# SimpleFFT vs TCI Bitacora

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.

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

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

## The numbers

| Metric | SimpleFFT | TCI Bitacora |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Fortnightly** |
| Size | 5 MB | 45 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [Armando Montellano](https://appshunter.io/developer/1455567990) |

## What reviewers say

### SimpleFFT

[App page](https://appshunter.io/ios/app/simplefft/id1239257017)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Functions | $0.49 | one-time |


### TCI Bitacora

[App page](https://appshunter.io/ios/app/tci-bitacora/id1464209780)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*