ByWhen: Deadline Reminders
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About this app
One reminder is easy to dismiss. A real deadline needs a plan.
ByWhen helps you finish important tasks before they turn into last-minute stress. Instead of relying on one alarm, ByWhen helps you create smart deadline reminders based on when something is due, how much time it needs, your daily rhythm, and the type of task you need to complete.
Add a task, set the deadline, estimate the effort, and let ByWhen help you find better moments to act.
ByWhen is useful for:
Work projects and personal deadlines
Assignments, exams, and study sessions
Calls, paperwork, and admin tasks
Errands and tasks away from home or work
Recurring daily, weekly, monthly, or yearly reminders
Important tasks that need more than a simple alarm
SMART DEADLINE REMINDERS
ByWhen looks beyond a due date. It considers how much work is left, how close the deadline is, and whether the task can realistically fit into available time.
A 10 minute call should not be treated like a 90 minute focus session. An errand may need a different window than a quick admin task. ByWhen helps organize reminders around the real shape of the task.
ADAPTIVE NUDGES
Dismissing one reminder should not make an important task disappear.
ByWhen keeps the task active and helps you return to it later. As the deadline gets closer, the app highlights whether a task is on track, needs time, is at risk, or past due.
DAILY RHYTHM
Set your sleep time, wake time, work hours, and workdays so reminders feel more realistic. ByWhen is designed to avoid the parts of your day when a nudge would be unhelpful.
TASK TYPES THAT MATTER
Different tasks need different kinds of time. ByWhen supports task types such as deep work, admin, calls, study, errands, and tasks away from home or work.
That means quick tasks can fit into shorter openings, while bigger tasks can be planned for better focused windows.
RECURRING TASKS
Create repeating reminders for daily, weekly, monthly, yearly, or selected days of the week. When you complete a recurring task, ByWhen moves the next cycle forward so you are not reminded again for the period you already finished.
PREMIUM PLANNING
ByWhen Premium unlocks the full smart deadline planning experience, including unlimited smart reminders, adaptive nudges, task-specific reminder styles, recurring tasks, deadline risk planning, and daily rhythm personalization.
Subscriptions are managed through Google Play. Lifetime Premium may also be available as a one-time purchase.
PRIVATE BY DESIGN
ByWhen is built with privacy in mind. Your tasks, reminders, rhythm settings, and deadline plans stay on your device unless you choose to export or back them up yourself.
No account is required to start.
Download ByWhen and make deadlines easier to trust
ByWhen helps you finish important tasks before they turn into last-minute stress. Instead of relying on one alarm, ByWhen helps you create smart deadline reminders based on when something is due, how much time it needs, your daily rhythm, and the type of task you need to complete.
Add a task, set the deadline, estimate the effort, and let ByWhen help you find better moments to act.
ByWhen is useful for:
Work projects and personal deadlines
Assignments, exams, and study sessions
Calls, paperwork, and admin tasks
Errands and tasks away from home or work
Recurring daily, weekly, monthly, or yearly reminders
Important tasks that need more than a simple alarm
SMART DEADLINE REMINDERS
ByWhen looks beyond a due date. It considers how much work is left, how close the deadline is, and whether the task can realistically fit into available time.
A 10 minute call should not be treated like a 90 minute focus session. An errand may need a different window than a quick admin task. ByWhen helps organize reminders around the real shape of the task.
ADAPTIVE NUDGES
Dismissing one reminder should not make an important task disappear.
ByWhen keeps the task active and helps you return to it later. As the deadline gets closer, the app highlights whether a task is on track, needs time, is at risk, or past due.
DAILY RHYTHM
Set your sleep time, wake time, work hours, and workdays so reminders feel more realistic. ByWhen is designed to avoid the parts of your day when a nudge would be unhelpful.
TASK TYPES THAT MATTER
Different tasks need different kinds of time. ByWhen supports task types such as deep work, admin, calls, study, errands, and tasks away from home or work.
That means quick tasks can fit into shorter openings, while bigger tasks can be planned for better focused windows.
RECURRING TASKS
Create repeating reminders for daily, weekly, monthly, yearly, or selected days of the week. When you complete a recurring task, ByWhen moves the next cycle forward so you are not reminded again for the period you already finished.
PREMIUM PLANNING
ByWhen Premium unlocks the full smart deadline planning experience, including unlimited smart reminders, adaptive nudges, task-specific reminder styles, recurring tasks, deadline risk planning, and daily rhythm personalization.
Subscriptions are managed through Google Play. Lifetime Premium may also be available as a one-time purchase.
PRIVATE BY DESIGN
ByWhen is built with privacy in mind. Your tasks, reminders, rhythm settings, and deadline plans stay on your device unless you choose to export or back them up yourself.
No account is required to start.
Download ByWhen and make deadlines easier to trust
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No data collected
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What’s new
Bug fixes and performance improvements.
App support
About the developer
NIONLITE LLC
support@nionlite.com
3671 Westmount Pkwy
Ellicott City, MD 21042-1881
United States
+1 667-200-6124