Comparison

i Sound Level Meter vs Wind Triangle

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

Head to head
About

i Sound Level Meter

Measure the noise levels around you with this sound meter. Track maximum and minimum decibel values during your measurements. For the most accurate readings, consider using a high-performance noise meter.

Highlights
  • Measures ambient noise levels
  • Tracks maximum noise values
  • Tracks minimum noise values
  • Displays noise measurements
Features
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The noise meter (noise measuring aparatus). There may be an error of measurement for each smart phone. You can measure how much noise around him. You can check the maximum and minimum values ​​to start You noise measurements. It is recommended to use a high-performance noise meter for accurate noise measurement.

About

Wind Triangle

Features
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Calculate heading and ground speed for flight planning, wind speed and direction for in-flight wind assessment, or any other parameter in the aviation wind triangle! Whether you need an easy wind solver for flight planning or you're a student pilot learning the ins and outs of the E6B wind side, this app makes solving the wind triangle intuitive and easy. With the in-flight wind assessment (GPS-enabled devices only), the app uses GPS and heading to automatically calculate the current wind at your altitude by just inputting your TAS or CAS with conditions. This brings integrated flight deck capabilities to your aircraft with a readout of your current head/tail- and crosswind components. Inputs supported: heading, true airspeed, ground speed, track, wind direction, wind speed. Input any four parameters and the app calculates the rest. Calibrated airspeed (CAS) may be set instead of TAS. Inputting CAS prompts you to set barometric setting, indicated altitude, and outside air temperature (OAT). From this, TAS, pressure altitude, and density altitude are calculated. Try GPS mode (supported devices only) on the ground by enabling the GPS Demo Mode option.

Screenshots

i Sound Level Meter2 screens
Wind Triangle2 screens

Verdict

The call

The clearest difference is price: i Sound Level Meter at Free against Wind Triangle's $2.99. i Sound Level Meter also leads on iOS requirement (13.0 vs 17.6). Wind Triangle's advantage is ads (none vs shown). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

i Sound Level Meter is free to download; Wind Triangle costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

Scorecard3 real differences · 7 level
i Sound Level Meter versus Wind Triangle: the parameters behind the verdict, then further details
Parameteri Sound Level MeterWind Triangle
PriceFree — better$2.99
Rating4.4 (38 ratings) — better—
Positive reviews22.0% of reviews—
Number of ratings38 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.0 — better17.6
Further details — not scored
Size7 MB1 MB
Age rating4+4+
DeveloperEONSOFTSmall Aviation Tools

In-app purchases

None

i Sound Level Meter

No in-app purchases

None

Wind Triangle

No in-app purchases

Questions

Is i Sound Level Meter free?
i Sound Level Meter is free to download, with no in-app purchases.
Is Wind Triangle free?
Wind Triangle costs $2.99, with no in-app purchases.
Do i Sound Level Meter or Wind Triangle have ads?
i Sound Level Meter shows ads; Wind Triangle does not.
Which is updated more often, i Sound Level Meter or Wind Triangle?
i Sound Level Meter ships an update every 2 months, and Wind Triangle every 2 months. Most recently, i Sound Level Meter was updated on October 24, 2026 and Wind Triangle on October 17, 2026.

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