Release Notes

What's new in 1.1.7

8 new cover templates + a preview gallery. The Material Data Submittal and Hydraulic Calc Package cover picker grows from 5 to 13 designs — from copier-proof black & white to design-forward layouts. The new gallery shows live thumbnails, and you can star your favorites to pin them to the top (shared across both tools).

Slip Sheet — visual page editor. New mode in the PDF workspace: your base PDF renders as page preview cards. Click a page to replace it with the next slip-in sheet, drag a sheet onto a page to replace it, or drop it between two pages to insert. Click any placed page to undo.

PDF to CAD — line weights & colors tuned for AutoSPRINK. Converted drawings import with Element Widths pre-filled (~0.5 / 0.25 / 0.1) and colors mapped to AutoSPRINK's palette — no more everything-at-zero. Weight-split layers (-W050/-W025/-W010), stipple & hatch dots on their own -HATCH layer, a 3/32" = 1'-0" preset, and a custom scale box that takes 3/32, 1:50, or a raw factor.

Hydraulic Analysis Report — residential design bases. New System Design Basis selector: NFPA 13 residential sprinklers (19.3.1), NFPA 13R (7.1.1), and NFPA 13D (10.1/10.2), each writing the real code criteria into the report. Residential also joins the occupancy hazard dropdown with basis-aware density (0.1 under 13, 0.05 under 13R/13D).

Preliminary Calculation — Supply Safety Margin. Converts demand pressure into the supply needed for a chosen cushion, measured correctly as a percentage of the supply (supply = demand ÷ (1 − margin)). Auto-fills from your estimate; also available as a standalone tool in the mobile app.

Plus: the web edition (web.sprinkflow.studio) gains the vicinity map, flow test sheet PDF export, and the Slip Sheet tool.

SprinkFlow v1.1.6 — lighter, freer, and smarter about xrefs.

Fixed

• Free accounts get the local scans back. The plans scan (it's local OCR + pattern matching, not AI), PDF classification, bid plan intake, and hydraulic-calc scanning were incorrectly locked behind a subscription in 1.1.3–1.1.5. Cut-sheet and spec scans also run their built-in analysis for everyone; only the hosted AI enhancement requires a subscription.
• Explode CAD Blocks now binds xrefs first. Attached xrefs used to silently vanish from the exploded DXF. Use the new "Choose file (binds xrefs)" button so xrefs sitting next to the drawing are found and merged in before exploding.

Changed

• 22 MB smaller download (78 → 56 MB): removed an unused PDF library and the early DWG/DXF viewer.
• Sign-in fields work with your browser/OS password manager.

Update from within the app (Account → check for updates), or download the installer below.

SprinkFlow v1.1.5

Fixed

• Sign-in window: final visual polish (the thin white line above the buttons is gone).
• Your browser's password manager now recognizes the sign-in fields, so saved SprinkFlow credentials autofill on the web edition, and the desktop sign-in works the same way.
• Sign-in copy updated for the account era.

Update from within the app (Account → check for updates), or download the installer below.

SprinkFlow v1.1.4

Fixed

• The startup sign-in window is cleaned up: properly sized logo, no scrollbars, and polished buttons (the white band around Look Around / Sign In is gone).
• Sign-in copy now reflects the free tier: any SprinkFlow account unlocks the free design tools; subscribing adds exports and document generation. New users can create an account at sprinkflow.studio.

Update from within the app (Account → check for updates), or download the installer below.

SprinkFlow v1.1.3

Changed

• Free tier for lapsed accounts. If your beta or subscription has ended, you can still sign in and use every calculator and design tool — seismic bracing, hydraulic analysis, spacing, the material catalog, viewers, and more. Exports and document generation (submittal packages, calc packages, PDFs, DXF, AI features) require an active subscription: Account → Billing → Subscribe.

Also includes the v1.1.2 fixes (expired accounts can sign in; DWG/DXF Viewer; ODA converter links; hydraulic Saved Projects picker).

SprinkFlow v1.1.2

Fixed

• Expired accounts can now sign in and subscribe. Previously an expired beta license blocked sign-in entirely, which left the Subscribe button grayed out — the exact "billing subscribe option is grayed out" report. If your beta ended: sign in, open Account → Billing, and Subscribe works.

New

• DWG / DXF Viewer (Tools): open any DWG or DXF and see it rendered like a plotted sheet — quick-check a customer's drawing without launching CAD. DWG viewing uses the free ODA File Converter; download links are provided in-app.
• Convert PDF to CAD now links the free ODA File Converter so you can get direct-to-DWG output.
• Hydraulic Calculation Package: pull project name/address from Saved Projects.

Update from within the app (Account → check for updates), or download the installer below.

SprinkFlow v1.1.1 — Seismic Bracing UI fixes.

Fixed

• The brace-type pill in the seismic context bar rendered brown with near-black text; it's now a clean orange with white text (longitudinal and 4-way pills tuned to match).
• New Start Over button next to Clear: a true full reset. Clear only wiped the calc inputs and New Project left the previous job behind — Start Over now also clears the looked-up job address and SDS lookup (including the saved job info), so a prior Lookup-From-Address job is completely gone, even after a reload.
• Removed filler text from the Brace rack & results panel.

Update from within the app (Account → check for updates), or download the installer below.

SprinkFlow v1.1.0 — first feature release since 1.0.0.

New

• Material Catalog tab: browse and manage every datasheet in your catalog without starting a submittal. Faceted sprinkler filters (Manufacturer, Type, Orientation, K-factor, Temperature, Response) that constrain each other so you never hit a dead-end combination, plus "Ask AI to find this datasheet".
• Seismic Bracing: USGS SDS source-documentation (full ASCE 7 parameter set + one-page PDF), RedBuilt structural-member load ratings, Cp attachment-height reduction (18.5.9.3.3/.3.4), brace-specific elevation, and even-spacing brace / branch-line-restraint layout with a 12"–6' end-setback slider.
• Hydraulic Analysis: minimum remote-area length auto-calc.

Update from within the app (Account → check for updates), or download the installer below.

SprinkFlow 1.0.0 — the official release. Out of beta and here to stay.

SprinkFlow turns a pile of cut sheets and calcs into a clean, bookmarked submittal package, and packs the full toolbox a fire sprinkler designer reaches for — material submittals, hydraulic calc packages, storage & water-supply analysis, head layouts, bid estimating, PDF-to-CAD, CAD block exploding, and more.

Free to download and explore; a $39/month membership unlocks exporting your deliverables.

Existing beta users update automatically.

SprinkFlow Spotter — heads-only edition, first tester build.

How to run

1. Download the zip below and unzip it anywhere (Desktop is fine).
2. Run "SprinkFlow Spotter.cmd".
3. Sign in with the SprinkFlow account you were given access to.

Windows may warn about an unrecognised app the first time — choose More info, then Run anyway.

Requires access on your SprinkFlow account. If sign-in says you have no Spotter access, tell James which email you used.

New CAD Prep tools:

• Convert PDF to CAD — turn a PDF sheet into an editable DXF. Browse the whole set as thumbnail cards, click the sheet you want, pick a plot scale, and import every color layer as its own CAD layer.
• Explode CAD Blocks — drop a DWG or DXF and flatten every block into plain lines, arcs, text, and hatches — AutoCAD's XPLODE with no AutoCAD needed. DWG files are read with the free ODA File Converter; DXF needs nothing.

Save Project button restored in Legacy Mode - it's back in the Project card header, on both the New Project and Saved Projects tabs. Thanks to Gerald E. for the catch.

NEW: Hydraulic Analysis Report tool (Design Tools) - build a copy-paste design-basis report for your plan sheets: applicable codes, occupancy hazard by room (grouped, with densities), a QR design-area reduction calculator (enter ceiling height, get the reduction), dry/preaction and sloped-ceiling +30% modifiers, custom hazard classifications you can save for reuse, and size-banded piping specs including underground pipe types. Save reports to reopen/edit and link them to a saved project. Ceiling height accepts feet-inches (e.g. 15-2).

Vicinity Map - pan controls moved below the map so the map screenshots clean, plus a Copy Image button to paste the map straight into your plan set.

Installer unsigned while code-signing is pending.

NEW: Vicinity Map Generator — type a project address, and SprinkFlow pulls the surrounding streets from OpenStreetMap and draws a plan-set-style vicinity map: heavy major roads, thin minor streets, a dashed AREA OF WORK box, north arrow, and labels. Everything's editable — drag the AREA OF WORK box and its callout, drag street labels, and right-click any street or label to rename or remove it (without changing line weight). Click a street to flip it heavy/thin. Export to PNG for a plan sheet or DXF (feet, layered) for your design software. Needs an internet connection; only the address is sent out.

Hanger spacing now enforces the NFPA 13 end-of-line limit — the last hanger on each end stays within the unsupported-length maximum (36/48/60 in for 1"/1-1/4"/larger steel), with the run re-spaced as evenly as the code allows.

Plus the water-supply safety margins and HydraCalc import from recent updates. Installer unsigned while code-signing is pending.

Safety margins on the Water Flow Test Sheet — every system demand now shows its safety margin in exact PSI and as a percentage of the residual pressure at the demand flow: on screen, in the report summary, and as a new Safety Margins table on the printed sheet. Demands the supply can't cover are flagged in bold red. Thanks to Justin for the request.

Also in this update:

• The demand row's Remove button no longer runs off-screen on narrower panels
• Head Layout diagram dimensions are readable at any head count (uniform runs now dimension as "N SPA @ spacing = total", drafting-style)

Installer unsigned while code-signing is pending.

HydraCalc / Hydratec calc support — calcs from HydraCalc (Revit) now read correctly: Job Name → project name, Location → project address, occupancy classification → hazard (LH/OH/EH/RES expanded), and area numbers like L1-1 keep their formatting. Thanks to Gerald E. for the sample files that drove this.

NEW: Spec Materials Finder — drop a full project spec book (even 1,800+ pages) on Step 1. SprinkFlow finds the fire-sprinkler sections (Div 21 or legacy Div 15), pulls the material requirements — pipe schedules, hanger types, stainless callouts, prohibitions — with page references, and matches them against your datasheet catalog.

Wizard upgrades — clickable step chips to jump between the 4 steps, an always-visible Save Project button, Start Over now confirms and truly clears, and a session banner when a previous submittal is still loaded.

Plus light-mode polish, layout fixes throughout, and under-the-hood security hardening. Installer unsigned while code-signing is pending.

Security-hardening release (pre-payment audit).

• The local app API now rejects cross-origin requests (CSRF protection) and binds to loopback by default.
• Companion server-side hardening is already live (admin-role lockdown, dev-auth disabled, AI cost ceiling, real client-IP rate limiting).

No user-facing feature changes. Installer unsigned while code-signing is pending; the updater still verifies every download by SHA-256.

Fixes and refinements:

• Datasheet preview Download now actually saves the file (pywebview download support was off).
• Project Package export: everything lands in one folder (no "Plans" subfolder), and no console window appears.
• Submittal wizard: Start Over button, full-width workspace, and a Both/Cover/TOC preview toggle.
• Light-mode contrast fixes (privacy popover, AI confidence badges, catalog row menu).

Installer unsigned while code-signing is pending. Existing testers will get an in-app update prompt.

The final beta before the SprinkFlow full launch on July 1, 2025. Builds on beta.13.

New in beta.14

• AI "find this datasheet" now actually finds it. Search the catalog for a product that isn't there, click Ask AI to find this datasheet, and it web-searches for the manufacturer's real datasheet, pulls the PDF in for one-click import, and links the product page when it can't fetch the file directly.

Also included (since beta.12)

• Preliminary Calculation — fast early demand/feasibility estimate with a tree & grid hydraulic network solver, design bases (occupancy / residential / ESFR-storage), auto K-factor, and a pipe-size optimizer.
• Project Package export — one click bundles your submittal, calc package, and scanned plans into a folder.
• Water Flow-Test Sheet — formatted hydrant flow-test report PDF.
• Hanger Spacing calculator — NFPA 13 (2025) maximum hanger spacing.
• Recent Outputs in the PDF workspace; merge / compress / merge+compress PDF tools.
• Guided submittal builder with the step indicator at the top; Legacy layout toggle moved to Settings.

_Unsigned beta build — Windows SmartScreen may warn on first run; choose More info → Run anyway._

The final beta before the SprinkFlow full launch on July 1, 2025.

New

• Preliminary Calculation — a fast early demand/feasibility estimate: density/area, Hazen-Williams friction, a real tree & grid hydraulic network solver, ESFR/storage/residential design bases, auto K-factor selection, and a pipe-size optimizer.
• Project Package export — one click bundles your material data submittal, hydraulic calc package, and scanned plans into a single folder.
• Water Flow-Test Sheet — generate a formatted hydrant flow-test report PDF.
• Hanger Spacing calculator — NFPA 13 (2025) maximum hanger spacing, with an editable table and diagram.
• Recent Outputs — your latest generated PDFs are one drag away in the merge workspace.
• AI "find this datasheet" — look up a cut sheet by name when it isn't already in your catalog.

Improved

• Guided submittal builder — the step indicator now sits at the top of the page.
• The Legacy (all-in-one) layout toggle moved into Settings.

_Unsigned beta build — Windows SmartScreen may warn on first run; choose More info → Run anyway._

SprinkFlow 0.2.1 — Private Beta 12

AI Plan Reviewer (premium) — now built in and cloud-hosted. Sign in, drop in your plans, and get an automatic plan-review markup + comment letter. Capped at 5 reviews/day per account during beta.

New: Hanger Detail Generator — draw fire-sprinkler pipe hanger details and export a clean PNG.

Head Layout Generator → DXF export — export the proposed head layout as 8-inch circles, anchored to the lower-left wall corner so it drops straight into your CAD.

Bid Estimator — drag in a bid set to auto-fill project name, address, and area, plus a square-footage → head-count estimator with a building-layout adjustment.

Material Data submittal — new toggle to show or hide the disclaimer on the cover sheet.

Hydraulic Calc Package — cleaner cover (disclaimer removed).

_Installer is unsigned while code-signing certificate validation is pending._

Storage Hazard Analysis: corrected Group A plastic rack CMDA criteria across all NFPA 13 editions (2019/2022/2025).

• Added the missing ceiling-only Table 21.5.1.1 / 21.5.2 design options.
• Removed the nonexistent "Figure 25.9.x" references from the 2022 and 2025 paths (those figures only exist in the 2019 edition).
• Encoded each edition's table exactly (the 2019 table differs from 2022/2025 in clearance bands and footnotes).

Installer is unsigned while code-signing is pending.

Private beta build 0.2.1-beta.10.

• Clear sign-in feedback: when you press Sign In, you now get an obvious result right at the button — green "Signed in, tools unlocked", or red "Sign-in failed" with the reason. (Previously the result could render where you couldn't see it.)

Installer is unsigned while code-signing certificate validation is pending.

Private beta build 0.2.1-beta.9.

• Contractor logo: new "Paste from Clipboard" button (Ctrl+V and drag-drop still work).
• Sign-in: show/hide (eyeball) toggle on password fields.
• More resilient licensing: the app now rides out a slow/cold server when refreshing its license instead of locking out, and license leases last longer so a brief outage never locks you out.

Installer is unsigned while code-signing certificate validation is pending.

Private beta build 0.2.1-beta.8.

Fixed: the in-app "Download Update" button. In beta.6 and beta.7 it silently did nothing (the request 404'd). It now correctly opens the latest installer in your browser. Because the button was broken in the version you currently have, this update is a one-time manual download — future updates will work from the button.

Also in 0.2.x: AI-assisted import (cut sheets + hydraulic calc packages read by Claude for accurate model, K-factor, listings, and design criteria) is now live, with automatic fallback to the built-in parser.

Installer is unsigned while code-signing certificate validation is pending.

Private beta build 0.2.1-beta.7.

New: AI-assisted import. When you import cut sheets or hydraulic calc packages, SprinkFlow now reads them with Claude for far more accurate auto-fill:

• Cut sheets: manufacturer, model, K-factor, listings, temperatures, and the per-orientation SIN/listing map.
• Hydraulic calcs: hazard, design density/area, demand flow & pressure, available supply, safety margin, system type, and K-factor.

The existing parser stays as an automatic fallback, so import works unchanged when AI is unavailable. This is the same auto-update-enabled build line; after installing 0.2.1-beta.6 or later you will see "Update Available" in the app for future releases.

The installer is unsigned while our code-signing certificate is pending.

SHA-256 (SprinkFlow-Setup.exe): 54796c9f1040911b265569c48ea43b92f5a482aa6d0a8e192776a7fdd8719200

Private beta build 0.2.1-beta.6.

This is the last build you need to download by hand. After installing it, SprinkFlow checks for updates automatically and shows an "Update Available" notice at the top of the app.

Changes since beta.5:

• Automatic update checking with an in-app "Update Available" notice
• Redesigned Account window with Overview / Sign In & Profile / Billing / Advanced tabs
• Open Folder and Copy Path buttons after generating submittals and calc packages
• Unsaved-changes indicator and Ctrl+S to save the current project
• Clearer messages for unsupported files and a friendly notice if a background error occurs
• Email attachment size pre-check before building the full submittal draft
• Plain-English wording across license and account messages, plus polish fixes

The installer is unsigned while our code-signing certificate is pending.

SHA-256 (SprinkFlow-Setup.exe): da0eb63dc263bd4cf2d04706ebdeec861c7c9a041d14801f20623787ebd558be

Private beta build 0.2.1-beta.5.

Changes since beta.4 distribution:

• New SprinkFlow app icon
• Additional Information cover sheets (AHJ, General Contractor, Engineer, Owner) for material and hydraulic packages
• Material submittal Web Links Table TOC with fillable fields and multi-page support
• Hydraulic calc package: hide-contractor option and cleaner TOC/bookmark naming
• Plain Light theme fixes and dropdown contrast improvements
• Catalog: Ames Fire & Waterworks Deringer and SS-series backflow preventers

The installer is unsigned while code-signing certificate validation is pending.

SHA-256 (SprinkFlow-Setup.exe): 21e5b1818522534b5626be6d8cff316e220224fb2ffb712dde9e54f9514e4a50