# Trackuility vs Flow

The clearest difference is price: Trackuility at Free against Flow's $3.99. Flow's advantage is update cadence (every 3 days vs every 5 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Trackuility is free to download; Flow costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trackuility ships an update every 5 months, Flow every 3 days. The most recent releases landed on September 11, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Trackuility | Flow |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/trackuility-mecfs-pacing/id1632804790/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 11 MB | 36 MB |
| Requires iOS | 17.0 | **16.2** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [adrian tyrevall](https://appshunter.io/developer/1632804792) | [LOKRIS](https://appshunter.io/developer/1399579866) |

## What reviewers say

### Trackuility

[App page](https://appshunter.io/ios/app/trackuility-mecfs-pacing/id1632804790)

This app helps individuals manage ME/CFS, POTS, and long COVID by tracking activity levels and providing insights into personal limits. It offers detailed reports on crashes and symptoms, aiding in understanding health patterns and identifying triggers.

**Highlights:** Activity level tracking, Customizable limit notifications, Symptom and note registration, PEM (Post-Exertional Malaise) reports, Integration with Apple Health, 17+ tracked metrics

**In-app purchases:** none


### Flow

[App page](https://appshunter.io/ios/app/flow-hydration-tracker/id6758463516)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Trackuility free?

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

### Is Flow free?

Flow costs $3.99, with no in-app purchases.

### Do Trackuility or Flow have ads?

Neither Trackuility nor Flow shows ads.

### Which is updated more often, Trackuility or Flow?

Trackuility ships an update every 5 months, and Flow every 3 days. Most recently, Trackuility was updated on September 11, 2026 and Flow on September 13, 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.*