Local Tools — One-Time Purchases

BATU LAB NOTES

Small local tools. One-time purchases.

Focused tools for developers, designers and small teams. Choose the job you need to finish, download your tool, and run it on your own device.

One payment. No subscription. Product pages explain the included files, requirements and limitations.

Available now

Dependency Drift Map product artwork

Dependency Drift Map — $9 USD

Compare package.json dependency declarations and export a sorted change ledger.

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Code Sample Indexer product artwork

Code Sample Indexer — $7 USD

Build a searchable index of Markdown code fences without exporting their code bodies.

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Design Handoff Diff product artwork

Design Handoff Diff — $9 USD

Compare two structured snapshots of design tokens, components and assets.

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Break-Even Scenario Board product artwork

Break-Even Scenario Board — $7 USD

Compare supplied cost and unit assumptions with visible integer-cents calculations.

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Release Readiness Kit product artwork

Release Readiness Kit — $5 USD

Create a read-only filename and manifest hygiene report before sharing a folder.

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CSV Check Kit product artwork

CSV Check Kit — $5 USD

Check CSV headers, row widths, required values and duplicate keys.

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JSONL Audit Kit product artwork

JSONL Audit Kit — $5 USD

Find structural issues in JSON Lines with redacted, line-numbered findings.

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Markdown Link Map product artwork

Markdown Link Map — $5 USD

Check local Markdown file links, images and supported heading anchors.

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Env Template Diff product artwork

Env Template Diff — $5 USD

Compare environment key names without printing or exporting their values.

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Web Asset Budget Kit product artwork

Web Asset Budget Kit — $7 USD

Inventory local assets against supplied byte budgets without uploading or optimizing them.

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Invoice Sequence Check Kit product artwork

Invoice Sequence Check Kit — $7 USD

Preflight an invoice-register CSV and review optional numeric ID-gap ranges.

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In preparation

More focused tools are on the way: Icon Grid Validator, Invoice Aging Calculator, Duplicate File Report, Public Copy Preflight, Mouse Signal, Paste Preview, HashDrop Ledger, Folder Ledger, App Bundle Receipt.

Before you choose

Browser tools open from the included index.html in a current desktop browser. Python tools require Python 3.11 or later and use the standard library. Mac tools require Apple silicon and macOS 13 or later; they are ad-hoc signed and not notarized. Check the individual product page before buying.

Diagnostic reports are narrow checks, not guarantees. Financial tools provide descriptive arithmetic, not forecasts or advice.

Support: batulabnotes@gmail.com
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