# MileagePlus X vs Terrestream

The clearest difference is update cadence: Terrestream at every 3 days against MileagePlus X's monthly. Terrestream also leads on rating (5.0 vs 4.8) and device support (3 vs 1). MileagePlus X's advantage is ratings volume (21K vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Terrestream holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: MileagePlus X has 21K ratings behind it against 1, so its average is the more settled of the two.

MileagePlus X ships an update monthly, Terrestream every 3 days. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MileagePlus X | Terrestream |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (21K ratings)](https://appshunter.io/ios/app/mileageplus-x/id928624751/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/terrestream/id6751147871/reviews)** |
| Number of ratings | **21K** | 1 |
| Positive reviews | 21.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | Free |
| Size | 58 MB | 19 MB |
| Requires iOS | 18.2 | **18.0** |
| Devices | iPhone | **iPhone, Mac, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [UAL](https://appshunter.io/developer/928624750) | [Terrestream](https://appshunter.io/developer/1833687298) |

## 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


### Terrestream

[App page](https://appshunter.io/ios/app/terrestream/id6751147871)

Monitor your home's indoor air quality and receive actionable guidance. Understand how outdoor conditions impact your air and make informed decisions about ventilation and filtration.

**Highlights:** Real-time indoor air quality readings, Outdoor condition integration, Actionable ventilation guidance, Home screen widgets, Apple Watch companion app, Historical air quality data, Notification history

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MileagePlus X free?

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

### Is Terrestream free?

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

### Which has better reviews, MileagePlus X or Terrestream?

Terrestream is rated higher. MileagePlus X averages 4.8 out of 5 from 21K ratings, while Terrestream averages 5.0 from 1 ratings.

### Do MileagePlus X or Terrestream have ads?

Neither MileagePlus X nor Terrestream shows ads.

### Which is updated more often, MileagePlus X or Terrestream?

MileagePlus X ships an update monthly, and Terrestream every 3 days. Most recently, MileagePlus X was updated on November 5, 2026 and Terrestream on October 30, 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.*