# HIV Antibody Database vs How it Works

The clearest difference is ratings volume: HIV Antibody Database at 3 against How it Works's 1. How it Works's advantage is iOS requirement (7.0 vs 13.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for HIV Antibody Database against 5.0 for How it Works. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

## The numbers

| Metric | HIV Antibody Database | How it Works |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/hiv-antibody-database/id1232472905/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/how-it-works-mp40/id1330327770/reviews) |
| Number of ratings | **3** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | — |
| Monetization | Free | Free |
| Size | 10 MB | 116 MB |
| Requires iOS | 13.0 | **7.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Zentropy Software](https://appshunter.io/developer/289446244) | [Noble Empire South Limited](https://appshunter.io/developer/1293786398) |

## What reviewers say

### HIV Antibody Database

[App page](https://appshunter.io/ios/app/hiv-antibody-database/id1232472905)

This reference tool provides scientists with quick access to sequence, structure, and neutralization data for anti-HIV antibodies and the HIV-1 strains they target. It aids HIV vaccine research by offering insights into antibody development and recognition.

**Highlights:** Antibody sequence data, Antibody structure data, Neutralization data, HIV-1 strain recognition, Reference for vaccine research

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

**In-app purchases:** none


### How it Works

[App page](https://appshunter.io/ios/app/how-it-works-mp40/id1330327770)

Explore the inner workings of the German WWII MP40 submachine gun with a detailed 3D model. Features include operation animations, accessory options, slow motion, X-ray, cutaway, and tap-to-hide modes. You can also use augmented reality to capture photos.

**Highlights:** Detailed 3D model, Operation animations (fire, reload), Accessory options, Slow motion playback, X-ray and cutaway modes, Tap'n'Hide functionality, Augmented reality photos

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

**In-app purchases:** none


## Frequently asked questions

### Is HIV Antibody Database free?

HIV Antibody Database is free to download, with no in-app purchases.

### Is How it Works free?

How it Works is free to download, with no in-app purchases.

### Which has better reviews, HIV Antibody Database or How it Works?

HIV Antibody Database and How it Works are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do HIV Antibody Database or How it Works have ads?

Neither HIV Antibody Database nor How it Works shows ads.

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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.*