Credit Scanner vs HPU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Credit Scanner
Scan SIM card recharge vouchers using your device's camera. This utility app automatically reads the serial number, saving you manual entry time. It supports all mobile carriers and is compatible with iOS 12.1 and newer devices.
- Camera-based scanning
- Automatic serial number reading
- Supports all carriers
- iOS 12.1+ compatibility
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This app helps you quickly recharge your SIM card. The app uses your camera to scan the serial number on your credit voucher. It works with all carriers, and is available for iOS 12.1 and above.
HPU
This app provides fluid power engineers with essential formulas and calculators in a retro CRT terminal interface. It offers tools for cylinders, pumps, motors, vehicle drive sizing, fluids, and thermal calculations, with unit conversion and formula references. It works offline and requires no account.
- 21 live calculators for fluid power engineering
- US and metric unit switching
- Cylinder, pump, and motor calculations
- Vehicle drive sizing worksheet
- Fluid and thermal calculations
- Unit converter and formula reference
- Offline functionality
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THE FLUID POWER TERMINAL. HPU-9000 packs the formulas fluid power engineers actually use into a phosphor-green CRT terminal — 21 live calculators, with every input and output switchable between US and metric units. CYLINDERS — bore/annulus area, push & pull force, stroke speed and time, return-line flow intensification, cylinder power, tube sizing with velocity guidance, air cylinder consumption. PUMPS & MOTORS — pump flow, hydraulic power and drive power required, motor torque and speed (theoretical vs. actual), torque⇄power, efficiency. VEHICLE DRIVE SIZING — a guided hydrostatic-drive worksheet: rolling and grade resistance, tractive effort, wheel and motor torque, traction check that warns before your wheels spin, motor RPM. Save machines by name and reload them at the bench. FLUIDS & THERMAL — oil volume, compressibility, fluid weight, SUS⇄cSt viscosity, reservoir heating, heat load vs. cooling balance, pump bearing life. PLUS — a full unit converter and the complete formula reference. Engineering-grade: every formula is computed from exact physical constants, not rounded shop approximations, and verified against an automated test suite. Green or amber phosphor. Scanlines optional. No account, no ads, works offline — like a good terminal should.
Screenshots
Verdict
The clearest difference is ads: HPU at none against Credit Scanner's shown. HPU also leads on monetization model (free vs ad-supported) and ratings volume (4 vs 1). Credit Scanner's advantage is iOS requirement (12.1 vs 18.0). On price, rating, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 Credit Scanner against 5.0 for HPU. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
| Parameter | Credit Scanner | HPU |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 2 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 52 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Linus Karlsson | LOBOZ LLC |
Customer experience
Credit Scanner
HPU
In-app purchases
Credit Scanner
No in-app purchases
HPU
No in-app purchases
