Comparison

SimpleFFT vs TCI Bitacora

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

Head to head

Frequency analysis

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

TCI Bitacora

Features

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INTERFAZ AMIGABLE Esta aplicación permite reportar tus actividades durante el transcurso del día mediante una sencilla e intuitiva interfaz (UI) REPORTE SUS ACTIVIDADES Permite consultar las actividades que diste de alta en la plataforma y estas serán guardadas en tu agenda para posteriormente registrar tus reportes de cada una de ellas, ademas podrás incluir una fotografía en tus reportes. La aplicación esta diseñada para poder realizar reportes sin conexión a Internet, estos se almacenan en el dispositivo de manera temporal y una ves que se cuenta con conexión, se reportan las incidencias.

Screenshots

SimpleFFT4 screens

TCI Bitacora4 screens

Verdict

The call

The clearest difference is in-app purchases: TCI Bitacora at none against SimpleFFT's 1. TCI Bitacora also leads on ads (none vs shown) and update cadence (fortnightly vs every 18 months). On price 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

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

UpkeepUpdate frequency

SimpleFFT ships an update every 18 months, TCI Bitacora fortnightly. The most recent releases landed on August 28, 2026 and September 16, 2026 respectively.

Scorecard4 real differences · 2 level

SimpleFFT versus TCI Bitacora: the parameters behind the verdict, then further details
Parameter	SimpleFFT	TCI Bitacora
Price	Free	Free
Update frequency	Every 18 months	Fortnightly — better
Ads	Yes	No — better
In-app purchases	Yes	No — better
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0	11.0 — better
Further details — not scored
Size	5 MB	45 MB
Age rating	4+	4+
Developer	HIROFUMI MARUO	Armando Montellano

In-app purchases

1 purchases

SimpleFFT

One-time1

Premium Functions$0.49

None

TCI Bitacora

No in-app purchases

Questions

Is SimpleFFT free?

SimpleFFT is free to download, with in-app purchases available.

Is TCI Bitacora free?

TCI Bitacora is free to download, with no in-app purchases.

Do SimpleFFT or TCI Bitacora have ads?

SimpleFFT shows ads; TCI Bitacora does not.

Which is updated more often, SimpleFFT or TCI Bitacora?

SimpleFFT ships an update every 18 months, and TCI Bitacora fortnightly. Most recently, SimpleFFT was updated on August 28, 2026 and TCI Bitacora on September 16, 2026.