Comparison
Daylio and Mendly are both daily mood trackers for iPhone and Android, and both look at how what you do lines up with how you feel. Daylio is a full mood journal. Mendly is a one-minute check-in focused on which habits go with your better days, with a second side for therapists whose clients check in between sessions.
For yourself
For your practice
Start free with 2 clientsDaylio is a mood and activity journal. You tap a mood and your activities, and you can add notes, photos and voice memos. It has goals, a Year in Pixels view and a lot of customization, and it keeps your entries on your phone with no account.
Mendly asks for a score for your day, a few short answers and an optional note. Once your own check-ins support a pattern, it tells you how often days with a habit were good days, compared with days without it. If your therapist uses Mendly, they can set up a check-in for you and see it before each session.
Mendly is a short daily check-in with two ways to use it. The two are kept separate: a personal account is never visible to a therapist.
| Mendly | Daylio | |
|---|---|---|
| Platforms | iPhone and Android | iPhone, iPad and Android |
| A daily entry | A score for the day, a few short questions you picked, and an optional note | A mood and your activities, with optional notes, photos and voice memos |
| Habits and mood | How often days with something were good days, against days without it. A pattern appears only after it passes a statistical test | An "Influence on Mood" statistic for each activity, with a low, medium or high confidence rating |
| Free version | Daily check-in, history, your usual day and your strongest pattern | Yes, with Premium adding advanced stats, automatic backups, PDF export and more |
| Optional upgrade | Mendly Plus: every pattern in detail, Apple Health or Health Connect, recaps, your own questions and a one-page summary for a therapist or doctor | Daylio Premium, with a 7-day free trial |
| Photos, voice memos and goals | No | Yes |
| Where entries are kept | In your Mendly account, encrypted in transit and at rest | On your phone, with no account. Optional backup to your own Google Drive or iCloud |
| Export | A spreadsheet of your check-ins, notes and health figures | CSV, and PDF with Premium |
| For therapists | A dashboard where therapists set up check-ins and see each client’s week | Entries can be shared by exporting a PDF or CSV |
Checked October 18, 2026. See the sources.
Daylio is a personal journal. Its help pages describe sharing your entries by exporting a PDF or CSV, which you could bring to a session.
Mendly has a side built for this. A therapist who uses Mendly picks the questions you answer each day and sends you an invite. You check in on your phone, and your answers, notes and mood go to their dashboard, so they can see your week before the session. That client account is separate from a personal Mendly account.
If you use the personal app on your own, Mendly Plus can make a one-page summary of your check-ins to bring to a therapist or doctor.
No. A personal account is never visible to a therapist. If your therapist uses Mendly, they invite you to a separate client account for the check-ins they set up.
No. Mendly is a general wellness app. It does not diagnose or treat anything, and two things happening on the same days may have nothing to do with each other. If you are in crisis, call or text 988 in the United States.
Checked October 18, 2026.
Daylio details were checked on October 18, 2026 against Daylio’s website, help pages and privacy policy and its App Store and Google Play listings, and may have changed since. Daylio is a trademark of its owner. Mendly is not affiliated with, sponsored by or endorsed by Daylio or its developers, Habitics s.r.o. and Relaxio s.r.o.
A therapist? Start free with 2 clients