Dozuki vs Virtual Flange Slide Rule
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dozuki
This app digitizes standard operating procedures and training materials for frontline workers. It ensures access to the latest versions, facilitates onboarding and retraining, and captures process data for continuous improvement and quality management.
- Digital work instructions
- Frontline worker training
- Continuous improvement feedback
- Quality data collection
- Version control for procedures
- Electronic sign-offs
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Today’s top industrial companies use Dozuki to create, control, and communicate standard training and work instructions to frontline workers from the floor to the field. Learn how you can upgrade your workforce with Dozuki at www.dozuki.com WORK INSTRUCTIONS Turn documented operating procedures into the standard all employees follow and train against. Dozuki delivers clear and concise digital work instructions that operators of any skill level can follow with confidence, and ensures workers only have access to the latest standard. FRONTLINE TRAINING Leverage documented standards as the foundation of your onboarding, cross-training, and retraining programs. Instantly view who is trained to the latest version and automate the training of workers when standards or employee roles change. CONTINUOUS IMPROVEMENT Integrate a feedback loop to capture process knowledge from your experts on the frontline. Allow workers to provide suggestions for process improvements directly within any step of a work instruction. QUALITY MANAGEMENT Collect data in-procedures to capture critical information about work orders. Require a supervisor to sign-off electronically at any stage of a procedure. VERSION CONTROL Rest easy knowing you can roll-back to previous versions and view the change history of any documented procedure. Track, approve, and release new versions of instructions with custom approval workflows — ensuring changes are approved. CAPTURE DATA Gather essential information from process workers while procedures are being completed. Collect information such as work order numbers, quality check values, or e-signatures from the floor, then export to your external systems. COMMON USE CASES • Preventative Maintenance • Quality Inspection • Lock Out Tag Out • ISO 9001 Certification • Production Assembly • Corrective Maintenance • Sanitation & Cleaning • Equipment Changeover • Shipping & Packaging LEARN MORE dozuki.com/features
Virtual Flange Slide Rule
Access essential measurements and dimensional data for API 6A integral flanges. This tool provides quick access to critical specifications for engineering and industrial applications.
- API 6A integral flange data
- Relevant measurements
- Dimensional data access
- Engineering specifications
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Valveworks USA presents the Virtual Flange Slide Rule. This application gives you access to all the relevant measurements and dimensional data for the API 6A integral flange.
Screenshots
Verdict
Dozuki and Virtual Flange Slide Rule both sit at 5.0 stars, but that hides the real split: 100% of Virtual Flange Slide Rule's written reviews are positive against 25% of Dozuki's. Virtual Flange Slide Rule also leads on ratings volume (13 vs 1). Dozuki's advantage is update cadence (every 2 weeks vs every 4 months). On price, rating, ads and in-app purchases 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.
On the App Store both sit at effectively the same score — 5.0 for Dozuki against 5.0 for Virtual Flange Slide Rule. That said, the two scores are not equally well evidenced: Virtual Flange Slide Rule has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 25% of Dozuki's written reviews are positive against 100% of Virtual Flange Slide Rule's.
Dozuki ships an update every 2 weeks, Virtual Flange Slide Rule every 4 months. The most recent releases landed on October 10, 2026 and October 23, 2026 respectively.
| Parameter | Dozuki | Virtual Flange Slide Rule |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (13 ratings) |
| Positive reviews | 25.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 13 — better |
| Update frequency | Every 2 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 72 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Dozuki | American Certified Equipment, Inc. |
Customer experience
Dozuki
Virtual Flange Slide Rule
In-app purchases
Dozuki
No in-app purchases
Virtual Flange Slide Rule
No in-app purchases
Questions
Is Dozuki free?
Is Virtual Flange Slide Rule free?
Which has better reviews, Dozuki or Virtual Flange Slide Rule?
Do Dozuki or Virtual Flange Slide Rule have ads?
Which is updated more often, Dozuki or Virtual Flange Slide Rule?
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