Use cases Diary studies

Video diary studies that people actually finish

Run diary studies where tasks open day by day, in each participant's time zone, with gentle reminders. Collect video, photo, voice and text entries over days or weeks and see how experiences change.

A young man records a short video diary on his phone on a sunny balcony

A diary study is a qualitative method where participants report on their experiences regularly over a period of time, usually days or weeks. Because people record close to the moment, a diary study captures what they did and felt, not what they remember afterwards. On Zolensa, each entry can be a video, photos, a voice note, text or a few quick questions, and the research team sees it as soon as it is sent.

When to use a diary study

Choose a diary study when the answer depends on time:

  • Habits and routines that repeat, like meals, workouts, commuting or screen time.
  • Experiences that unfold, like a new product over two weeks, a subscription's first month or recovering from a cold.
  • Moments that are easy to forget, like small purchases, irritations or snacks.
  • Comparing days, such as weekdays and weekends, or before and after a change.

How a study runs on Zolensa

  1. Plan the days. Put each task on a study day, from day 1 to day 90. Set when it opens, in the participant's local time, and how many hours it stays open.
  2. Add "every time" tasks. Mark a task as repeatable for events that happen at random, such as "every time you open the fridge for a snack".
  3. Invite and start. Day 1 is the day each participant signs the consent form, so people who join late still get every task in order.
  4. Remind, once. When a task opens, the participant gets one reminder by email, WhatsApp or text message. Reminders never go out at night, and participants can switch them off.
  5. Follow progress. The dashboard shows entries per day and who has missed tasks. Write to someone who has gone quiet, or ask a follow-up question about one entry.
  6. Read across time. Filter the responses feed by day, task, group or participant. Let AI find themes across all entries, with the quotes behind each one.

Zolensa features that help

  • The Today screen. Participants see what is open today, what is done and what comes next, in their own time zone.
  • Uploads that resume. A video keeps sending after a lost connection, so entries from a train or a basement still arrive.
  • Mixed answer types. A video for the story, a rating for the mood, a choice for what they used. Rating scales include 1 to 5, 1 to 7, 1 to 10 and 0 to 10.
  • Questions that depend on answers. Show "What went wrong?" only to people who picked "It did not work".
  • Thank-you message. Participants see your own thank-you note when they send their last task.
  • Transcripts and search. Search every entry by word or by meaning, across days.

Plan for these

  • Fewer, better tasks. One short task a day beats three long ones. People stay with a study when it fits into their day.
  • Same question, same time. If you want to compare days, ask the same core question at the same time each day.
  • Use the first entry as onboarding. A light first task, such as "Introduce yourself in 30 seconds", teaches people how recording works.
  • Plan for missing days. Decide how long each task stays open. 24 hours is common; a weekend task may stay open longer.
  • Close the loop. A follow-up question on day three, about something said on day one, shows people their answers are read.

Frequently asked questions

How long should a diary study be?

Most diary studies run for one to four weeks. One week suits a routine. Two to four weeks suit products and services that change with use. Keep the daily effort small for longer studies.

How do you keep participants engaged in a diary study?

Keep each task short and clear, remind people once when a task opens, and reply to what they send. Follow-up questions and a visible thank-you at the end both help people feel heard.

Can a diary entry be a video?

Yes. On Zolensa an entry can hold videos of up to 10 minutes, photos, voice notes, text, choices, ratings, grids and journey maps, in any mix.

What happens if a participant misses a day?

A task stays open for the hours you set, from 1 to 168. If it closes before the participant sends it, it counts as missed and shows on the dashboard. Later tasks still open as planned.

Can participants in different time zones take part in the same study?

Yes. Tasks open in each participant's own local time, so "8 pm on day 3" means 8 pm wherever they are.

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