NLE Calc vs Master Lock® cLOTO™ Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NLE Calc
This utility calculates the Recommended Weight Limit (RWL) and Lifting Index (LI) for single or multiple lifting tasks based on the NIOSH Lifting Equation. It helps assess physical stress to prevent low back musculoskeletal disorders.
- Calculates Recommended Weight Limit (RWL)
- Calculates Lifting Index (LI)
- Calculates Composite Lifting Index (CLI)
- Based on Revised NIOSH Lifting Equation
- Assesses physical stress for lifting tasks
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The NIOSH Lifting Equation calculator (NLE Calc) is based on the Applications Manual for the Revised NIOSH Lifting Equation (Pub No. 94-110) and can be used to calculate the Recommended Weight Limit (RWL) and for single or multiple lifting tasks. The Lifting Index (LI) is an index of the relative physical stress for performing a single lifting task and the Composite Lifting Index (CLI) is an index of the overall physical stress for performing multiple lifting tasks. NIOSH recommends an LI and a CLI of 1 or less for protecting workers from physical stress related to development of low back musculoskeletal disorders. Please refer to the Applications Manual for the Revised NIOSH Lifting Equation publication for examples and details on how calculations are performed and what the results imply.
Master Lock® cLOTO™ Manager
Digitally transform workplace safety with a connected lockout tagout solution. Streamline processes, assign and track procedures, and gain full traceability for enhanced accountability and efficiency.
- Digital procedure workflows
- Assign and track procedures
- Full traceability of procedure data
- Real-time decision making
- On-demand metrics for optimization
- Digital tagging and hardware scanning
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We’re revolutionizing workplace safety. The Master Lock cLOTO™ (Connected Lockout Tagout) Solution enables you to digitally transform your program by bringing safety, accountability and innovation together on a desktop or mobile device. Streamline processes, assign and track procedures and make real-time decisions when they matter most. Get complete and connected control, all in one place. Full Traceability Track procedure data for full visibility of active and completed procedures, providing an added measure of accountability to your facility's lockout program. Increase Safety Improve safety by ensuring LOTO procedures are executed accurately and completely. Unlock Efficiency Access on-demand metrics of maintenance and LOTO tasks to quickly optimize processes. Drive increased efficiency by digitizing the audit trail. Access Support Our professional consultation services are here to support you 100% of the way with compliance assessments, trainings, written procedures and more. We’ve got you covered. The Master Lock® cLOTO™ Manager app is one of the core components of the complete Master Lock® cLOTO™ Solution. The Manager app helps to mitigate human error with digital procedure workflows you can take anywhere in the facility. Access step-by-step lockout instructions, track in-progress tasks and use the digital tagging function to scan hardware and instantly retrieve information on lock owner and assigned procedure.
Screenshots
Verdict
The clearest difference is rating: Master Lock® cLOTO™ Manager at 5.0 against NLE Calc's 2.8. NLE Calc's advantage is update cadence (fortnightly vs every 4 months) and ratings volume (10 vs 3). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Master Lock® cLOTO™ Manager holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 10 and 3 respectively.
NLE Calc ships an update fortnightly, Master Lock® cLOTO™ Manager every 4 months. The most recent releases landed on November 5, 2026 and November 4, 2026 respectively.
| Parameter | NLE Calc | Master Lock® cLOTO™ Manager |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (10 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 10 — better | 3 |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 17.1 |
| Further details — not scored | ||
| Size | 62 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Centers For Disease Control and Prevention | Master Lock Company, LLC. |
Customer experience
NLE Calc
Master Lock® cLOTO™ Manager
In-app purchases
NLE Calc
No in-app purchases
Master Lock® cLOTO™ Manager
No in-app purchases
Questions
Is NLE Calc free?
Is Master Lock® cLOTO™ Manager free?
Which has better reviews, NLE Calc or Master Lock® cLOTO™ Manager?
Do NLE Calc or Master Lock® cLOTO™ Manager have ads?
Which is updated more often, NLE Calc or Master Lock® cLOTO™ Manager?
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