# Retaining Walls App vs U

The clearest difference is rating: U at 5.0 against Retaining Walls App's 1.5. Retaining Walls App's advantage is ratings volume (15 vs 1) and update cadence (every 5 weeks vs every 2 months). 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.

U holds the better App Store score, 5.0 against 1.5. That said, the two scores are not equally well evidenced: Retaining Walls App has 15 ratings behind it against 1, so its average is the more settled of the two.

Retaining Walls App ships an update every 5 weeks, U every 2 months. The most recent releases landed on June 11, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | Retaining Walls App | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (15 ratings)](https://appshunter.io/ios/app/retaining-walls-app/id524171239/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/u-level/id1448340593/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 34.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 54 MB | 18 MB |
| Requires iOS | **8.0** | 14 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Allan Block](https://appshunter.io/developer/524171242) | [Mike East](https://appshunter.io/developer/1459101077) |

## What reviewers say

### Retaining Walls App

[App page](https://appshunter.io/ios/app/retaining-walls-app/id524171239)

Estimate residential retaining wall projects with a step-by-step process. Input project details like height, length, and soil type to get block quantity estimates. Submit projects for a free in-depth estimate and find local dealers.

**Highlights:** Step-by-step project estimation, Block quantity calculation, Optional coordinate input for accuracy, Free in-depth estimate submission, Photo gallery for project ideas, Dealer locator

**Features:** macOS Compatibility

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-level/id1448340593)

This professional tool allows construction professionals to precisely measure 3D terrain and hardscape elements. It captures X, Y, and Z coordinates, calculates slope percentages, and displays elevation above sea level. Users can save, email, or upload survey data directly into CAD software for accurate job bidding.

**Highlights:** 3D X,Y,Z measurement plotting, Save, email, and upload survey data, Direct CAD integration, Calculate % of slope, Feet above sea level elevation, Photos with data, Compass functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Retaining Walls App free?

Retaining Walls App is free to download, with no in-app purchases.

### Is U free?

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

### Which has better reviews, Retaining Walls App or U?

U is rated higher. Retaining Walls App averages 1.5 out of 5 from 15 ratings, while U averages 5.0 from 1 ratings.

### Do Retaining Walls App or U have ads?

Neither Retaining Walls App nor U shows ads.

### Which is updated more often, Retaining Walls App or U?

Retaining Walls App ships an update every 5 weeks, and U every 2 months. Most recently, Retaining Walls App was updated on June 11, 2026 and U on July 5, 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.*