Start with the work in front of you.
Find the research problem you’re trying to solve. Open it to see the Vahtian tools built for that part of the work.
Research roadmap
From the first research question to the final citation check, each tool preserves the evidence, method, and human decisions behind the result.
Find a questionWhat should I study next? 2 tools
Decide which study to run next.
Too many ideas, no clear next project.
- Format
- Kit · Obsidian and templates
- Data
- Your machine
- Licence
- Paid · one payment
Check whether a study idea is ready to become a protocol.
I have an idea, but is it ready to write up?
- Format
- Browser tool
- Data
- In your browser, nothing uploads
- Licence
- Free
Plan the studyHow do I design it so it holds up? 4 tools
Plan and document an observational study.
The plan, decisions, and outputs scatter across files.
- Format
- Kit · local Obsidian workspace
- Data
- Your machine
- Licence
- Paid · one payment
Test whether a planned design can recover the effect, before you collect data.
I can’t tell if the design will detect what I’m after.
- Format
- R package
- Data
- Your machine
- Licence
- Apache-2.0
install.packages("recoverlite",
repos = c("https://heidihelena.r-universe.dev",
"https://cloud.r-project.org"))
Defend your qualitative sample size.
A reviewer will ask why I stopped at N.
- Format
- Browser tool · €49 Sample Defence Pack
- Data
- In your browser
- Licence
- Free · paid pack
Clean a REDCap data dictionary that won’t validate.
REDCap keeps rejecting my dictionary.
- Format
- Browser tool
- Data
- In your browser, nothing uploads
- Licence
- Free
Collect and organise evidenceHow do I gather it without losing the thread? 4 tools
Find the open-access PDFs for papers in your Zotero library.
Half my references have no PDF attached.
- Format
- Zotero plugin
- Data
- Your machine
- Licence
- Free
Capture evidence from abstracts as you screen.
The evidence slips away while I screen.
- Format
- Browser tool
- Data
- In your browser
- Licence
- Free
Check how well two reviewers agree.
Do my co-reviewer and I actually agree?
- Format
- Browser tool
- Data
- In your browser
- Licence
- Free
Extract and appraise the studies you include.
Extraction and appraisal live in a messy spreadsheet.
- Format
- Browser tool
- Data
- In your browser
- Licence
- Free
Analyse the dataWhat does the result depend on? 4 tools
Code interviews on your own computer, with nothing uploaded.
The interviews can’t leave my machine.
- Format
- Local kit
- Data
- Your machine
- Licence
- Paid · one payment
Stress-test a causal analysis.
Does the result hold across clusters, time, and overlap?
- Format
- R and Python package
- Data
- Your machine
- Licence
- Apache-2.0
pip install assesslite
Check a graph model for evaluation leakage.
Is my network model leaking test information?
- Format
- Python package · research demonstrator
- Data
- Your machine
- Licence
- Apache-2.0
pip install vahtian-epinet
Synthesize evidence across studies.
I need to combine results into one estimate.
- Format
- Browser tool with an R path
- Data
- In your browser
- Licence
- Free
The manuscript fights back 3 tools
Write your paper in the order that works.
The blank page, and no clear order to build the draft.
- Format
- Kit · templates and prompts
- Data
- Your machine
- Licence
- Paid · one payment
Check whether every cited paper supports the claim you wrote.
I’m not sure every citation says what I claim.
- Format
- macOS app or Claude Desktop extension
- Data
- Your machine
- Licence
- Free
Run the submission checks in order and see what is left to fix.
Have I missed something a desk editor will catch?
- Format
- Browser tool
- Data
- In your browser
- Licence
- Free
Check your reference list before submission.
Are my references complete, consistent, and real?
- Format
- Browser tool
- Data
- In your browser
- Licence
- Free
Check and submitHow do I meet what the journal asks? 2 tools
Write the AI-use disclosure your journal asks for.
The journal wants an AI-use statement and I don’t know the format.
- Format
- Ten templates for manuscript, thesis, grant, and peer review
- Data
- Your machine
- Licence
- Paid · one payment
Answer every reviewer comment, point by point.
A long reviewer letter and no system to respond.
- Format
- Kit · templates
- Data
- Your machine
- Licence
- Paid · one payment
Other research workflowsReviewing evidence, running panels, or automating repeated work? 3 tools
Write a fair, specific peer review.
I’m reviewing a paper and want to be fair and clear.
- Format
- Kit · templates
- Data
- Your machine
- Licence
- Paid · one payment
Run a structured guideline panel.
A panel needs blinded consensus with an auditable trail.
- Format
- Browser tool · facilitated pilots
- Data
- In your browser
- Licence
- Free
Let an AI assistant drive the open tools, human-first.
I want my AI assistant to run the tools, not replace my judgment.
- Format
- Agent skill
- Data
- Your machine
- Licence
- Free
Open source where possible. Licences are listed with each project. Browser tools run at vahtian.com with nothing to install. Installable software runs inside your existing research environment whenever the workflow allows. See all the open-source projects together.
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