Comparison

SPM LineLazer vs PSLab

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

Head to head
About

SPM LineLazer

Features
Read full description

The app, designed for use with the LineLazer precision shaft alignment sensors from SPM Instrument (LLS10 and LLM10), ensures a smoother-than-ever alignment process! The app guides you through the entire alignment process in an intuitive manner, using a visually appealing and intelligible 3D graphical interface. You can rotate the 3D virtual machine for a live view from any direction, and the continuous sweep function saves considerable time and effort. The app can visually amplify misalignment conditions, making it easy to see any vertical or horizontal angularity and offset. Once the system has determined the degree of misalignment, the app provides clear and straightforward on-screen guidance to the feet corrections necessary to achieve a perfectly aligned machine. Upon completion of the procedure, you can save details and results in a report that can be shared in a variety of ways. The LineLazer sensors and app are a cost-efficient laser alignment system that does not require a portable data logger. The sensors provide precise and reliable readings, and the app can be used on any laptop, tablet, or smartphone (recommended minimum screen size is 5ā€) with Bluetooth; just download the app and connect to the sensors. The app features a Demo mode, allowing users to simulate alignment scenarios and try out app functionality also without the sensors. Key features of the LineLazer app include: • Precision alignment with reliable results • Intuitive interface with enhanced, live view 3D graphics • Responsive design • Continuous sweep • Visual amplification of misalignment • Soft foot check • Feet lock • Thermal growth compensation • Tolerance checks • Demonstration mode • Free app download - no license required.

About

PSLab

Features
Read full description

Pocket Science Lab (PSLab) comes with an array of instruments including Oscilloscope, Multimeter, Waveform Generator, Frequency Counter, Programmable Voltage, Current Source and many more. With instruments such as the Luxmeter and Barometer you can also do measurements directly using your phone sensors. Other instruments can use the PSLab Open Hardware extension that combines many devices in one. PSLab enables you to do science experiments without the need for programming. You can store and export the data and show it on a map. The app is created by the FOSSASIA community and developed entirely as Open Source ensuring privacy and long-term support.

Screenshots

SPM LineLazer2 screens
PSLab4 screens

Verdict

The call

The clearest difference is update cadence: PSLab at fortnightly against SPM LineLazer's every 3 months. PSLab also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

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

UpkeepUpdate frequency

SPM LineLazer ships an update every 3 months, PSLab fortnightly. The most recent releases landed on September 26, 2026 and September 13, 2026 respectively.

Scorecard2 real differences Ā· 4 level
SPM LineLazer versus PSLab: the parameters behind the verdict, then further details
ParameterSPM LineLazerPSLab
PriceFreeFree
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size96 MB32 MB
Age rating4+4+
DeveloperSPM Instrument ABFOSSASIA

In-app purchases

None

SPM LineLazer

No in-app purchases

None

PSLab

No in-app purchases

Questions

Is SPM LineLazer free?
SPM LineLazer is free to download, with no in-app purchases.
Is PSLab free?
PSLab is free to download, with no in-app purchases.
Do SPM LineLazer or PSLab have ads?
Neither SPM LineLazer nor PSLab shows ads.
Which is updated more often, SPM LineLazer or PSLab?
SPM LineLazer ships an update every 3 months, and PSLab fortnightly. Most recently, SPM LineLazer was updated on September 26, 2026 and PSLab on September 13, 2026.

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