Comparison

Watchlog Bluetooth vs Spradow Logger

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

Head to head

Watchlog Bluetooth

Bluetooth Data Collection App

Bluetooth Sensor Monitor

Free

🔧 Utilities

No ratingsView app →

About

Watchlog Bluetooth

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

Read full description

Bluetooth connection app for use with Hydrotechnik sensors.

About

Spradow Logger

Features

Read full description

Spradow Logger allows users to connect to up to 4 compatible local pressure and/or temperature sensors to view and record live data and share saved data directly from their mobile device.

Screenshots

Watchlog Bluetooth4 screens

Spradow Logger4 screens

Verdict

The call

The clearest difference is update cadence: Spradow Logger at every 4 weeks against Watchlog Bluetooth's every 2 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Watchlog Bluetooth ships an update every 2 months, Spradow Logger every 4 weeks. The most recent releases landed on September 23, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 7 level

Watchlog Bluetooth versus Spradow Logger: the parameters behind the verdict, then further details
Parameter	Watchlog Bluetooth	Spradow Logger
Price	Free	Free
Positive reviews	100.0% of reviews	—
Update frequency	Every 2 months	Every 4 weeks — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	13.0	13.0
Further details — not scored
Size	25 MB	29 MB
Age rating	4+	4+
Developer	Hydrotechnik UK Test Engineering Ltd	Spradow GmbH & Co. KG

In-app purchases

None

Watchlog Bluetooth

No in-app purchases

None

Spradow Logger

No in-app purchases

Questions

Is Watchlog Bluetooth free?

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

Is Spradow Logger free?

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

Do Watchlog Bluetooth or Spradow Logger have ads?

Neither Watchlog Bluetooth nor Spradow Logger shows ads.

Which is updated more often, Watchlog Bluetooth or Spradow Logger?

Watchlog Bluetooth ships an update every 2 months, and Spradow Logger every 4 weeks. Most recently, Watchlog Bluetooth was updated on September 23, 2026 and Spradow Logger on September 30, 2026.