# REVIAN® vs Nject

The clearest difference is price: REVIAN® at Free against Nject's $4.99. REVIAN® also leads on iOS requirement (12.0 vs 15.1). Nject's advantage is rating (4.0 vs 3.7) and chart position (#7 vs unranked). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

REVIAN® is free to download; Nject costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Nject holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 46 and 126 respectively. Written reviews complicate that: 63% of REVIAN®'s written reviews are positive against 57% of Nject's, so the app with the better star average is not the one people write more warmly about.

REVIAN® ships an update every 3 months, Nject every 6 weeks. The most recent releases landed on September 19, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | REVIAN® | Nject |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [3.7 (46 ratings)](https://appshunter.io/ios/app/revian/id1301479830/reviews) | **[4.0 (126 ratings)](https://appshunter.io/ios/app/nject/id1620565745/reviews)** |
| Number of ratings | 46 | **126** |
| Positive reviews | **62.5% of reviews** | 57.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Best chart rank | — | **#7** |
| Size | 44 MB | 68 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Revian, Inc.](https://appshunter.io/developer/1463047924) | [Keaton Benning, LLC](https://appshunter.io/developer/1692217678) |

## 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


### Nject

[App page](https://appshunter.io/ios/app/nject/id1620565745)

**Currently charting:** #7 Top Paid · Medical, #191 Top Grossing · Medical (US App Store)

This app serves as a comprehensive resource for aesthetic professionals. It offers tools for dilution calculations, facilitates partnerships, and provides a live forum with experts. Users can also find assistance with vascular occlusion and access other valuable information.

**Highlights:** Dilution Calculators, Partnership Facilitation, Live Expert Forum, Vascular Occlusion Help

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

**In-app purchases:** none

**What reviewers like**

- 👍 User-friendly and simple interface
- 🎯 Accurate dosing calculations for toxin injections
- 📱 Visual syringe markings aid learning
- 🚀 Quick and efficient dosage conversions
- 💬 Responsive developer addressing user feedback

**What reviewers complain about**

- 🐛 App crashes when selecting syringes
- 🐛 Syringe dropdown menu shows 'no data' or won't populate
- 🐛 Screen doesn't scroll to access calculate button
- 🐛 Force closing on multiple devices
- ❌ Limited syringe options available

**Reported bugs**

- App crashes when selecting syringe option
- Syringe dropdown menu fails to load options
- Screen doesn't scroll to reveal calculate button after data entry
- Force closing on both iOS and Android devices
- Stuck on single medication screen (Semaglutide) with no navigation

**Requested features**

- Add Comfortox 0.5mL syringe option
- Add TB (tuberculin) syringe options
- Add allergen/product selection dropdown (Botox, Dysport, Azzalure, etc.)
- Visual indicator showing exact pull location on syringe for specific units
- Support for mg/mL dosing (for Semaglutide, tirzepatide, compounded medications)


## Frequently asked questions

### Is REVIAN® free?

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

### Is Nject free?

Nject costs $4.99, with no in-app purchases.

### Which has better reviews, REVIAN® or Nject?

Nject is rated higher. REVIAN® averages 3.7 out of 5 from 46 ratings, while Nject averages 4.0 from 126 ratings.

### Do REVIAN® or Nject have ads?

Neither REVIAN® nor Nject shows ads.

### Which is updated more often, REVIAN® or Nject?

REVIAN® ships an update every 3 months, and Nject every 6 weeks. Most recently, REVIAN® was updated on September 19, 2026 and Nject on September 23, 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.*