Comparison

SimpleFFT vs WindPower Business

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

Head to head
About

SimpleFFT

Features
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This app can easily analyze the frequency of sound. For the sound of the recording file recorded at each refresh time interval, FFT is executed and displayed for the four voices collected one after another at each refresh interval.

About

WindPower Business

Features
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WindPower Business is the professional platform for companies in the wind energy industry. With access to nearly all major wind turbines worldwide, the app supports job planning, fast access to turbine information and structured documentation of work directly at the turbine. FEATURES โ€ข Global turbine database with nearly all major wind turbines โ€ข Internal turbine history visible only to your organisation โ€ข Check in and check out directly at the turbine โ€ข 14 day weather forecast with hourly updates โ€ข Direct access to location data and map view โ€ข Search for hotels, hospitals, supermarkets and workshops near turbines โ€ข Structured job and documentation management for technicians โ€ข Privacy compliant and isolated within your organisation IMPORTANT WindPower Business is intended exclusively for companies and their employees. The app is not a public community platform. Company data is strictly separated and cannot be accessed by other organisations. Ideal for โ€ข Service companies โ€ข Operators โ€ข Project developers โ€ข Maintenance teams โ€ข Technical managers Reduce search times, prevent information loss and bring more structure to your wind turbine documentation.

Screenshots

SimpleFFT4 screens
WindPower Business4 screens

Verdict

The call

The clearest difference is in-app purchases: WindPower Business at none against SimpleFFT's 1. WindPower Business also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 18 months). SimpleFFT's advantage is iOS requirement (15.0 vs 18.6). On price and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. SimpleFFT sells 1 one-off in-app purchase. WindPower Business asks for nothing beyond the download.

UpkeepUpdate frequency

SimpleFFT ships an update every 18 months, WindPower Business every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard4 real differences ยท 2 level
SimpleFFT versus WindPower Business: the parameters behind the verdict, then further details
ParameterSimpleFFTWindPower Business
PriceFreeFree
Update frequencyEvery 18 monthsEvery 3 weeks โ€” better
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better18.6
Further details โ€” not scored
Size5 MB9 MB
Age rating4+4+
DeveloperHIROFUMI MARUOrainbow-learning-software

In-app purchases

1 purchases

SimpleFFT

One-time1
  • Premium Functions$0.49
None

WindPower Business

No in-app purchases

Questions

Is SimpleFFT free?
SimpleFFT is free to download, with in-app purchases available.
Is WindPower Business free?
WindPower Business is free to download, with no in-app purchases.
Do SimpleFFT or WindPower Business have ads?
SimpleFFT shows ads; WindPower Business does not.
Which is updated more often, SimpleFFT or WindPower Business?
SimpleFFT ships an update every 18 months, and WindPower Business every 3 weeks. Most recently, SimpleFFT was updated on November 2, 2026 and WindPower Business on October 31, 2026.

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