Flex Log vs TriLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flex Log
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Welcome to Flex Log, the app for anyone who's ever thought, "If only I could track my productivity hacks... with another productivity hack." It's like your standard health and productivity app, but without the rigid frameworks and one-size-fits-all approach. It's adaptable to fit the way you track. Why Flex Log? Because who doesn't love tracking their life with an app? Flex Log brings a bit of order to your chaotic world, with the added bonus of making you feel like a productivity guru. It's the app for people who love data, but also value simplicity and ease of use in their everyday life. For the Aspiring Life Optimizers: You're the kind of person who tries to squeeze productivity out of every second (while listening to podcasts you swear you'll apply to your life someday). Flex Log is here to help you track, well, whatever you think is worth tracking. No judgments here! Customize Without the Complexity: Our app is more adaptable than your yoga instructor. Want to track your caffeine intake or the number of times you actually remember to water your plants? Flex Log has got your back. Built with the power-user in mind, so you can dive deep into customization, creating a setup that's as complex and unique as your goals. Join Our Band of Happy Trackers: Download Flex Log and become part of a community that loves to optimize their lives, but also knows how to laugh at the little absurdities. Remember, life's a journey – might as well have an app that makes the ride more interesting. Flex Log: Your Life, Tracked Your Way (With a Smile). Features: - Quick data entry - Task tracking - User defined activities with custom icons - Point in time as well as time range tracking - Custom fields so you can track anything in a structured format - Data never leaves your phone - Customized views Coming soon: - Recurring tasks based on calendar or last completion date - Reminder notifications - Voice entry with siri and google assistant - Data sync to notion or google sheets - Goals and charts. Visualize what's most important.
TriLog
This app helps you track your mood, energy levels, activities, sleep, and habits on a single, color-coded timeline. It offers quick logging, detailed charts, and customizable features to understand your daily patterns. Optional iCloud backup ensures your data stays private on your device.
- Mood, energy, and activity timeline
- Daily habit tracking with streaks
- Sleep quality and duration logging
- Menstrual cycle tracking
- Workout logging
- Screen time analysis
- Siri Shortcuts for hands-free logging
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TriLog is The Personal Data Logger. Log what no sensor can see. Line it up with everything else. Apps and devices track your heart rate, steps, and sleep stages. They can't track how you felt at 2pm, whether focus crashed after lunch, or what symptom showed up before the weather changed. TriLog is a fast log for subjective experience — mood, energy, focus, symptoms, observations — anything only you can observe. Then it puts that on the same timeline as the rest of your life: activities, notes, weather, pollen, barometric pressure, Apple Health metrics, and more. Not scattered across apps and memory — one clock, one week on one screen, so you can see what actually lines up. Capture in seconds. Discover what predicts your best days. FREE — LOG WITHOUT LIMITS • Mood and energy throughout the day • Activities — work, sleep, exercise, leisure, anything • Sleep quality, duration, and wakefulness (Day Launch) • Meals and short observations (including calorie notes) • Health and symptom observations (freeform notes) • Journal entries and Day End reflections • Menstrual cycle notes • Habits — daily checkoffs, no streak pressure • Timeline, Metrics Grid, Charts, and note search A fast log for what you observed, when — and what else was going on at the same time. ALIGN EVERYTHING ON ONE TIMELINE Weather, pollen, air quality, UV, and barometric pressure sit alongside your entries. Apple Health metrics — sleep stages, resting heart rate, HRV, weight, steps — share the same chart and Metrics Grid. Built for correlation: did this week feel worse because of sleep, pressure, screen time, or something you logged Tuesday? THE DATA NOTHING ELSE CAPTURES Sensors capture what your body does. Mood journals capture how you felt. Neither lines them up. TriLog does both — a continuous record from the inside, on the same clock as everything else. Why do I have good days and bad days? What predicts my energy crashes? What actually improves my focus? What's behind a symptom no test has explained? These questions are unreachable by sensors and unreliable from memory. They become answerable when you have a continuous record from the inside. Built for people who already try to track energy, symptoms, or focus — and need one timeline instead of Notes, spreadsheets, and mood-only journals. DESIGNED FOR SPEED Capture has to be effortless or it won't survive a hard week. TriLog was built around that constraint. Three taps to log mood, energy, and what you're doing. No forms. No typing. No menus. Get back to your day. VISUALIZE YOUR DATA • Timeline: your entire day on one screen • Metrics Grid: weeks of energy, mood, sleep, steps, and more side by side • Habits Grid: consistency at a glance • Charts: activity breakdowns and long-term trends • TriLog Viewer: free Mac and Windows companion for years of data on one screen PRO — 30-DAY FREE TRIAL, THEN $59.99/YEAR Start with a 30-day free trial. All Pro features unlock immediately — cancel anytime during the trial and pay nothing. Also available monthly at $7.99/month. Pro adds the power layer for pattern discovery: • Trackers — structured logging for anything that varies (symptoms, supplements, medications, focus, pain) with a dedicated grid • Apple Health integration (sleep stages, resting heart rate, HRV, weight, steps, dietary calories) • Quick Track one-tap favorites • Polling reminders • Hour-by-hour Screen Time alongside mood and energy • Day View: sun clock, moon phase, and seasonal position • Pomodoro focus timer • Siri Shortcuts for voice logging • Entry locations • Custom activities, colors, and icons • Workouts (weights, cardio, calisthenics) PRIVATE BY DEFAULT Your data stays on your device. No account required. No third-party servers. No ads. No data mining. Optional iCloud backup if you want it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Flex Log at none against TriLog's 2. Flex Log also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (12.4 vs 16.0). On price, ads 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. TriLog sells 2 in-app purchases, starting at $7.99 per month. Flex Log asks for nothing beyond the download.
Flex Log ships an update every 5 days, TriLog every 3 weeks. The most recent releases landed on September 15, 2026 and July 10, 2026 respectively.
| Parameter | Flex Log | TriLog |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.4 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 54 MB |
| Age rating | 17+ | 4+ |
| Developer | Aaron Larner | Joseph Orr |
In-app purchases
Flex Log
No in-app purchases
TriLog
- TriLog Pro1 Month trial$7.991 Month
- TriLog Pro1 Month trial$59.991 Year









