When2Do vs Big Number Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
When2Do
This app helps you plan your activities by scheduling them based on duration, deadline, and your work schedule. It tracks task progress and can export data to CSV. View your overall schedule in a GANTT style.
- Automated activity scheduling
- Task duration and deadline input
- Work schedule and holiday consideration
- Task execution status tracking
- CSV data export
- GANTT style schedule view
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When2Do pianifica le vostre attività. When2Do plans your activities. Describe the activity by giving a name, duration, and deadline. When2Do will schedule it as soon as possible, taking into account other activities, daily work schedule, weekdays and holidays. When2Do will provide you with the scheduled date and time and indicate whether or not it meets the deadline. Whenever you start working on a task you can set the execution status and change it when you stop. Using this information, When2Do can produce a csv file for use in other applications. Tasks can be grouped into Objectives and the overall schedule can be seen in GANTT style.
Big Number Calendar
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Large font Vietnamese Calendar Calendars with large font numbers is a powerful and easy-to-use calendar app that helps you manage your time, tasks, and daily life effectively. With its clear large number calendar interface, you can easily view dates, create schedules, set reminders, and manage important events. Whether you are planning a personal schedule or tracking work, a large-print calendar will help you get things done according to plan. Key Features - Provides information on Vietnamese public holidays and anniversaries - Large and easy-to-read digital calendar interface - Monthly and yearly calendar views - Create events, schedules, and notes - Set alarms and important notifications - Add images to events and schedules - Customize colors and event markers - Lunar calendar support - Seasonal support - Multilingual support - Works offline, no internet connection required Security and Privacy Large digital calendars are designed with privacy as the top priority. - Data is primarily stored on the user's device. - No login is required. - It is not a cloud-based service. - Users have complete control over their data. Organize Your Life More Conveniently Practice the following with a large numeric calendar: - Plan your daily schedule - Manage appointments and schedules - Set important reminders - Write personal notes - Record Vietnamese holidays and special events
Screenshots
Verdict
The clearest difference is ads: When2Do at none against Big Number Calendar's shown. On price, update cadence, 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.
When2Do ships an update every 10 days, Big Number Calendar every 9 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.
| Parameter | When2Do | Big Number Calendar |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 days | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.1 | 15.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 58 MB |
| Age rating | 12+ | 4+ |
| Developer | Danilo Bottini | daehyun sung |
In-app purchases
When2Do
No in-app purchases
Big Number Calendar
No in-app purchases
