Verify bolt preload in seconds with the Strainlabs App
The Strainlabs App reads Strainlabs Bolts on-site via Bluetooth and shows preload, temperature, proof load and battery status directly on your phone.
- Verify preload in seconds
- No gateway or setup
- Works offline
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Read on-site
Scan nearby Strainlabs Bolts via Bluetooth and see current status directly in your phone.

Store history in the bolt
Choose how long data is stored: 1, 5, 30, 90 or 300 days.

Customize the scan
Choose how long the app searches for nearby bolts: 1, 5, 15, 30 or 60 minutes.
Answers on-site, without extra equipment
During installation, service or inspection, you need the answer to one simple question: is the preload correct?
But getting that answer on-site is rarely straightforward. Traditional verification often requires separate equipment, calibration or access to systems that aren’t available where the work is done. At remote sites, in the field or during emergency service, it gets even harder. The result: checks take longer than they should, or don’t happen at all.
Strainlabs App displays preload in kilonewtons, directly in your phone, in seconds.
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measures and stores data inside the bolt
full bolt status in seconds
The cost of uncertainty
A bolted connection tightened incorrectly doesn’t start failing at the next inspection. It starts failing immediately – under load, in operation.
Too high preload wears down the material. Too low and it loses grip under vibration. And since no one has seen the actual level at assembly, the fault only shows when something has already gone wrong: a consequential failure, an unplanned stoppage, an inspection that came too late.
The same applies during service. When a check requires scaffolding, fall protection and connectivity, it becomes time-consuming – and is therefore performed less often than it should be.
The question isn’t whether you have time to verify your critical bolted connections. It’s whether you can afford not to.
Three problems, solved on-site
From “tighten and hope” to “scan and know”.
Correct assembly from the start. You see the actual preload the moment you tighten, not a torque value you hope corresponds to the right level. Right from the start, no unnecessary return visits.
Faster and safer inspections. Walk up to the bolted connection, start a scan and read the status on your phone. No wrench, no guesswork and less time in elevated or hard-to-reach locations.
Nothing to install. The app connects to the bolt via Bluetooth and works offline. No router, no network, no platform to set up. You get real data from day one — anywhere.
See the full status in seconds
Strainlabs App reads the Strainlabs Bolt via Bluetooth. You don’t need connectivity or an installed system, just your phone and the bolt.
In just a few seconds, you can see:
- Preload (in kN)
- Temperature
- Proof load
- Battery
- History and bolt information
How it works:
Strainlabs Bolt continuously measures preload and temperature and sends data to the app where it can be stored.
With the app, you can read the data on-site via Bluetooth and choose how long the history is stored: 1, 5, 30, 90 or 300 days.
App or Strainlabs Analytics?
Strainlabs App is the right choice when you want quick on-site checks. Walk up to the bolt, scan via Bluetooth and see status directly in your phone.
No router, no network and no digital twin required.
Strainlabs Analytics is the right choice when you want continuous remote monitoring, alerts, trends, a digital twin and consolidated history across multiple installations.
Strainlabs App gives you answers on-site.
Analytics gives you monitoring over time.
Start simple, scale when you're ready
Strainlabs App makes it easy to get started with digital control of critical bolted connections. You can read bolts on-site, store history and export documentation without installing a full system.
When the need grows, the same solution can be extended with Strainlabs Analytics for remote monitoring, alerts, trends and a digital twin.