# Flex Log vs TriLog

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.

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.

## The numbers

| Metric | Flex Log | TriLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trilog/id6754526159/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 18 MB | 54 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Aaron Larner](https://appshunter.io/developer/950120608) | [Joseph Orr](https://appshunter.io/developer/1844012659) |

## What reviewers say

### Flex Log

[App page](https://appshunter.io/ios/app/flex-log/id6476252928)

**Features:** macOS Compatibility

**In-app purchases:** none


### TriLog

[App page](https://appshunter.io/ios/app/trilog/id6754526159)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TriLog Pro | $7.99 | per month |
| TriLog Pro | $59.99 | per year |


## Frequently asked questions

### Is Flex Log free?

Flex Log is free to download, with no in-app purchases.

### Is TriLog free?

TriLog is free to download, with in-app purchases available.

### Do Flex Log or TriLog have ads?

Neither Flex Log nor TriLog shows ads.

### Which is updated more often, Flex Log or TriLog?

Flex Log ships an update every 5 days, and TriLog every 3 weeks. Most recently, Flex Log was updated on September 15, 2026 and TriLog on July 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*