Quantum Converter vs VibraLens
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Quantum Converter
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Quantum Converter redefines how you calculate and compare values. Designed to eliminate the constant back-and-forth of switching between menus, it gives you a complete, high-level perspective of your data all on a single screen. The Quantum Advantage: All Units At A Glance Traditional converters only give you one answer at a time. Quantum Converter changes the game with the Cross-Reference Ledger. When you select a category and enter a single value, the app instantly computes and displays every relevant unit variation simultaneously. Input 1 Meter, and instantly view everything from micrometers and centimeters to yards, miles, and feet on one clean layout. Powerful Built-In Tools Comprehensive Unit Converter: Cover everything from Length, Weight, and Mass to specialized technical units with real-time, simultaneous results. Quantum Age Calculator: Break down time like never before. See your lifetime breakdown tracked down to the exact years, months, weeks, days, hours, minutes, and seconds. Secured Digital Ledger: Save your vital conversions, calculations, or weight metrics locally. Search, filter, and track your history across multiple sectors offline. Key Features: Simultaneous Multi-Value Display: No more dropdown scrollingβsee all equivalent units immediately. Offline First: Your data is securely recorded locally in your personal ledger without requiring cloud accounts. Clean, Modern Interface: Designed with a premium aesthetic that makes complex calculations easy on the eyes. Lightweight & Fast: Experience zero-lag calculations that update instantly as you type. Whether you are a professional tracking logistics, a engineer analyzing dimensions, a student handling complex math, or just someone looking for a better utility tool, Quantum Converter streamlines your workflow. Download Quantum Converter today and see your calculations from every angle!
VibraLens
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Point your iPhone at a running machine and see its vibration: a live color overlay shows WHERE it shakes, and a readout shows how fast, in Hz. No sensors to mount, no contact, no cables. VibraLens measures through the camera, from a distance. WHAT YOU SEE VibraLens processes high-frame-rate video (up to 240 fps) in real time and paints a frequency-colored overlay directly on the camera image. Anything moving periodically lights up in the color of its frequency, so you can see at a glance which part of a machine, mount, panel, or pipe is vibrating β and at what rate. A live readout tracks the dominant frequency in Hz, and the RPM equivalent is one mental step away: 60 Hz = 3,600 RPM. WHO USES IT β’ HVAC techs β spot a wobbling blower wheel or an out-of-balance condenser fan before pulling a panel, then confirm the fix afterward. β’ Maintenance techs and engineers β find WHERE the vibration lives on a motor, pump, or gearbox: the frame, the coupling side, a mounting foot, a loose guard. β’ Home and property inspectors β document a shaking furnace blower or a buzzing duct with an evidence video, legend and frequency readout burned in. β’ Machine shops β sanity-check a spindle or a belt-driven speed by its frequency signature. β’ Serious DIY β figure out why the washing machine walks across the floor, which ceiling fan blade wobbles, whether the pool pump runs rough, or what speed the bench grinder really turns. FEATURES β’ Live frequency-colored overlay: see where periodic motion is happening β’ Dominant-frequency readout in Hz β reliable band roughly 8β115 Hz (about 480β6,900 RPM equivalent) β’ Records evidence video with the color legend and readout burned in, ready to share with a client or a work order β’ LO/HI band filters and a sensitivity threshold to isolate the motion you care about β’ Mains flicker rejection for 50/60 Hz lighting β’ Built-in torch control for dim mechanical rooms β’ Works at a distance β you never touch or attach anything to running machinery HONEST LIMITS β READ BEFORE BUYING VibraLens measures frequency, not amplitude. It will not give you mm/s, mils, severity grades, or go/no-go verdicts. Its reliable band is roughly 8β115 Hz; faster vibration is beyond what a phone camera can resolve. It needs light β it cannot see in darkness. It is a screening and troubleshooting aid, not a replacement for a calibrated contact instrument or a certified inspection. And never attach your phone to machinery β the entire point of VibraLens is that you don't have to. PRIVACY 100% on-device processing. No account, no sign-up, no analytics, no tracking, no ads. Your video never leaves your iPhone unless you choose to share it. PRICE One-time purchase. No subscription, no in-app purchases, no upsells. Buy it and use it for years. Requires an iPhone with iOS 16.6 or later. Best results with the target reasonably lit and the phone held steady or braced. Questions or ideas? support@vibralens.example β or see vibralens.example for demo videos, including a live sweep from 8 to 99 Hz on an oscillating tool.
Screenshots
Verdict
The clearest difference is device support: Quantum Converter at 3 against VibraLens's 1. Quantum Converter also leads on iOS requirement (13.0 vs 16.6). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Quantum Converter | VibraLens |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 13.0 β better | 16.6 |
| Further details β not scored | ||
| Size | 21 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Shafaqat Ali | BRADLEY LEWIS GRUBBS |
In-app purchases
Quantum Converter
No in-app purchases
VibraLens
No in-app purchases
Questions
Is Quantum Converter free?
Is VibraLens free?
Do Quantum Converter or VibraLens have ads?
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