Nject vs MD Codes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nject
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.
- Dilution Calculators
- Partnership Facilitation
- Live Expert Forum
- Vascular Occlusion Help
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Nject is a one stop shop for all your Aesthetics needs like: Dilution Calculators, Partnerships, Live Forum with experts, Vascular Occlusion help, and more...
MD Codes
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This app is an introduction to the MD Codes™, a medical system using injectables developed by the renowned Dr. Mauricio de Maio. The app presents the basic concepts of the MD Codes™ along with corresponding Flashcards, which may help healthcare professionals understand the techniques behind each code. You can also explore the 7-Point Shape™ and 9-Point Shape™ strategies designed to expand patients’ perspectives on the social and emotional attributes. You will have access to: - What are MD Codes™? - How to read MD Codes™ - How to read the Flashcards - MD Codes™ and Flashcards - 7-Point Shape™ and 9-Point Shape™ Important: This app is for educational purposes only and does not qualify individuals to perform procedures. It also takes no responsibility for any misuse of the information presented. It is intended for healthcare professionals interested in learning the basic concepts of MD Codes™. For more information, visit mdcodes.com and discover our educational programs.
Screenshots
Verdict
The clearest difference is price: MD Codes at Free against Nject's $4.99. MD Codes also leads on iOS requirement (13.0 vs 15.1). Nject's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 8 months). On in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
MD Codes is free to download; Nject costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Nject ships an update every 6 weeks, MD Codes every 8 months. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.
| Parameter | Nject | MD Codes |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.0 (126 ratings) — better | — |
| Positive reviews | 57.4% of reviews | — |
| Number of ratings | 126 — better | — |
| Update frequency | Every 6 weeks — better | Every 8 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | #8 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 68 MB | 41 MB |
| Age rating | 17+ | 17+ |
| Developer | Keaton Benning, LLC | CLINICA MEDICA DR MAURICIO DE MAIO LTDA |
Bugs and requests
Nject
Reported bugs
10 issues- 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
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- Info button repeatedly triggers review window instead of showing help
- Semaglutide advertisement prevents completing calculations
- Decimal point entry not functioning properly
- App crashes after recent Semaglutide update
- Incorrect Comfortox syringe image (shows insulin syringe instead)
Requested features
9 requests- 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)
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- Removable Semaglutide advertisement
- Back button for navigation
- Improved syringe image clarity and accuracy
- Support for more injectable medications beyond toxins
MD Codes
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nject
No in-app purchases
MD Codes
No in-app purchases
