4Quadrants vs ConcurReminder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
4Quadrants
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FourQuadrants is an efficiency tool built on the proven "Eisenhower Matrix" method. Stop drowning in endless to-do lists and instantly recognize what truly matters right now. Core Features: - Quadrant View: A clean, intuitive grid layout that makes prioritization effortless. - Smart Automation: Automatically determines urgency based on deadlines—no manual sorting needed. - Drag & Drop: Seamlessly move tasks between quadrants, and let the system intelligently adjust priorities. - Live Activity: Track your current focus directly from the Lock Screen. - Home Screen Widgets: View your most critical tasks without even opening the app. - Privacy First: Your data stays yours, leveraging iCloud and local storage. This is an early public beta. We welcome your feedback! Make every second count towards what's important.
ConcurReminder
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CREATE A COUNTDOWN - Set the date, repetition, reminders, and units shown for an event. - Choose the colors and type size for each countdown. - Export your events to a backup and import them later. CALENDAR AND WIDGET See events by year, month, or week. Keep your next countdown on the home screen. DATE AND DEADLINE CALCULATORS Add or subtract calendar days or workdays from a date, count the days between two dates, or calculate deadlines under FRCP 6(a). Save the result as a countdown event. NEARBY ON RECORD Find the nearest historical incident to where you are, see who it affected, and turn its upcoming anniversary into a yearly countdown.
Screenshots
Verdict
The clearest difference is update cadence: 4Quadrants at every 6 days against ConcurReminder's every 4 weeks. ConcurReminder's advantage is iOS requirement (15.0 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. Neither carries in-app purchases, so what you see is what you pay.
4Quadrants ships an update every 6 days, ConcurReminder every 4 weeks. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.
| Parameter | 4Quadrants | ConcurReminder |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 颢宸 唐 | Braveyo LLC |
In-app purchases
4Quadrants
No in-app purchases
ConcurReminder
No in-app purchases









