# Hygrometer Barometer vs AI Car Modifications ++

The clearest difference is ads: AI Car Modifications ++ at none against Hygrometer Barometer's shown. AI Car Modifications ++ also leads on update cadence (every 2 months vs every 7 months). Hygrometer Barometer's advantage is iOS requirement (13 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Hygrometer Barometer sells 1 one-off in-app purchase and AI Car Modifications ++ sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Hygrometer Barometer ships an update every 7 months, AI Car Modifications ++ every 2 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Hygrometer Barometer | AI Car Modifications ++ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (156 ratings)](https://appshunter.io/ios/app/hygrometer-barometer/id888520226/reviews)** | — |
| Number of ratings | **156** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 11 MB | 86 MB |
| Requires iOS | **13** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [RIA TEX SDN. BHD.](https://appshunter.io/developer/6791888685) |

## What reviewers say

### Hygrometer Barometer

[App page](https://appshunter.io/ios/app/hygrometer-barometer/id888520226)

This app measures relative humidity and calculates the discomfort index using your current location. It displays humidity in a badge and offers barometric readings for compatible devices. Use it to gauge outdoor conditions for appropriate clothing choices.

**Highlights:** Measures relative humidity via GPS, Calculates discomfort index (DI), Displays humidity in badge, Barometric pressure readings (iPhone 6+), Outdoor humidity reference

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### AI Car Modifications ++

[App page](https://appshunter.io/ios/app/ai-car-modifications-plus-plus/id6791888682)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly-Trial | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $39.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Hygrometer Barometer free?

Hygrometer Barometer is free to download, with in-app purchases available.

### Is AI Car Modifications ++ free?

AI Car Modifications ++ is free to download, with in-app purchases available.

### Do Hygrometer Barometer or AI Car Modifications ++ have ads?

Hygrometer Barometer shows ads; AI Car Modifications ++ does not.

### Which is updated more often, Hygrometer Barometer or AI Car Modifications ++?

Hygrometer Barometer ships an update every 7 months, and AI Car Modifications ++ every 2 months. Most recently, Hygrometer Barometer was updated on November 1, 2026 and AI Car Modifications ++ on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*