Comparison

Supernotes vs C2 Simon Task

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

Head to head
About

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.

Highlights
  • Shareable Markdown notecards
  • AI writing assistance
  • Bi-directional card linking
  • 2D/3D graph visualization
  • Spaced repetition flashcards
  • Real-time collaboration
  • Offline support
Features
Read full description

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

About

C2 Simon Task

Features
Read full description

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

Supernotes4 screens
C2 Simon Task4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Supernotes versus C2 Simon Task: the parameters behind the verdict, then further details
ParameterSupernotesC2 Simon Task
PriceFree — better$3.99
Rating4.8 (122 ratings) — better—
Positive reviews90.6% of reviews—
Number of ratings122 — better—
Update frequencyMonthly — betterEvery 11 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size106 MB1 MB
Age rating4+4+
DeveloperSupernotesYasuyoshi 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
Show 1 more
  • Ability to create groups or collections of notes

C2 Simon Task

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Supernotes

Subscriptions3
  • Supernotes Unlimited (1 Month)$11.001 Month
  • Supernotes Unlimited (Promo)7 Days trial$69.001 Year
  • Supernotes Unlimited (1 Year)$99.001 Year
None

C2 Simon Task

No in-app purchases

Questions

Is Supernotes free?
Supernotes is free to download, with in-app purchases available.
Is C2 Simon Task free?
C2 Simon Task costs $3.99, with no in-app purchases.
Do Supernotes or C2 Simon Task have ads?
Neither Supernotes nor C2 Simon Task shows ads.
Which is updated more often, Supernotes or C2 Simon Task?
Supernotes ships an update monthly, and C2 Simon Task every 11 months. Most recently, Supernotes was updated on September 30, 2026 and C2 Simon Task on September 24, 2026.

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