# REVIAN® vs EigenFlow 3

The clearest difference is update cadence: EigenFlow 3 at every 5 weeks against REVIAN®'s every 3 months. REVIAN®'s advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

REVIAN® ships an update every 3 months, EigenFlow 3 every 5 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | REVIAN® | EigenFlow 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (51 ratings)](https://appshunter.io/ios/app/revian/id1301479830/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 44 MB | 105 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Revian, Inc.](https://appshunter.io/developer/1463047924) | [Paul Curtis](https://appshunter.io/developer/1053758176) |

## What reviewers say

### REVIAN®

[App page](https://appshunter.io/ios/app/revian/id1301479830)

This app controls a hair regrowth system, offering personalized treatment for hair loss. It allows users to start/pause treatments, receive reminders, and track progress with photos. It's designed to complement a specific hair regrowth system.

**Highlights:** Control hair regrowth treatments, Schedule treatment reminders, Track progress with photos, Personalized treatment control, FDA-cleared system integration

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

**In-app purchases:** none


### EigenFlow 3

[App page](https://appshunter.io/ios/app/eigenflow-3/id6737016093)

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

**In-app purchases:** none


## Frequently asked questions

### Is REVIAN® free?

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

### Is EigenFlow 3 free?

EigenFlow 3 is free to download, with no in-app purchases.

### Do REVIAN® or EigenFlow 3 have ads?

Neither REVIAN® nor EigenFlow 3 shows ads.

### Which is updated more often, REVIAN® or EigenFlow 3?

REVIAN® ships an update every 3 months, and EigenFlow 3 every 5 weeks. Most recently, REVIAN® was updated on October 20, 2026 and EigenFlow 3 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.*