Comparison

Convert vs VibraTestPro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Convert

Easily convert hundreds of physical units and dimensions with this powerful tool. It also includes a currency converter with daily updated exchange rates for over 130 countries and is available on Apple Watch.

Highlights
  • Unit conversion for 398 units
  • Currency conversion with daily rates
  • Integrated calculator
  • Apple Watch support
  • History charts for currencies
  • Copy & Paste functionality
Features
Read full description

A simple but powerful unit converter. Translates hundreds of physical units and dimensions quickly and easily. The currency converter features daily updated exchange rates for over 130 countries. CUSTOMER REVIEWS: 4½ (over 1000 reviews world wide) *** Apple Watch *** We bring the converter including currency exchange rates to your Apple Watch. Convert units and currencies directly on your watch. TOP FEATURES: ▶ Intuitive and efficient user interface ▶ A total of 398 units in 17 categories ▶ Shoe size conversion ▶ Calculator ▶ Daily updated currency converter ▶ History charts for all currencies ▶ Push notifications for currencies ▶ Univeral iPhone/iPad app ▶ Landscape support for iPad ▶ Copy & Paste ▶ Drag'n Drop your favorites to the toolbar ▶ Frequent free updates CATEGORIES: ▶ Currency ▶ Length ▶ Weight ▶ Temperature ▶ Speed ▶ Energy ▶ Angle ▶ Pressure ▶ Time ▶ Volume ▶ Area ▶ Power ▶ Data ▶ Torque ▶ Radioactivity ▶ Fuel consumption ▶ Force ▶ Shoe size ▶ Calculator Available upgrades with subscriptions: * 'Advanced features': $0.99 per 6 months No ADs, Currency Exchange Rates, Charts - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. Privacy policy: https://www.bitcommander.ch/privacy-policy Terms of use: https://www.bitcommander.ch/terms-of-use-convertit

About

VibraTestPro

Features
Read full description

VibraTestPro is a vibration analysis tool on iPhone/iPad. It reads vibration signal from Motionics single channel accelerometer. VibraTestPro features ISO10816 based vibration meter, FFT spectrum viewer, vibration signal recorder and route base vibration data manager. NOTE: this App needs Motionics single channel accelerometer to operate. Please contact Motionics for hardware information. VibraTestPro now supports VibeSense wireless accelerometer. VibraTestPro now supports torsional vibration analysis on iPad. ISO10816 Based Vibration Meter • Severity test based on ISO10816-3 standard or custom thresholds • Interactive ISO 10816 vibration severity table • Enlarged severity bar with 4 color zones for better view • Velocity and acceleration RMS • Metric and Imperial units option • Machine type and support type selections • RMS data save to route base data manager FFT Spectrum Viewer • Waveform and FFT Spectrum • Pinch and pan to zoom and move spectrum • Auto peak marker and manual marker • Acceleration signal and velocity signal • Metric and Imperial units option • Peak information • Overall RMS • Dynamic X and Y grids • Distance cursor • Harmonic cursor • Sideband cursor Vibration Data Recorder • Vibration raw signal recording • User defined recording sampling rate • Recording manual or auto stop • Recorded data exporting in CSV file or WAV file via AirDrop, Email, Dropbox • Recorded data save to route base data manager Route Base Data Manager • Plant-Machine-Measurement Point-Measurement Record structure • Save image to record • Add note to record • View RMS value if record is saved from vibration meter • Export vibration raw data if record is saved from data recorder • Offline spectrum • Export FFT value

Screenshots

Convert4 screens
VibraTestPro4 screens

Verdict

The call

The clearest difference is price: Convert at Free against VibraTestPro's $699.99. VibraTestPro's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Convert is free to download; VibraTestPro costs $699.99 up front. Convert sells 2 in-app purchases, starting at $0.99 per 6 months. VibraTestPro asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
Convert versus VibraTestPro: the parameters behind the verdict, then further details
ParameterConvertVibraTestPro
PriceFree — better$699.99
Rating4.7 (126 ratings) — better—
Positive reviews69.8% of reviews—
Number of ratings126 — better—
Update frequencyEvery 3 monthsEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size39 MB24 MB
Age rating4+4+
DeveloperRaphael OdermattMotionics LLC

In-app purchases

2 purchases

Convert

Subscriptions1
  • Advanced Features3 Days trial$0.996 Months
One-time1
  • Advanced Features$1.99
None

VibraTestPro

No in-app purchases

Questions

Is Convert free?
Convert is free to download, with in-app purchases available.
Is VibraTestPro free?
VibraTestPro costs $699.99, with no in-app purchases.
Do Convert or VibraTestPro have ads?
Convert shows ads; VibraTestPro does not.
Which is updated more often, Convert or VibraTestPro?
Convert ships an update every 3 months, and VibraTestPro every 3 months. Most recently, Convert was updated on November 11, 2026 and VibraTestPro on November 6, 2026.

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