# Aptios vs Nject

The clearest difference is price: Aptios at Free against Nject's $4.99. Aptios also leads on rating (5.0 vs 4.0). Nject's advantage is ratings volume (126 vs 3) and chart position (#10 vs unranked). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

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

Aptios holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Nject has 126 ratings behind it against 3, so its average is the more settled of the two.

Aptios ships an update monthly, Nject every 6 weeks. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Aptios | Nject |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/aptios/id1614428712/reviews)** | [4.0 (126 ratings)](https://appshunter.io/ios/app/nject/id1620565745/reviews) |
| Number of ratings | 3 | **126** |
| Positive reviews | — | 57.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free | Free |
| Best chart rank | — | **#10** |
| Size | 256 MB | 68 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [AbbVie](https://appshunter.io/developer/658342806) | [Keaton Benning, LLC](https://appshunter.io/developer/1692217678) |

## What reviewers say

### Aptios

[App page](https://appshunter.io/ios/app/aptios/id1614428712)

Participate in clinical studies by submitting images and videos directly to research teams. This app ensures consistent image capture with guided tools for lighting, angles, and distance, designed for aesthetic studies.

**Highlights:** Study-specific interface, Guided image capture tools, Image and video submission, Secure data upload, User profile management, Capture reminders

**Features:** macOS Compatibility

**In-app purchases:** none


### Nject

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

**Currently charting:** #10 Top Paid · 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 Aptios free?

Aptios 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, Aptios or Nject?

Aptios is rated higher. Aptios averages 5.0 out of 5 from 3 ratings, while Nject averages 4.0 from 126 ratings.

### Do Aptios or Nject have ads?

Neither Aptios nor Nject shows ads.

### Which is updated more often, Aptios or Nject?

Aptios ships an update monthly, and Nject every 6 weeks. Most recently, Aptios was updated on October 3, 2026 and Nject on October 12, 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.*