Control plan and PFMEA software: how to choose in 2026
A control plan says what to check on every part, with which gage, how often, and what to do when a check fails. A PFMEA is the risk analysis that decides which of those checks matter. Software for one almost always does the other, because the two have to stay in step. This guide covers how they link, what to ask, and how eight tools compare.
Updated . Written by Structify, which builds quality applications on the systems a manufacturer already runs and is listed below for the problem it solves. Every other product is described from its own public site as of this date, and names are trademarks of their owners.
Pick a dedicated FMEA tool if writing PFMEAs is the work. Pick Structify when the slow part is turning customer prints into control plans in your shop's format.
- You want AIAG & VDA FMEAs, process flow, and control plans next to fault tree and other reliability toolsPick Relyence
- You want FMEA and control plans next to your SPC and gage dataPick Datalyzer
- You want a focused FMEA tool that keeps the control plan and flow diagram consistentPick PQ-FMEA+
- Your control plans have to drive inspection planning inside one quality systemPick CAQ.Net
- Your control plans start from customer drawings and live in a workbook only a few people can maintainPick Structify
The documents have to agree.
Every control plan row traces back through the PFMEA to a step in the process flow. Keeping that chain intact is most of what this software does.
- 01
Process flow diagram
Lists every operation from receiving to shipping. Each step becomes a row in the PFMEA, so a missing step is a missing risk.
- 02
PFMEA
For each step, asks how it can fail, what that does to the customer, and what prevents or detects it. The 2019 AIAG & VDA FMEA Handbook set out seven steps and replaced the RPN score with Action Priority.
- 03
Control plan
Carries the product and process characteristics forward with the specification, gage, sample size, frequency, and reaction plan. Plans are written for prototype, pre-launch, and production.
- 04
Linked, not copied
When an engineer changes a characteristic in one document, the other two should change with it. A spreadsheet copy drifts the first time someone edits one file and not the others.
Five questions to ask any vendor.
These decide whether the tool is still in use after the first launch it supports.
- 01
The documents are linked
Ask whether the process flow, PFMEA, and control plan share one record, so a change in one shows up in the others.
- 02
It starts from the drawing
Most control plan rows come from the characteristics on a customer print. Ask whether the tool reads the print or needs someone to type each dimension.
- 03
Your format and your rules
Customers and auditors expect a specific layout, and every shop has rules for gages, frequencies, and tighter internal limits. Ask whether the tool can produce your format exactly.
- 04
AIAG & VDA support
If you ship automotive parts, ask whether the tool supports the AIAG & VDA method and Action Priority as well as older RPN-based FMEAs.
- 05
It reaches the floor
A control plan only matters if inspectors follow it. Ask how inspection results get recorded against the plan and where they end up.
The 8 tools compared.
| Tool | What it covers | Best for |
|---|---|---|
| Relyence FMEA | DFMEA, PFMEA, process flow diagrams, control plans, and DVP&R, with templates for AIAG & VDA, SAE J1739, and MIL-STD-1629. | Quality and reliability teams that want FMEA next to fault tree, FRACAS, and other reliability tools. |
| Datalyzer FMEA | Web-based DFMEA, PFMEA, and control plan management, alongside SPC, gage management, and APQP. | Plants that want FMEA and control plans connected to the SPC data they already collect. |
| PQ-FMEA+ | PFMEA and DFMEA to ISO, AIAG, VDA, and AIAG & VDA, with consistent data across the control plan and process flow diagram. | Teams that want a focused FMEA tool rather than a full quality suite. |
| Knowllence | Process FMEA and control plan software, plus design FMEA and medical device risk management. | Automotive and medical device teams that want FMEA inside a wider risk management toolset. |
| APIS IQ-Software | FMEA and risk analysis, with a specialized editor for each of the seven AIAG & VDA steps. | Engineering teams with a large body of FMEA work to maintain. |
| CAQ.Net | Control plan and FMEA modules inside a quality management system that also covers inspection, gages, SPC, and PPAP. | Manufacturers that want control plans tied to inspection planning in one quality system. |
| Omnex AQuA Pro | DFMEA, PFMEA, control plan development, and PPAP documents. | Automotive suppliers that want FMEA and control plans packaged with PPAP. |
| Structify | Customer drawing to control plan: reads the print, applies your shop's rules, checks its own output, and exports the plan in your exact format. | Shops whose control plans start from customer prints and live in a spreadsheet or workbook. |
Who each one is for.
Relyence FMEA
relyence.comDFMEA, PFMEA, process flow diagrams, control plans, and DVP&R, with templates for AIAG & VDA, SAE J1739, and MIL-STD-1629.
Best for: Quality and reliability teams that want FMEA next to fault tree, FRACAS, and other reliability tools.
Relyence says its Always-in-sync feature keeps linked documents consistent, and it offers AI-assisted FMEA data generation.
Datalyzer FMEA
datalyzer.comWeb-based DFMEA, PFMEA, and control plan management, alongside SPC, gage management, and APQP.
Best for: Plants that want FMEA and control plans connected to the SPC data they already collect.
Datalyzer says more than 500 manufacturers use its FMEA software.
PQ-FMEA+
pq-fmea.comPFMEA and DFMEA to ISO, AIAG, VDA, and AIAG & VDA, with consistent data across the control plan and process flow diagram.
Best for: Teams that want a focused FMEA tool rather than a full quality suite.
Its developer says it has sold more than 1,000 licenses in more than 20 countries.
Knowllence
knowllence.comProcess FMEA and control plan software, plus design FMEA and medical device risk management.
Best for: Automotive and medical device teams that want FMEA inside a wider risk management toolset.
Knowllence is based in France and names LISI Automotive as a customer for AIAG & VDA design and process FMEA.
APIS IQ-Software
apis-iq.comFMEA and risk analysis, with a specialized editor for each of the seven AIAG & VDA steps.
Best for: Engineering teams with a large body of FMEA work to maintain.
APIS says well over a thousand companies use it.
CAQ.Net
caq.deControl plan and FMEA modules inside a quality management system that also covers inspection, gages, SPC, and PPAP.
Best for: Manufacturers that want control plans tied to inspection planning in one quality system.
Inspection planning from CAD is one of its modules.
Omnex AQuA Pro
omnexsystems.comDFMEA, PFMEA, control plan development, and PPAP documents.
Best for: Automotive suppliers that want FMEA and control plans packaged with PPAP.
Omnex also sells APQP/PPAP Manager for launch project management.
Structify
structify.aiCustomer drawing to control plan: reads the print, applies your shop's rules, checks its own output, and exports the plan in your exact format.
Best for: Shops whose control plans start from customer prints and live in a spreadsheet or workbook.
Structify does not sell a general FMEA tool. It builds the control plan application on your prints, gage library, and QMS, as client-owned code.
From customer print to control plan.
Structify does not sell a general FMEA tool. It builds the step most tools leave to an engineer: reading a customer's drawing and producing the control plan in the shop's own format, then getting inspection results back from the floor.
The control plan goes into the PPAP package. Read our guide to APQP and PPAP software.
- QA-101
Customer drawing to control plan
Pulls every dimension, tolerance, note, and flagged critical characteristic off the PDF or CAD print, applies the shop's rules, checks its own output, and exports the plan in the shop's format. Live in 14 days.
See the application - CASE STUDY
$400K saved in a two-week build
A precision machining shop turned prints into control plans through a ballooning tool, a VBA workbook, a PDF editor, and its ERP. One tested engine replaced them, and the shop avoided four QA hires. A quality engineer approves every extraction before it reaches the plan.
Read the case study - INSPECTION
QC Command Center
After the plan comes inspection. Since October 21, 2026, Current Tools' QC techs submit inspections from tablets into the QC Command Center instead of a Formstack form and a shared Excel file.
What Current Tools runs
Questions about control plan and PFMEA software
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