# SMART Union vs Prime Storage

The clearest difference is rating: SMART Union at 3.3 against Prime Storage's 3.0. SMART Union also leads on ratings volume (28 vs 4). On price, review sentiment, update cadence and ads there is nothing between them.

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

SMART Union holds the better App Store score, 3.3 against 3.0. That said, the two scores are not equally well evidenced: SMART Union has 28 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 29% of SMART Union's written reviews are positive against 32% of Prime Storage's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on August 28, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | SMART Union | Prime Storage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (28 ratings)](https://appshunter.io/ios/app/smart-union/id996490914/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/prime-storage/id1472735599/reviews) |
| Number of ratings | **28** | 4 |
| Positive reviews | 28.6% of reviews | **32.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 165 MB | 126 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [International Association of Sheet Metal, Air, Rail and Transportation Workers](https://appshunter.io/developer/1400949744) | [Prime Storage](https://appshunter.io/developer/1472735598) |

## What reviewers say

### SMART Union

[App page](https://appshunter.io/ios/app/smart-union/id996490914)

Stay informed with union news and important notifications. Access member benefits, local union information, and resources to manage your meeting experience with schedules and maps.

**Highlights:** Union news updates, Important notifications, Member benefits access, Local union information, Meeting schedules and maps, Member resources

**In-app purchases:** none


### Prime Storage

[App page](https://appshunter.io/ios/app/prime-storage/id1472735599)

Easily rent a self-storage unit, manage your account, and pay bills. Enjoy a contact-free, 24/7 experience that fits your schedule. Find the space you need for your life's demands.

**Highlights:** Rent self-storage units, Manage your account, Pay bills, Contact-free access, 24/7 availability

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SMART Union free?

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

### Is Prime Storage free?

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

### Which has better reviews, SMART Union or Prime Storage?

SMART Union is rated higher. SMART Union averages 3.3 out of 5 from 28 ratings, while Prime Storage averages 3.0 from 4 ratings.

### Do SMART Union or Prime Storage have ads?

Neither SMART Union nor Prime Storage shows ads.

### Which is updated more often, SMART Union or Prime Storage?

SMART Union ships an update every 2 months, and Prime Storage every 2 months. Most recently, SMART Union was updated on August 28, 2026 and Prime Storage on September 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.*