Comparison

Motorcycle Tyre Size Calc vs SpectralScan Audio Analyzer dB

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

Head to head
About

Motorcycle Tyre Size Calc

Features
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Motorcycle Tyre Size Calculator are used to find Tyre width, Aspect ratio, Construction type, Rim diameter, Speed rating and Load index of Motorcycle Tyre. Features: • Instant calculation. • Result is copying abilities to another app. • Reference are included. • Support for Dark Mode. • Tiny app that conserves storage space. • Work offline. • Lightweight app with a small size, optimized for everyday use. Motorcycle Tyre Size Designations: The motorcycle Tyre Code can be found on the tyre's sidewall with information about tyre: - Tyre width in mm. - Aspect ratio – ratio of height to width. - Rim diameter. - Construction type. - Load index - Maximum load capacity. - Speed rating - Maximum allowed speed. Same as four-wheeled vehicles, Tyres for motorcycle have a tyre code, which describes a tyre's width, height/width aspect ratio, wheel diameter, load index and speed rating. The most common code example are: 190/50 R 17 M/C (73 W) - 3 digit number: The "nominal section width" of the tyre in millimeter, the widest point from both outer edges. - / Slash character for character separation. - 2 or 3 digit number: The "aspect ratio" of the sidewall height to the total width of the tyre, as a percentage. - An optional letter indicating construction of the fabric carcass of the tyre: B: bias belt (where the sidewalls are the same material as the tread, leading to a rigid ride) D: diagonal R: radial -: cross ply tyre - 2 digit number: Diameter in inches of the wheel that the tyre is designed to fit. - M/C: Motorcycle Tyre - 2 or 3 digit number: Load index - 1 or 2 digit/letter combo: Speed rating This App works in both portrait and landscape mode on the iPad, and portrait mode on iPhone. The App also add support for Dark Mode. This App is a tiny app that conserves storage space and also work offline. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

SpectralScan Audio Analyzer dB

Transform your device into a professional audio analysis tool. Visualize sound in real-time with a high-resolution spectrum, perform precise sine sweep measurements, and analyze frequency content over time. Save, compare, and export your audio data.

Highlights
  • Real-time frequency spectrum visualization
  • Sine sweep measurements for system response
  • Spectrogram for time-frequency analysis
  • Comparison and overlay of multiple measurements
  • Export data as CSV or PNG
  • Pro features for advanced analysis
Features
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SpectralScan turns your phone into a professional audio analysis tool. Real-Time Analyzer (RTA) Visualize your acoustic environment live with a high-resolution frequency spectrum. Adjust smoothing, peak hold, and frequency range on the fly. Sine Sweep Measurements Run a precision sine sweep and capture the full frequency response and impulse response of any speaker, room, or audio system. Spectrogram Watch frequency content evolve over time with a scrolling waterfall display. Compare & Export Save multiple measurements, overlay them for comparison, and export as CSV or PNG. Pro features: multiple sweep measurements, fine octave smoothing, peak frequency display, and additional color themes and more coming.

Screenshots

Motorcycle Tyre Size Calc4 screens
SpectralScan Audio Analyzer dB4 screens

Verdict

The call

The clearest difference is price: SpectralScan Audio Analyzer dB at Free against Motorcycle Tyre Size Calc's $2.99. SpectralScan Audio Analyzer dB also leads on update cadence (every 9 days vs every 38 months). Motorcycle Tyre Size Calc's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 15.0). On ads 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

CostPrice · In-app purchases · Ads · Monetization

SpectralScan Audio Analyzer dB is free to download; Motorcycle Tyre Size Calc costs $2.99 up front. SpectralScan Audio Analyzer dB sells 1 one-off in-app purchase. Motorcycle Tyre Size Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Motorcycle Tyre Size Calc ships an update every 38 months, SpectralScan Audio Analyzer dB every 9 days. The most recent releases landed on September 11, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 5 level
Motorcycle Tyre Size Calc versus SpectralScan Audio Analyzer dB: the parameters behind the verdict, then further details
ParameterMotorcycle Tyre Size CalcSpectralScan Audio Analyzer dB
Price$2.99Free — better
Rating—4.9 (18 ratings) — better
Number of ratings—18 — better
Update frequencyEvery 38 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.0
Further details — not scored
Size1 MB16 MB
Age rating4+4+
DeveloperHeng Jia LiangOtsukare AB

In-app purchases

None

Motorcycle Tyre Size Calc

No in-app purchases

1 purchases

SpectralScan Audio Analyzer dB

One-time1
  • SpectralScan Pro$11.99

Questions

Is Motorcycle Tyre Size Calc free?
Motorcycle Tyre Size Calc costs $2.99, with no in-app purchases.
Is SpectralScan Audio Analyzer dB free?
SpectralScan Audio Analyzer dB is free to download, with in-app purchases available.
Do Motorcycle Tyre Size Calc or SpectralScan Audio Analyzer dB have ads?
Neither Motorcycle Tyre Size Calc nor SpectralScan Audio Analyzer dB shows ads.
Which is updated more often, Motorcycle Tyre Size Calc or SpectralScan Audio Analyzer dB?
Motorcycle Tyre Size Calc ships an update every 38 months, and SpectralScan Audio Analyzer dB every 9 days. Most recently, Motorcycle Tyre Size Calc was updated on September 11, 2026 and SpectralScan Audio Analyzer dB on October 28, 2026.

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