The 4th Dimension vs Nject
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The 4th Dimension
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- Learn face anatomy and the aging process in augmented reality and enjoy the cutting edge technologies developed by Nextmotion company
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...
Screenshots
Verdict
The clearest difference is price: The 4th Dimension at Free against Nject's $4.99. Nject's advantage is update cadence (every 6 weeks vs every 10 months) and chart position (#10 vs unranked). On ads, in-app purchases, device support and iOS requirement 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
The 4th Dimension is free to download; Nject costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
The 4th Dimension ships an update every 10 months, Nject every 6 weeks. The most recent releases landed on September 20, 2026 and September 29, 2026 respectively.
| Parameter | The 4th Dimension | Nject |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | — | 4.0 (126 ratings) — better |
| Positive reviews | — | 57.4% of reviews |
| Number of ratings | — | 126 — better |
| Update frequency | Every 10 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Best chart rank | — | #10 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1.6 GB | 68 MB |
| Age rating | 12+ | 17+ |
| Developer | NextMotion | Keaton Benning, LLC |
Bugs and requests
The 4th Dimension
Not enough reviews yet to summarise bugs or 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
In-app purchases
The 4th Dimension
No in-app purchases
Nject
No in-app purchases
Questions
Is The 4th Dimension free?
Is Nject free?
Do The 4th Dimension or Nject have ads?
Which is updated more often, The 4th Dimension or Nject?
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