Shtab vs C2 Simon Task
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shtab
This app offers a comprehensive suite of tools for task management and project organization. It features Kanban boards, calendars, and time tracking to help individuals and teams streamline their workflow and boost productivity.
- Kanban boards for workflow visualization
- Calendar and planner for deadlines
- Task lists with subtasks
- Team collaboration features
- Time tracking
- Seamless mobile and web sync
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Shtab is a task manager and project management app for teams, freelancers, and personal productivity. Kanban boards, lists, calendar, time tracking, and team collaboration — all in one place. Meet the completely redesigned Shtab app! We rebuilt it from the ground up so managing work from your phone feels as smooth as on desktop. WHAT'S NEW IN THIS RELEASE • Redesigned home screen — your priorities, right when you open the app • Rebuilt kanban board — fast, fluid, with effortless drag and drop • Refreshed task list — clearer filters, smarter sorting, better search • New calendar view — plan your week or month at a glance • Redesigned task cards — every detail where you expect it • Improved comments — discuss work without leaving the task • Smarter notifications — only what matters, nothing more WHAT SHTAB DOES • Kanban boards to visualize your workflow • Calendar and planner to stay on top of deadlines • Task lists with subtasks and checklists • Team collaboration: assignees, comments, @mentions • Smart notifications for updates and due dates • Tags, labels, priorities, and custom fields • Projects and workspaces for different teams • Seamless sync between mobile and web WHO IT'S FOR • Teams and agencies — manage projects and clients • Startups — work in sprints, move fast • Freelancers — track orders, hours, and deliverables • Personal productivity — tasks, goals, habits, daily planning WHY SHTAB We build tools that stay out of your way. No cluttered interfaces, no feature overload — just what you need to move work forward. Simple enough to start today, powerful enough to grow with your team. Free plan available for small teams and personal use. Download now and see how much better mobile project management can be. We'd love to hear what you think — your feedback shapes what we build next.
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: Shtab at Free against C2 Simon Task's $3.99. Shtab also leads on update cadence (every 3 weeks vs every 11 months). C2 Simon Task's advantage is iOS requirement (15.6 vs 17.6). On 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
Shtab is free to download; C2 Simon Task costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Shtab ships an update every 3 weeks, C2 Simon Task every 11 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | Shtab | C2 Simon Task |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 39.1% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 62 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Shtab inc. | Yasuyoshi Ota |
In-app purchases
Shtab
No in-app purchases
C2 Simon Task
No in-app purchases









