# Survey Valuation vs BIL Auth

The clearest difference is update cadence: Survey Valuation at every 6 weeks against BIL Auth's every 9 months. BIL Auth's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Survey Valuation ships an update every 6 weeks, BIL Auth every 9 months. The most recent releases landed on August 6, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Survey Valuation | BIL Auth |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 159 MB | 25 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [CoreLogic U.K. Limited](https://appshunter.io/developer/1346556721) | [Mohammad Ali](https://appshunter.io/developer/1782905918) |

## What reviewers say

### Survey Valuation

[App page](https://appshunter.io/ios/app/survey-valuation/id1370424044)

This mobile surveying app streamlines the process of creating mortgage valuation and RICS HomeBuyer reports on-site. It offers an intuitive interface, in-built validation, and data capture tools to improve accuracy and reduce administrative time.

**Highlights:** Intuitive user interface, Intelligent map route functionality, Simple survey screens, Additional data capture tools, Floor plan tool, Standard phrases and custom descriptions, In-built access to comparable data

**Features:** Vision Pro support

**In-app purchases:** none


### BIL Auth

[App page](https://appshunter.io/ios/app/bil-auth/id6738920573)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Survey Valuation free?

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

### Is BIL Auth free?

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

### Do Survey Valuation or BIL Auth have ads?

Neither Survey Valuation nor BIL Auth shows ads.

### Which is updated more often, Survey Valuation or BIL Auth?

Survey Valuation ships an update every 6 weeks, and BIL Auth every 9 months. Most recently, Survey Valuation was updated on August 6, 2026 and BIL Auth on September 9, 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.*