# J vs Inifni Lab

The clearest difference is update cadence: J at weekly against Inifni Lab's every 6 months. J also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

J ships an update weekly, Inifni Lab every 6 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | J | Inifni Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/j-tip/id1492507545/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 months |
| Monetization | Free | — |
| Size | 17 MB | 31 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [National Medical Products Inc.](https://appshunter.io/developer/937098057) | [Infini Lab](https://appshunter.io/developer/1567053359) |

## What reviewers say

### J

[App page](https://appshunter.io/ios/app/j-tip/id1492507545)

This medical system offers a virtually pain-free injection experience, enhancing patient satisfaction. It is utilized by over 400 hospitals and has helped more than 5 million patients. Tutorial videos are available for training, alongside user guides and instructions for use.

**Highlights:** Needle-free injection system, Virtually pain-free procedures, Improves patient satisfaction, Used in 400+ hospitals, Tutorial videos for training, User guide and instructions for use

**Features:** macOS Compatibility

**In-app purchases:** none


### Inifni Lab

[App page](https://appshunter.io/ios/app/inifni-lab/id1567053357)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is J free?

J is free to download, with no in-app purchases.

### Is Inifni Lab free?

Inifni Lab is free to download, with no in-app purchases.

### Do J or Inifni Lab have ads?

Neither J nor Inifni Lab shows ads.

### Which is updated more often, J or Inifni Lab?

J ships an update weekly, and Inifni Lab every 6 months. Most recently, J was updated on November 3, 2026 and Inifni Lab on November 7, 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.*