# Watchlog Bluetooth vs SECA

The clearest difference is review sentiment: Watchlog Bluetooth at 100% against SECA's 25%. SECA's advantage is update cadence (monthly vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Watchlog Bluetooth ships an update every 2 months, SECA monthly. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Watchlog Bluetooth | SECA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (4 ratings)](https://appshunter.io/ios/app/seca/id6502897162/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 25 MB | 86 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hydrotechnik UK Test Engineering Ltd](https://appshunter.io/developer/1515531717) | [上海铭控传感技术有限公司](https://appshunter.io/developer/1687248200) |

## What reviewers say

### Watchlog Bluetooth

[App page](https://appshunter.io/ios/app/watchlog-bluetooth/id6479214506)

This application facilitates Bluetooth connections for data collection from specific sensors. It is designed to work seamlessly with Hydrotechnik sensors, enabling efficient data transfer and management.

**Highlights:** Bluetooth connectivity, Hydrotechnik sensor support, Data collection, Data management

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

**In-app purchases:** none


### SECA

[App page](https://appshunter.io/ios/app/seca/id6502897162)

This utility app allows users to switch sensor units and display units, export data to Excel, and load real-time data curves. It also enables reading data and modifying configuration parameters in real time.

**Highlights:** Switch sensor units, Export data to Excel, Switch display units, Load real-time data curves, Modify configuration parameters

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

**In-app purchases:** none


## Frequently asked questions

### Is Watchlog Bluetooth free?

Watchlog Bluetooth is free to download, with no in-app purchases.

### Is SECA free?

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

### Do Watchlog Bluetooth or SECA have ads?

Neither Watchlog Bluetooth nor SECA shows ads.

### Which is updated more often, Watchlog Bluetooth or SECA?

Watchlog Bluetooth ships an update every 2 months, and SECA monthly. Most recently, Watchlog Bluetooth was updated on September 23, 2026 and SECA on September 21, 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.*