# IATS EMS vs AA账单

IATS EMS and AA账单 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | IATS EMS | AA账单 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [深圳易票科技有限公司](https://appshunter.io/developer/1676202439) | [燕梅 高](https://appshunter.io/developer/1860144880) |

## What reviewers say

### IATS EMS

[App page](https://appshunter.io/ios/app/iats-ems/id6754830076)

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

**In-app purchases:** none


### AA账单

[App page](https://appshunter.io/ios/app/aa/id6758886034)

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

**In-app purchases:** none


## Frequently asked questions

### Is IATS EMS free?

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

### Is AA账单 free?

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

### Do IATS EMS or AA账单 have ads?

Neither IATS EMS nor AA账单 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.*