Comparison

Blue Switch vs BLE SPP

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

Head to head
About

Blue Switch

Control 2, 4, or 8 channel Bluetooth BLE relay modules from your iPhone or iPad. Assign custom names to modules and individual relays for easy identification and management. Enhance security by changing the default password.

Highlights
  • Control 2, 4, or 8 channel relay modules
  • Bluetooth BLE connectivity
  • Assign custom module aliases
  • Assign custom relay aliases
  • Change default password for security
  • Connect to multiple modules
Features
Read full description

This app allows you to control a 2, 4 or 8 Channel Relay Module Bluetooth BLE with your iPhone or iPad. To use this app, you need one of these three modules: "2 Channel Relay Module Bluetooth BLE" "4 Channel Relay Module Bluetooth BLE" "8 Channel Relay Module Bluetooth BLE" These modules can be ordered at many online shops. Please use a search engine to find a shop. This app can be connected with any number of modules. By entering an alias, the modules are marked clearly and can easily be assigned to a use area. Name the modules for example "Relay 1", "Relay 2", "Electronic lab project" or "Ambient Light". An alias can also be entered for each relay. The default password for these modules is usually "12345678". For more security, the app also allows you to change the password. The password must be eight digits long.

About

BLE SPP

Features
Read full description

Es gibt für Bluetooth Low Energy kein Standard Profile, welches die Übertragung von Daten wie z.B. mit dem Serial Port Profile beim klassischen Bluetooth unterstützt. Dies ist jetzt mit dem eigens hierfür entwickelten Lintech BLE SPP Profile möglich. Mit dieser App kann man eine serielle Datenverbindung über Bluetooth Low Energy zu Geräten aufbauen, die das LinTech SPP Profile unterstützen: - LinTech Bluetooth Low Energy RS232 Datenadapter - LinTech Bluetooth Low Energy USB Datenadapter - LinTech Bluetooth Low Energy SPP Testboard - LinTech BLE Module mit SPP Profile Die App kann Zeichen im ASCII/HEX Format, Kommandos oder einstellbare Byte-Blöcke zur Gegenstelle senden oder empfangen. Die ausgehenden Daten sind Schwarz, die eingehenden Daten sind in Magenta dargestellt. 1) Starten Sie die App und klicken Sie auf "Scan" um nach Lintech BLE SPP Geräten zu suchen 2) Wählen Sie aus der Liste das Gerät aus mit dem Sie sich verbinden möchten 3) Werden Sie aufgefordert sich mit dem Gerät zu koppeln, geben Sie den geforderten Passkey ein, da sonst keine Kommunikation möglich ist 4) Ist die Verbindung hergestellt, können Sie die Datenkommunikation testen Um die App sinnvoll nutzen zu können, ist es wichtig die Gegenstelle so zu verwenden, dass ankommende Daten auch gesehen werden. Sie können z.B. ein Terminal Programm verwenden, welches auf den Com-Port zugreift, an welchen das BLE SPP Gerät angeschlossen ist und so die Datenkommunikation verfolgen. Die App empfängt und versendet die Daten auch wenn Sie im Hintergrund läuft.

Screenshots

Blue Switch4 screens
BLE SPP2 screens

Verdict

The call

The clearest difference is in-app purchases: BLE SPP at none against Blue Switch's 1. BLE SPP also leads on ads (none vs shown) and iOS requirement (12.2 vs 18.0). 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. Blue Switch sells 1 one-off in-app purchase. BLE SPP asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 7 level
Blue Switch versus BLE SPP: the parameters behind the verdict, then further details
ParameterBlue SwitchBLE SPP
PriceFreeFree
Rating3.8 (43 ratings) — better
Positive reviews16.7% of reviews
Number of ratings43 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.012.2 — better
Further details — not scored
Size39 MB49 MB
Age rating4+4+
DeveloperVitalij SchaeferLinTech

In-app purchases

1 purchases

Blue Switch

One-time1
  • Remove Ads$17.99
None

BLE SPP

No in-app purchases

Questions

Is Blue Switch free?
Blue Switch is free to download, with in-app purchases available.
Is BLE SPP free?
BLE SPP is free to download, with no in-app purchases.
Do Blue Switch or BLE SPP have ads?
Blue Switch shows ads; BLE SPP does not.
Which is updated more often, Blue Switch or BLE SPP?
Blue Switch ships an update every 3 months, and BLE SPP every 3 months. Most recently, Blue Switch was updated on September 23, 2026 and BLE SPP on September 10, 2026.

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