# Refill Assistant vs Nject

The clearest difference is price: Refill Assistant at Free against Nject's $4.99. Refill Assistant also leads on iOS requirement (12.0 vs 15.1). Nject's advantage is update cadence (every 6 weeks vs every 10 months) and review sentiment (57% vs 33%). On ads, in-app purchases, monetization model and device support there is nothing between them.

Refill Assistant 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. That said, the two scores are not equally well evidenced: Nject has 126 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 33% of Refill Assistant's written reviews are positive against 57% of Nject's.

Refill Assistant ships an update every 10 months, Nject every 6 weeks. The most recent releases landed on August 12, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Refill Assistant | Nject |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [3.7 (6 ratings)](https://appshunter.io/ios/app/refill-assistant/id1402675050/reviews) | **[4.0 (126 ratings)](https://appshunter.io/ios/app/nject/id1620565745/reviews)** |
| Number of ratings | 6 | **126** |
| Positive reviews | 33.3% of reviews | **57.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Best chart rank | — | **#19** |
| Size | 22 MB | 68 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Refill Assistant Limited](https://appshunter.io/developer/1402675049) | [Keaton Benning, LLC](https://appshunter.io/developer/1692217678) |

## What reviewers say

### Refill Assistant

[App page](https://appshunter.io/ios/app/refill-assistant/id1402675050)

Easily communicate with your compounding pharmacy for medication refills. Submit requests, receive reminders, view your prescription history, and message your pharmacist directly. Streamline your refill process and save time on phone calls.

**Highlights:** Submit medication refills, Receive refill reminders, View prescription history, Direct pharmacist messaging, Find participating pharmacies

**Features:** macOS Compatibility

**In-app purchases:** none


### Nject

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

**Currently charting:** #19 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 Refill Assistant free?

Refill Assistant 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, Refill Assistant or Nject?

Nject is rated higher. Refill Assistant averages 3.7 out of 5 from 6 ratings, while Nject averages 4.0 from 126 ratings.

### Do Refill Assistant or Nject have ads?

Neither Refill Assistant nor Nject shows ads.

### Which is updated more often, Refill Assistant or Nject?

Refill Assistant ships an update every 10 months, and Nject every 6 weeks. Most recently, Refill Assistant was updated on August 12, 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.*