Master Lock® cLOTO™ Worker vs Architects Ruler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Master Lock® cLOTO™ Worker
This app digitizes workplace safety procedures, enabling streamlined assignment and tracking of tasks. It provides full traceability and enhances accountability for lockout/tagout programs, improving safety and efficiency.
- Digital lockout/tagout procedures
- Assign and track safety tasks
- Full traceability of procedures
- Enhance workplace safety
- Streamline efficiency
- Digital audit trail
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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™ Worker app is one of the core components of the complete Master Lock® cLOTO™ Solution. The Worker app enable maintenance employees to apply a padlock and automatically create a digital footprint of their participation during group lockout processes—no pencils, no paper.
Architects Ruler
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Architects Ruler is made by architects for architects. And designers. Simple and convenient, a quick tool to get grip on all dimensions on any scale.
Screenshots
Verdict
The clearest difference is in-app purchases: Master Lock® cLOTO™ Worker at none against Architects Ruler's 1. Master Lock® cLOTO™ Worker also leads on device support (3 vs 1) and iOS requirement (14.0 vs 26.0). On price, update cadence and ads 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. Architects Ruler sells 1 one-off in-app purchase. Master Lock® cLOTO™ Worker asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | Master Lock® cLOTO™ Worker | Architects Ruler |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 29 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Master Lock Company, LLC. | Gijs Raggers |
In-app purchases
Master Lock® cLOTO™ Worker
No in-app purchases
Architects Ruler
- Lifetime scales menu$0.99
Questions
Is Master Lock® cLOTO™ Worker free?
Is Architects Ruler free?
Do Master Lock® cLOTO™ Worker or Architects Ruler have ads?
Which is updated more often, Master Lock® cLOTO™ Worker or Architects Ruler?
Other comparisons
