Supported Features
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Dark Interface
TriLog
The Personal Data Logger.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Log energy, mood, symptoms, meds, and caffeine as they happen — then see what lines up. New in 4.0: Forms, Trials, and a printable report for your doctor.
TriLog is the personal data logger.
Capture mood, energy, focus, and symptoms in seconds — then see how they line up with sleep, weather, habits, and everything else on one timeline.
Most trackers ask once a day how you felt, then average it. But the crash hits at 2pm. The migraine lasts four hours. The good morning follows a bad night. TriLog records moments, not daily summaries: every entry has a time, and a whole week sits on one screen, hour by hour.
Built for people who already track seriously — energy you have to budget, symptoms nobody can explain, experiments you're running on yourself — and who have outgrown mood journals, spreadsheets, and scattered notes.
NEW IN 4.0
• Notes view — every note, tracker entry, and dose from the week in one place. Filter it, or flip to a two-week time-of-day chart.
• Forms — log several fields as one entry: a pain episode, a bowel event, a restaurant visit. Start from a template or build your own.
• Trials — run an experiment (magnesium, no afternoon coffee), mark the days you missed, then end it Adopted, Dropped, or Inconclusive.
• Episode trackers — a headache with a start, a severity, and a stop, drawn as a band for as long as it lasted.
• Provider Report — a printable PDF of your sleep, energy, trackers, and forms to bring to an appointment.
• Interactive dashboards — export the week chart or your metrics as a web page and explore months on a big screen.
• Trio view — a week chart with the three columns you choose.
CAPTURE IN SECONDS
Capture has to be effortless or it won't survive a hard week.
• One tap each for mood, energy, and activity
• Quick Track — leave it open and log with single taps
• Type a line — "t hd 3", "int coffee" — with your own shorthand
• Siri — "energy 3", "mood sad"
• Long-press any chart to log at that time; drag a marker to re-time it
EVERYTHING ON ONE CLOCK
Your entries sit alongside weather, barometric pressure, pollen, air quality, and daylight; Apple Health sleep stages, HRV, resting heart rate, steps, and workouts; and hour-by-hour Screen Time. Did this week feel worse because of sleep, pressure, screen time, or something you took on Tuesday?
WHAT YOU CAN LOG
• Mood, energy, and activity throughout the day
• Notes — meals with calories, health, journal, cycle
• Trackers — ratings, numbers, choices, episodes, traffic lights, titled ratings
• Intake — coffee, supplements, medications, with caffeine totaled in mg
• Day Launch and Day End — sleep, goals, reflections, routines
• Habits — daily checkmarks, no streaks, no scores
SEE WHAT LINES UP
• Week chart — seven days, twenty-four hours, one screen
• Day view, Notes view, and Trio view
• Journal — your journal notes and Day End reflections, collected day by day with photos
• Metrics grid — sleep, energy, weather, steps, trackers, and trials by day
• Analysis — patterns, day ratings, correlations, intake and cycles against your ratings
• Free, open-source Mac and Windows viewer
PRIVATE BY DEFAULT
No account. No third-party servers. No ads. Your log lives on your device, with optional iCloud backup. Export everything, anytime.
ONE PRODUCT, NO TIERS
Try everything free for 30 days. Then $59.99/year or $7.99/month to keep logging. Cancel during the trial and pay nothing. If you stop subscribing, the app becomes read-only — everything you logged stays browsable and exportable.
Demo Mode (Menu → About) lets you explore with sample data first.
A LOGBOOK, NOT A DOCTOR
TriLog records and displays. It does not diagnose, treat, or give medical advice. If you find a pattern that matters, bring it to a qualified professional.
Questions or ideas? I read every email: support@trilog.app
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Minor fixes and style improvements.
The developer, Joseph Orr, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Joseph Orr
- Size
- 56.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- TriLog Pro $59.99
- TriLog Pro $7.99
- Copyright
- © 2026 Joseph Orr
