# PayTix vs HPLC Advisor

The clearest difference is rating: HPLC Advisor at 4.0 against PayTix's 1.4. HPLC Advisor also leads on review sentiment (50% vs 10%). PayTix's advantage is ratings volume (332 vs 2). On price, update cadence, ads 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.

HPLC Advisor holds the better App Store score, 4.0 against 1.4. That said, the two scores are not equally well evidenced: PayTix has 332 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 10% of PayTix's written reviews are positive against 50% of HPLC Advisor's.

PayTix ships an update every 4 months, HPLC Advisor every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | PayTix | HPLC Advisor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.4 (332 ratings)](https://appshunter.io/ios/app/paytix/id934038301/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/hplc-advisor/id1566882318/reviews)** |
| Number of ratings | **332** | 2 |
| Positive reviews | 10.2% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 2 MB | 24 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Modaxo Traffic Management USA Inc.](https://appshunter.io/developer/1778050655) | [Agilent Technologies, Inc](https://appshunter.io/developer/355827609) |

## What reviewers say

### PayTix

[App page](https://appshunter.io/ios/app/paytix/id934038301)

Pay parking tickets securely and easily through a mobile app. It offers a simple payment process, ticket reminders, and a history of your payments. The app is free to download and use, with potential convenience fees applied by member cities.

**Highlights:** Simple ticket payment process, Barcode scanning for ticket numbers, Payment reminders and alerts, Secure payment gateway, Ticket history management

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and fast payment processing
- 👍 Simple and straightforward user interface
- 📧 Email confirmation receipt provided
- ⏱️ Faster than website payment option
- ✅ Successfully processes payments when working

**What reviewers complain about**

- 🐛 Displays error messages despite successful charges
- 🔒 Appears insecure and sketchy for credit card input
- 📱 Outdated UI design from 2010-2013 era
- 💳 Charges unexpected convenience fees (2-8%)
- ❌ Fails to recognize valid payment cards

**Reported bugs**

- Payment shows error but card is charged anyway
- Multiple charges for single transaction attempts
- Barcode scanning produces incorrect ticket numbers
- QR code scanning fails to populate information
- Ticket lookup by violation number fails intermittently

**Requested features**

- Modern UI redesign for current devices
- Lookup and pay multiple tickets simultaneously
- Save personal information for future transactions
- Ability to view and verify card information before submission
- Apple Pay and digital wallet integration


### HPLC Advisor

[App page](https://appshunter.io/ios/app/hplc-advisor/id1566882318)

This app provides tools for HPLC troubleshooting, method development, and data management. It offers calculators for method translation and performance prediction, a data library with conversions and formulas, and troubleshooting guides. Works offline for all HPLC instruments.

**Highlights:** HPLC troubleshooting guides, Method translation calculator, Chromatographic performance calculator, LC-related data library, Offline functionality, Universal instrument compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PayTix free?

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

### Is HPLC Advisor free?

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

### Which has better reviews, PayTix or HPLC Advisor?

HPLC Advisor is rated higher. PayTix averages 1.4 out of 5 from 332 ratings, while HPLC Advisor averages 4.0 from 2 ratings.

### Do PayTix or HPLC Advisor have ads?

Neither PayTix nor HPLC Advisor shows ads.

### Which is updated more often, PayTix or HPLC Advisor?

PayTix ships an update every 4 months, and HPLC Advisor every 2 months. Most recently, PayTix was updated on October 24, 2026 and HPLC Advisor on October 24, 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.*