# SGI2023 vs AQI Index

The clearest difference is in-app purchases: SGI2023 at none against AQI Index's 8. SGI2023 also leads on ads (none vs shown) and update cadence (every 5 days vs every 4 weeks). On price and device support there is nothing between them.

Both are free to download. AQI Index sells 8 in-app purchases, starting at $0.99 per month. SGI2023 asks for nothing beyond the download.

SGI2023 ships an update every 5 days, AQI Index every 4 weeks. Both last shipped on November 8, 2026.

## The numbers

| Metric | SGI2023 | AQI Index |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/aqi-index/id6474164756/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 4 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 81 MB | 100 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [vFairs LLC](https://appshunter.io/developer/1349888986) | [nguyen thanh](https://appshunter.io/developer/1481436893) |

## What reviewers say

### SGI2023

[App page](https://appshunter.io/ios/app/sgi2023/id6472299622)

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

**In-app purchases:** none


### AQI Index

[App page](https://appshunter.io/ios/app/aqi-index/id6474164756)

Provides real-time global air quality data, covering over 130 countries and 30,000 stations. Offers health recommendations and pollution rankings for cities worldwide. Ideal for sensitive individuals and outdoor enthusiasts.

**Highlights:** Real-time global air quality map, Health recommendations, Worldwide pollution rankings, Sensitive group information, Extensive sensor network coverage

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Plan | $0.99 | per month |
| Three Months VIP | $1.99 | per 3 months |
| Premium Half-Year Plan | $2.99 | per 6 months |
| Premium Annual Plan | $4.99 | per year |
| One Month VIP | $4.99 | per month |
| Six Months VIP | $24.99 | per 6 months |
| 1 Year VIP | $49.99 | per year |
| No ads Pack | $7.99 | one-time |


## Frequently asked questions

### Is SGI2023 free?

SGI2023 is free to download, with no in-app purchases.

### Is AQI Index free?

AQI Index is free to download, with in-app purchases available.

### Do SGI2023 or AQI Index have ads?

AQI Index shows ads; SGI2023 does not.

### Which is updated more often, SGI2023 or AQI Index?

SGI2023 ships an update every 5 days, and AQI Index every 4 weeks. Most recently, SGI2023 was updated on November 8, 2026 and AQI Index on November 8, 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.*