Comparison

SimpleFFT vs REF TEK Recorder Setup

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

Head to head

Frequency analysis

REF TEK Recorder Setup

Free

🔧 Utilities

No ratingsView app →

About

SimpleFFT

Features

Read full description

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

REF TEK Recorder Setup

Read full description

The REF TEK Seismic Recorder Setup app provides local command and control for the REF TEK Wrangler Portable Broadband High Resolution Seismic Recorder and the SMHR2 Integrated Seismic Recorder & Accelerometer. The REF TEK Seismic Recorder Setup app is used for configuring the REF TEK Wrangler and SMHR2 seismic recorders. Providing the user with full command and control of the unit, including control and configuration of all recorder parameters and real-time status. The Recorder Setup app also features a real-time data graph that allows users to quickly and easily check on how their sensor is working. This app talks to the Wrangler unit via WiFi connection.

Screenshots

SimpleFFT4 screens

REF TEK Recorder Setup4 screens

Verdict

The call

The clearest difference is in-app purchases: REF TEK Recorder Setup at none against SimpleFFT's 1. REF TEK Recorder Setup also leads on ads (none vs shown) and iOS requirement (8.2 vs 15.0). On price, update cadence 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. REF TEK Recorder Setup asks for nothing beyond the download.

UpkeepUpdate frequency

SimpleFFT ships an update every 18 months, REF TEK Recorder Setup every 12 months. The most recent releases landed on August 28, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 3 level

SimpleFFT versus REF TEK Recorder Setup: the parameters behind the verdict, then further details
Parameter	SimpleFFT	REF TEK Recorder Setup
Price	Free	Free
Update frequency	Every 18 months	Every 12 months — better
Ads	Yes	No — better
In-app purchases	Yes	No — better
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	15.0	8.2 — better
Further details — not scored
Size	5 MB	96 MB
Age rating	4+	4+
Developer	HIROFUMI MARUO	Xeos Technologies Inc.

In-app purchases

1 purchases

SimpleFFT

One-time1

Premium Functions$0.49

None

REF TEK Recorder Setup

No in-app purchases

Questions

Is SimpleFFT free?

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

Is REF TEK Recorder Setup free?

REF TEK Recorder Setup is free to download, with no in-app purchases.

Do SimpleFFT or REF TEK Recorder Setup have ads?

SimpleFFT shows ads; REF TEK Recorder Setup does not.

Which is updated more often, SimpleFFT or REF TEK Recorder Setup?

SimpleFFT ships an update every 18 months, and REF TEK Recorder Setup every 12 months. Most recently, SimpleFFT was updated on August 28, 2026 and REF TEK Recorder Setup on September 21, 2026.