Flex Log vs Truly Simple Symptom Log
Price, ratings, monetisation and update history for both apps, side by side β 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 β 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.
Truly Simple Symptom Log
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Truly Simple Symptom Log is built around a single conviction: health tracking should take seconds, not minutes. Most symptom trackers are overbuilt and cluttered with complicated graphs, gamification, mandatory onboarding, and subscriptions that make the act of recording how you feel a chore. This app strips all of that away. It features a calm, minimal, one-screen logging interface that feels closer to a personal journal than a medical tool. Itβs perfect for people with chronic conditions, people exploring cause-and-effect with their health, or anyone who just wants a friction-free way to log their mood and symptoms and then move on with their day. There's an in-app purchase that allows you to lock the app and export your data, but all core features are available in the free version and can be used for free as long as you like. Features: β’ One-screen logging: Record your mood, symptoms, potential causes, and notes on a single page. No tabs or multi-step wizards. β’ Heatmap calendar: A color-coded monthly data view gives you an instant visual summary of how you've been feeling over time, so patterns become obvious at a glance. β’ Accessible by design: Enlarged, comfortable touch targets prevent mis-taps when you're not feeling well. Fully optimized for VoiceOver screen readers and scalable dynamic text for low vision. β’ iCloud Sync: Logs sync silently and automatically across your Mac, iPhone, and iPad. Status indicators let you know your data is secure at a glance. β’ Free core features: All core logging is completely free. A single one-time, lifetime purchase unlocks optional data exports and a biometric privacy lock.
Screenshots
Verdict
The clearest difference is in-app purchases: Flex Log at none against Truly Simple Symptom Log's 1. Flex Log also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (12.4 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Truly Simple Symptom Log sells 1 one-off in-app purchase. Flex Log asks for nothing beyond the download.
Flex Log ships an update every 5 days, Truly Simple Symptom Log every 3 weeks. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.
| Parameter | Flex Log | Truly Simple Symptom Log |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days β better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, Mac β better |
| Requires iOS | 12.4 β better | 17.0 |
| Further details β not scored | ||
| Size | 18 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | Aaron Larner | Colin Wright |
In-app purchases
Flex Log
No in-app purchases
Truly Simple Symptom Log
- Unlock Pro$4.99
Questions
Is Flex Log free?
Is Truly Simple Symptom Log free?
Do Flex Log or Truly Simple Symptom Log have ads?
Which is updated more often, Flex Log or Truly Simple Symptom Log?
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