# Pass vs Expert Buffer Designer

The clearest difference is ads: Pass at none against Expert Buffer Designer's shown. Pass also leads on monetization model (free vs ad-supported) and iOS requirement (11.0 vs 13.0). On price, rating, ratings volume 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.

On the App Store both sit at effectively the same score — 5.0 for Pass against 5.0 for Expert Buffer Designer. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | Pass | Expert Buffer Designer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/pass-code-property/id1469360044/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/expert-buffer-designer/id6739745588/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Monetization | **Free** | Ad-supported |
| Size | 24 MB | 26 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tritium Studios LLC](https://appshunter.io/developer/385805798) | [Bioprocess Tools LLC](https://appshunter.io/developer/1786829896) |

## What reviewers say

### Pass

[App page](https://appshunter.io/ios/app/pass-code-property/id1469360044)

This app helps field service professionals prove their arrival at a job site. It uses NFC to quickly scan into properties and record work completion. A Pass-Code account is required to use the service.

**Highlights:** NFC property scanning, Record work completion, Simple interface, Field service proof

**Features:** macOS Compatibility

**In-app purchases:** none


### Expert Buffer Designer

[App page](https://appshunter.io/ios/app/expert-buffer-designer/id6739745588)

This application helps scientists and lab professionals design and analyze buffer solutions with a pH calculator and real-time feedback. It offers comprehensive buffer selection, variability analysis, and dynamic pH adjustment for precise results.

**Highlights:** Comprehensive buffer selection with sensitivity visualization, Instant variability analysis with heat map, Detailed compound and ion insights, Dynamic pH adjustment with real-time feedback, Personalized buffer library, Multi-platform availability (iOS, iPad, Mac)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pass free?

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

### Is Expert Buffer Designer free?

Expert Buffer Designer is free to download, with no in-app purchases.

### Which has better reviews, Pass or Expert Buffer Designer?

Pass and Expert Buffer Designer are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Pass or Expert Buffer Designer have ads?

Expert Buffer Designer shows ads; Pass does not.

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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.*