREATE NOTECARDS THAT POP Tired of scrolling up and down long notes? Break down your ideas with Supernotes notecards – keeping you organized. Add colors, tasks, bold, italics, lists, equations, images, code snippets, and more. Want more? Connect a bluetooth keyboard, and harness the full extent of our Markdown and LaTeX editor. POWER UP WITH AI Try our thoughtful approach to AI. We call them Superpowers that help automate arduous tasks, such as tagging your cards, as well as train you to become a better writer, highlighting grammatical errors and offering rewording suggestions. ORGANIZE YOUR KNOWLEDGE Categorize your notecards using tags, reference popular cards with card links, and pop related notecards inside a parent card to build a network of interconnected knowledge. Multi-select, and edit notes in bulk, in the Table layout. Visualize your notes in both 2D and 3D graph layouts, helping you discover existing and new connections. Build your dream Zettelkasten system. REMEMBER WHERE YOU WROTE THEM Only on Supernotes, view all your notecards on a geographic Map. Opt-in to location sharing to automatically assign locations to notes when you create them to see where you had the most inspiring ideas or the most meetings! Or manually assign locations for trips, restaurant recommendations and more. BUILT-IN SPACED REPETITION Jump into Flashcard layout to instantly learn any of your notecards. Using our FSRS algorithm, cram your notes before an exam or learn them at a relaxed pace. We will show which notecards are due at the right times so you can learn as efficiently as possible. SHARE WITH FRIENDS Stop taking screenshots of notes – just share a notecard to generate a secure link. That note will be instantly accessible to anyone (even if they don't have Supernotes)! Add friends, classmates, or teammates on Supernotes to instantly share new notecards with each other, and see each other's cursors editing in real time. ON ALL YOUR DEVICES, OFFLINE OR ONLINE Pick up where you left off with our iPhone, iPad, and Mac apps. Keep taking notes wherever you are, even if your connection drops, with seamless offline support. FEATURE COMPLETE - Universal Search & Filters - Markdown / LaTeX Editor - Bi-directional Card Links - Calendar Heatmap - Assign Dates to Notes - Four Day & Night Themes - Share to Supernotes Extension - Export to Markdown, JSON & PNG - Keyboard Shortcuts - 24/7 Customer Support FREE FOR LIGHTWEIGHT USE Discover everything Supernotes has to offer with our generous free Starter plan; explore all the features and earn 100s cards. Or upgrade to the Unlimited plan for unlimited cards, feature previews, and more. Prices may differ depending on your location, and subscriptions will be charged to your App Store payment method. Your subscription will automatically renew and you may cancel at any time. Privacy Policy: https://supernotes.app/privacy Terms & Conditions: https://supernotes.app/terms
C2 Simon Task
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The iOS app "C2 Simon Task" is intended for those who are interested in psychology, those who are learning psychology, and those who are researching it. * The effect of the Simon task appears as the difference in the time to recognize the direction indicated by the color in the following two cases, for example. ・ When a figure of the color indicating the left is displayed on the left side (compatible) ・ When a figure of the color indicating the right is displayed on the left side (incompatible) The purpose of this app is to be able to see the effect of the Simon task numerically. The iOS app "C2 Simon Task" records the response time of a simon task (task conflict) in milliseconds. Response time is the time from when the task is displayed to when the answer button is touched (touchdown). The recorded data can be output to a CSV file and read into a spreadsheet application such as Excel. You can change the trial interval, the left and right colors, the shape of the shape, the size of the shape, the brightness of the background, and so on. [details] https://app.brain-workout.org/simontask-e/
Screenshots
Verdict
The clearest difference is price: Supernotes at Free against C2 Simon Task's $3.99. Supernotes also leads on update cadence (monthly vs every 11 months). C2 Simon Task's advantage is in-app purchases (none vs 3). On ads, device support 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
Supernotes is free to download; C2 Simon Task costs $3.99 up front. Supernotes sells 3 in-app purchases, starting at $11.00 per month. C2 Simon Task asks for nothing beyond the download.
Supernotes ships an update monthly, C2 Simon Task every 11 months. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.
| Parameter | Supernotes | C2 Simon Task |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.8 (122 ratings) — better | — |
| Positive reviews | 90.6% of reviews | — |
| Number of ratings | 122 — better | — |
| Update frequency | Monthly — better | Every 11 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 106 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Supernotes | Yasuyoshi Ota |
Bugs and requests
Supernotes
Reported bugs
2 issues- Blank white screen on app/web browser
- App doesn't work on iOS 15.4.1
Requested features
6 requests- iOS widgets for home and lock screens
- Alert for note space limit and prompt to edit/continue as journal entry
- Better image and video viewing
- Control center button
- Split screen functionality
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- Ability to create groups or collections of notes
C2 Simon Task
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Supernotes
- Supernotes Unlimited (1 Month)$11.001 Month
- Supernotes Unlimited (Promo)7 Days trial$69.001 Year
- Supernotes Unlimited (1 Year)$99.001 Year
C2 Simon Task
No in-app purchases









