Merseyflow Quick Pay vs Process Capability Calculator
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Merseyflow Quick Pay
Manage your toll road accounts and payments easily. Register for discounts, set up automatic payments, and pay for single crossings. Offers options for pre-pay and pay-as-you-go accounts.
- Manage accounts and payment plans
- Apply for discount schemes
- Set up pay-as-you-go accounts
- Pay for one-off crossings
- Register for discounts
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Top reasons to download the merseyflow App: - Whether you have a pre-pay or a pay-as-you-go account, you can use either the merseyflow website or the app to register for discounts, manage your accounts or use a pay-as-you-go option. - The enhanced app allows customers to use either the merseyflow website or app to: - Register, update and manage your account and payment plans directly. - Apply for discount schemes (save up to 10%), including the Local User Discount Scheme (LUDS) and the Blue Badge Holder scheme. - Set up a pay-as-you-go account, where there are no discounts, but payment can automatically be taken from a bank account without having a pre-pay merseyflow account. - Pay for one-off crossings.
Process Capability Calculator
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Know if your process is really capable. Cp, Cpk, Pp, Ppk, control charts, and SPC: built for the shop floor, but equally at home at your desk. Free to use for as long as you want: type in your readings by hand, or try the built-in example data, and see full, real results. Verify it against your own known data before you ever need to unlock anything. The Process Capability Calculator app works out Cp, Cpk, Pp, and Ppk correctly and keeps them properly distinct, runs full I-MR control charts with 15 SPC diagnostic rules, and tests your data for normality. Results also show sigma within and overall, DPMO, predicted failure rate, and a histogram of your readings. Everything is explained in plain language, not left as a number you have to trust blindly, including a guide to how many readings you really need. Capture readings the way that actually suits the moment. Typing by hand is free. One unlock, with no subscription, reduces your typing: Speak the data aloud Scan printed data with your camera Read a live machine display directly, in real time The same unlock adds PDF reports, CSV export, and saved run history. Built to work on your device. No account, no servers, and no data collected by the app. Calculations, charts and scanning need no internet connection, and speech recognition runs on your phone wherever your device supports it. Your camera, microphone, and readings are yours alone, and a report leaves your phone only if you choose to share it. Honest about its own limits. Low-confidence scans get flagged for you to double-check, a reminder shows until you have 30 readings because a result from a handful of parts can't be fully trusted, and a result gets visibly marked VOID if it looks statistically good but the process is actually out of spec, out of control, or non-normal. A novice shouldn't be able to mistake a misleading number for a trustworthy one. Built by a quality engineer with 35 years in automotive manufacturing, out of a genuine gap: getting a fast, trustworthy capability check on the shop floor was harder than it should be. This is the tool I wished I had. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Merseyflow Quick Pay at none against Process Capability Calculator's 1. Merseyflow Quick Pay also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Process Capability Calculator sells 1 one-off in-app purchase. Merseyflow Quick Pay asks for nothing beyond the download.
Merseyflow Quick Pay ships an update fortnightly, Process Capability Calculator every 2 weeks. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.
| Parameter | Merseyflow Quick Pay | Process Capability Calculator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 3.5% of reviews | โ |
| Update frequency | Fortnightly โ better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | Free | โ |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 16.6 |
| Further details โ not scored | ||
| Size | 149 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | EMOVIS OPERATIONS MERSEY LTD | Steven Greenwood |
Bugs and requests
Merseyflow Quick Pay
Reported bugs
18 issues- App crashes on splash screen or logo display
- Login fails with correct credentials
- Password validation differs between app and website
- Cannot add or update card details - error occurred while executing request
- Email verification codes not being sent
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- Autopay stops working after updates
- False notifications about crossings and payments
- White screen on app launch
- App freezes during payment processing
- 3D Secure authentication fails repeatedly
- Registration number not recognized despite being in system
- Account details not syncing between app and website
- Cannot add crossings - price must be greater than 0 error
- App not compatible with iPhone 7 and older models
- Duplicate charge attempts when retrying failed payments
- Password reset emails not arriving
- Account lockouts with no recovery option
- Form fields not rendering properly on mobile
Requested features
14 requests- Apple Pay and Google Pay integration
- Multiple vehicle registration per account
- Push notifications for crossings and payment reminders
- Transaction history and receipt tracking
- Password autofill and biometric authentication
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- Postcode lookup for address entry
- Account balance visibility before payment
- VAT receipts for business expense claims
- Unified login between app and website
- Real-time crossing notifications
- Ability to view and dispute penalty charge notices (PCNs)
- Direct payment option without pre-payment requirement
- Offline functionality or cached data
- Better error messages with solutions
Process Capability Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Merseyflow Quick Pay
No in-app purchases
Process Capability Calculator
- Unlock Full Version$2.99




