# Nject vs SemaCalc

The clearest difference is ratings volume: Nject at 126 against SemaCalc's 6. Nject also leads on update cadence (every 6 weeks vs every 4 months) and chart position (#11 vs #195). SemaCalc's advantage is review sentiment (71% vs 57%) and price ($3.99 vs $4.99). On rating, ads, in-app purchases and device support there is nothing between them.

Nject costs $4.99 and SemaCalc $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SemaCalc holds the better App Store score, 4.2 against 4.0. 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: 57% of Nject's written reviews are positive against 71% of SemaCalc's.

Nject ships an update every 6 weeks, SemaCalc every 4 months. The most recent releases landed on September 29, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | Nject | SemaCalc |
| --- | --- | --- |
| Price | $4.99 | **$3.99** |
| Rating | [4.0 (126 ratings)](https://appshunter.io/ios/app/nject/id1620565745/reviews) | **[4.2 (6 ratings)](https://appshunter.io/ios/app/semacalc/id6502772237/reviews)** |
| Number of ratings | **126** | 6 |
| Positive reviews | 57.4% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | **Free** | Paid |
| Best chart rank | **#11** | #195 |
| Size | 68 MB | 16 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Keaton Benning, LLC](https://appshunter.io/developer/1692217678) | [Cynthia Ruiz](https://appshunter.io/developer/1746738074) |

## What reviewers say

### Nject

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

**Currently charting:** #11 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)


### SemaCalc

[App page](https://appshunter.io/ios/app/semacalc/id6502772237)

**Currently charting:** #195 Top Paid · Medical (US App Store)

This medical app simplifies semaglutide dilution calculations for healthcare professionals. It provides precise dilution guidance and recommends appropriate syringes for dosage preparation, enhancing accuracy and efficiency.

**Highlights:** Semaglutide dilution calculation, Precise dilution guidance, Syringe recommendations, Dosage preparation, Workflow streamlining

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nject free?

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

### Is SemaCalc free?

SemaCalc costs $3.99, with no in-app purchases.

### Which has better reviews, Nject or SemaCalc?

SemaCalc is rated higher. Nject averages 4.0 out of 5 from 126 ratings, while SemaCalc averages 4.2 from 6 ratings.

### Do Nject or SemaCalc have ads?

Neither Nject nor SemaCalc shows ads.

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

Nject ships an update every 6 weeks, and SemaCalc every 4 months. Most recently, Nject was updated on September 29, 2026 and SemaCalc on August 27, 2026.

### Which is more popular, Nject or SemaCalc?

Nject currently peaks at #11 in the App Store charts, and SemaCalc at #195. Chart position reflects recent download velocity rather than total install base.

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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.*