# Flowly vs Mirror Delay

Flowly and Mirror Delay are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Flowly sells 2 in-app purchases, starting at $2.99 per month and Mirror Delay sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Flowly ships an update every 10 days, Mirror Delay every 6 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Flowly | Mirror Delay |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 6 days** |
| Monetization | Freemium | — |
| Size | 13 MB | 4 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HOOROO NETWORK PTE. LTD.](https://appshunter.io/developer/1861714013) | [Kaoru Okamoto](https://appshunter.io/developer/6771668859) |

## What reviewers say

### Flowly

[App page](https://appshunter.io/ios/app/flowly-cycle-and-period-tracker/id6761820293)

This app tracks your menstrual cycle, integrating biometric data like HRV and sleep from your Apple Watch to predict cognitive peaks, energy windows, and recovery needs. It offers personalized daily recommendations for work, nutrition, and movement based on your cycle phase.

**Highlights:** Predicts periods and cognitive peaks, Integrates Apple Watch HRV and sleep data, Personalized daily action recommendations, Tracks symptoms, mood, and energy, 5-dimension cognitive performance forecast, Privacy-focused local data storage

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro · Monthly | $2.99 | per month |
| Pro · Annual | $17.99 | per year |


### Mirror Delay

[App page](https://appshunter.io/ios/app/mirror-delay/id6771668856)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mirror Delay Plus Monthly | $3.99 | per month |
| Mirror Delay Plus Yearly | $29.99 | per year |


## Frequently asked questions

### Is Flowly free?

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

### Is Mirror Delay free?

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

### Do Flowly or Mirror Delay have ads?

Neither Flowly nor Mirror Delay shows ads.

### Which is updated more often, Flowly or Mirror Delay?

Flowly ships an update every 10 days, and Mirror Delay every 6 days. Most recently, Flowly was updated on October 23, 2026 and Mirror Delay on October 24, 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.*