# MileagePlus X vs AU Library Self Check

The clearest difference is update cadence: AU Library Self Check at fortnightly against MileagePlus X's monthly. AU Library Self Check also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.2). 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.

MileagePlus X ships an update monthly, AU Library Self Check fortnightly. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | MileagePlus X | AU Library Self Check |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (21K ratings)](https://appshunter.io/ios/app/mileageplus-x/id928624751/reviews)** | — |
| Number of ratings | **21K** | — |
| Positive reviews | 21.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 58 MB | 355 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [UAL](https://appshunter.io/developer/928624750) | [Meescan Inc.](https://appshunter.io/developer/1609729285) |

## What reviewers say

### MileagePlus X

[App page](https://appshunter.io/ios/app/mileageplus-x/id928624751)

Earn United MileagePlus award miles on everyday purchases. Discover nearby merchants, buy eGift cards, and browse curated deals. Track your miles as they post directly to your account with a refreshed, intuitive design.

**Highlights:** Earn award miles on purchases, Discover nearby merchants, Buy eGift cards, Browse curated deals, Track miles earned, Intuitive design

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💰 Earn miles on everyday purchases
- 🛒 Easy way to earn United miles
- 🛫 Useful for earning miles for travel
- 🤑 Free miles for shopping

**What reviewers complain about**

- 🤖 Unreliable app with frequent issues
- 🚫 Transactions often declined for no reason
- 🕰️ Slow and frustrating purchase process
- 🗣️ Poor customer service and lack of support
- 🔒 Security concerns and account issues

**Reported bugs**

- Recurring transaction decline issues
- Inconsistent tracking of earned miles
- Glitches with gift card purchases

**Requested features**

- Improve search and location functionality
- Enhance user experience and app stability
- Provide better customer support channels


### AU Library Self Check

[App page](https://appshunter.io/ios/app/au-library-self-check/id1410853649)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MileagePlus X free?

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

### Is AU Library Self Check free?

AU Library Self Check is free to download, with no in-app purchases.

### Do MileagePlus X or AU Library Self Check have ads?

Neither MileagePlus X nor AU Library Self Check shows ads.

### Which is updated more often, MileagePlus X or AU Library Self Check?

MileagePlus X ships an update monthly, and AU Library Self Check fortnightly. Most recently, MileagePlus X was updated on October 26, 2026 and AU Library Self Check on October 19, 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.*