The first app that actually reads
your knitting pattern

Track your place in any knitting or crochet pattern — section by section, row by row, with your PDF always visible. Our curated library of 110+ patterns is ready to go. Bring your own PDFs and our AI engine will structure them for tracking.

Download for iOS See Features
Pattern collection
Row tracker
Garment schematic

We don't generate patterns. We help you follow yours.

Every word you see in InterTwined comes from the pattern designer — not from AI. We don't create instructions, invent stitches, or replace anyone's work. Your original PDF is always visible right beside the tracker.

What the AI does is read — it identifies sections, counts rows, detects sizing, and organizes what's already on the page so you can track your place without losing your mind. The designer wrote the pattern. We just help you not lose your spot in it.

Your patterns are not used to train AI models. InterTwined uses Anthropic's commercial API, where all data is automatically deleted within 7 days and is never used for model training — by policy, not just by promise. No AI company is learning to write patterns from your PDFs.

From PDF to first stitch in under a minute

1

Import your pattern

Drop in any PDF — from your files, Ravelry library, or our curated collection. The on-device parser instantly shows what it found.

2

One tap to analyze

The AI receives pre-extracted checkpoints as anchors from your PDF, then structures every row around them. Scored for quality.

3

Knit with confidence

Follow along row by row. See your instruction, stitch count, and position on the garment schematic.

Split View

PDF and tracker, side by side

Turn your phone sideways or open on iPad — the pattern PDF sits on the left, your tracker on the right. Resize the split to your preference. No more switching between apps.

Split view — PDF and tracker side by side
PDF import
Smart Import

Pre-analyzed before the AI even starts

12 feature dimensions extracted in milliseconds: cast-on, gauge, sizes, pieces, stitch checkpoints, shaping math, chart references, and more.

Row Tracking

Never lose your place again

Each row shows the exact instruction and stitch count. Tap to advance, swipe to go back, or use voice commands hands-free. Works for knitting, crochet, and amigurumi.

Row tracking in action
Visual Tracking

See your garment take shape

Generated from real stitch counts — not a generic illustration. Highlights your current position as you knit. Best experienced in landscape.

Pattern detail with garment schematic

A three-stage engine no one else has

Other apps make you type every row by hand. InterTwined reads your pattern automatically — with a proprietary pipeline that parses, extracts, and validates.

1

Step 1: On-Device Parser

Before any AI runs, our local parser scans your PDF in milliseconds — extracting cast-on counts, gauge, sizes, shaping math, stitch checkpoints, and piece structure. Zero cost. Zero network. Entirely on your phone.

2

Step 2: AI Extraction

The parser's extracted checkpoints feed into the most advanced AI models available — anchoring the extraction to facts pulled directly from your PDF. The AI fills in the structure; the parser keeps it honest.

3

Step 3: Validation & Scoring

Every extraction is scored across 7 dimensions: stitch math, section integrity, size consistency, chart honesty, instruction quality, shape data, and metadata. You see the score before you start knitting.

Live Garment Schematic

Your project rendered as an actual garment shape — body, sleeves, yoke — drawn from real stitch counts. Highlights your current position as you knit.

AI Pattern Assistant

"How many stitches should I have right now?" Get answers grounded in your actual pattern, your exact row, and the full PDF text.

Import from Anywhere

Any PDF from any source — DROPS, Yarnspirations, Ravelry, LoveCrafts, Etsy designers. Plus direct Ravelry integration and our curated collection of 110+ patterns.

Hands-Free Voice Control

"Next." "Go back." "Next section." Keep your hands on your needles and let your voice advance the tracker. Auto-restarts between commands for continuous hands-free knitting.

Simple Mode (Default)

Your pattern's original text for each section, a clean row counter, and your PDF always a tap away. Perfect for knitters who know their pattern and just need a place keeper. Advanced row-by-row AI mode available for patterns that need it.

Browse free patterns instantly

Search thousands of free patterns on Ravelry without even logging in. Find something you like, tap to import, and start tracking. For paid patterns, download the PDF from Ravelry.com and upload it directly.

Ravelry free pattern search

No account required to start

Search by keyword, designer, or craft type. See pattern details, photos, and difficulty ratings. Free patterns import with one tap — InterTwined downloads the PDF and sets up your project automatically.

Have a Ravelry account? Connect it to browse your saved and purchased patterns too.

110+ curated patterns, no extraction needed

Every pattern in the InterTwined collection has been pre-analyzed, quality-scored, and validated. Import one and start tracking immediately — no credit required. We're adding new patterns every week.

InterTwined curated pattern library

Extract once per size, switch instantly

Making the same pattern for different people? Extract each size separately, name them whatever you want, and switch between them with a single tap. Your row progress is preserved for each size.

Size switching between extractions

Your extractions, your labels

Rename any extraction to something meaningful — "Large sweater for Amy" or "Baby size for the shower gift." Every extraction lives permanently on your project.

Tap any size to switch. The AI adjusts stitch counts, row counts, and shaping instructions to match. Your progress on each size is tracked independently.

Sizes detected automatically from your PDF, or type any size the pattern supports.

What the other apps don't do

Other Apps

– Type every row instruction manually
– No stitch count computation
– No pattern validation or scoring
– No garment schematic from stitch data
– No AI assistant that knows your pattern
– No voice commands for hands-free use
– No side-by-side PDF and tracker view
– One size at a time, start over to switch
– Monthly subscription required
– No quality guarantee

InterTwined

• Import PDF → automatic row extraction
• Every stitch count computed & verified
• 7-dimension quality score on every analysis
• Live garment schematic from real stitch data
• AI assistant with full pattern context
• Hands-free voice commands while you knit
• Side-by-side PDF + tracker on iPad & landscape
• Extract multiple sizes, switch with one tap
• No subscription — 3 free, then $4.99 per pack

Made for iPhone. Even better on iPad.

Everything works on your phone — but open InterTwined on iPad and you get the full workshop experience. Your pattern PDF on one side, your tracker on the other. Resize the split. See the garment schematic while you knit. It's the way pattern tracking should feel.

iPad split view — PDF and tracker side by side
iPad collection browse
iPad pattern detail with schematic

Also works in landscape on any iPhone — even the standard models. Turn your phone sideways and the split view activates automatically.

110+ curated patterns, ready to knit

Every pattern in the InterTwined collection has been AI-analyzed, quality-scored, and validated. Import one and start tracking immediately — no extraction credit needed.

125+
Curated Patterns
98%
A or A+ Quality
12
Categories
Sweaters Cardigans Hats Socks Shawls Cowls Blankets Amigurumi Mittens Bags Scarves Home Decor

Don't see your pattern? Import any PDF — DROPS, Yarnspirations, Ravelry downloads, Etsy designers. If it's a knitting or crochet pattern, InterTwined can read it.

No subscription. No surprises.

Every download includes 3 free pattern analyses. Need more? Buy credit packs — use them whenever you want, they never expire.

Our Promise

We're building this for crafters, not shareholders

Every dollar from credit packs goes back into expanding the curated pattern library — more patterns, better extraction quality, and a better app for you. We want to build the best crafting companion we can afford.

No venture funding. No ads. No subscription. Just a small team that knits.

Download Free
INCLUDED FREE
$0
Every download includes:
• 3 pattern extractions
• 25 assistant messages
• Unlimited row tracking
• Garment schematics
• On-device pattern pre-scan
• 110+ curated library
CREDIT PACKS
$4.99
4 extraction credits:
• ~$1.25 per extraction
• 25 assistant messages included
• Credits never expire
• No subscription
• Buy as many packs as you need
+1

Help us improve, earn a free extraction

Turn on anonymous metrics sharing in Settings and every pack becomes 5 credits instead of 4. We collect scores, error types, and pattern categories — never your PDF or instructions.

Exactly what we send — nothing more

This is the complete payload for a single extraction. What you see below is what we receive. There is no hidden data, no secondary collection, no device fingerprinting.

{
  "timestamp": "2026-04-08T22:30:00Z",
  "score": 94,
  "dimensions": {
    "stitch_math": 23,
    "section_integrity": 15,
    "size_consistency": 12,
    "chart_honesty": 9,
    "instruction_quality": 15,
    "shape_data": 10,
    "metadata": 10
  },
  "craft": "knitting",
  "category": "sweater",
  "pieces": 4,
  "sections": 12,
  "total_rows": 198,
  "parser": {
    "cast_on_found": true,
    "gauge_found": true,
    "multi_size": true,
    "pieces_detected": 4,
    "checkpoints": 27,
    "shaping_blocks": 9,
    "measurements": 6,
    "charts_referenced": 2,
    "atst_detected": true,
    "amigurumi_rounds": 0,
    "trajectory_built": true
  },
  "errors": ["chart_honesty_warning"],
  "prescreen_score": 4.3
}

Notice what's not here: no pattern name, no designer, no PDF content, no row instructions, no stitch counts from your pattern, no user ID, no device ID, no IP address. We can't identify you or your pattern from this data. We can only see: "a sweater with 4 pieces scored 94/100 and the chart dimension was slightly low."

Quality guarantee

Every extraction is validated and scored out of 100 across seven dimensions. You see the score and a detailed breakdown before you start knitting — full transparency on what the AI found.

— Extractions and assistant messages both use advanced AI models that cost us real money to run — there's no way around it. We price with modest margins to keep the lights on, not to profit off your craft. You're paying for the best models available, not a markup.

A problem decades in the making

Automated knitting pattern parsing has been called unsolvable. Here's why — and why we think we're close.

The academic attempts

In 2019, MIT's CSAIL published "Neural Inverse Knitting" — a system that could look at a photograph of knitted fabric and reverse-engineer the machine knitting instructions. Impressive, but it solved image-to-machine-code, not human-pattern-to-structured-data.

Other efforts formalized knitting as a topological problem — modeling yarn as curves in 3D space, building formal grammars for notation. Beautiful mathematics. None of it helps a knitter follow a DROPS pattern on a Tuesday night.

Why the apps gave up

KnitCompanion, Row Counter, StitchFiddle — every existing app requires manual entry. They're PDF readers with counters bolted on. One startup, Knitrino, attempted interactive patterns in 2020. Their founders said it plainly: "Each pattern has to be manually built by us." The problem beat them.

The seven hard problems

"AT THE SAME TIME" — Two shaping operations in parallel, described in prose. A parser has to merge two instruction streams into one row sequence. We built a merge algorithm for this.
Chart-only sections — Critical stitch data locked in visual grids that don't exist in the text.
Size interleaving — "Cast on 80(88,96,104) sts" — six sizes packed into parentheses identical to repeat notation.
Cumulative stitch math — "Dec 1 st each end every other row 5 times" requires tracking arithmetic across dozens of rows.
Measurement-based sections — "Work until piece measures 19cm" — no row count, you need gauge to compute it.
Six+ repeat formats — Every publisher writes repeats differently. DROPS hyphens, Yarnspirations parentheses, asterisks, prose.
Reverse shaping — "Work as for Left Front, reversing all shaping." One sentence requiring algorithmic mirroring of dozens of rows.

What changed

Large language models. Not as a magic wand — raw AI makes mistakes on stitch math. What works is a hybrid approach: a deterministic parser extracts every verifiable fact from the PDF (cast-on counts, gauge, checkpoints, shaping math), then feeds those as anchors to the most advanced AI models available. The parser keeps the AI honest. The AI handles the ambiguity the parser can't.

We validate every extraction across seven quality dimensions and score it out of 100. Today, 98% of patterns in our library score A or A+. The hardest patterns — DROPS sweaters with 8 charts and simultaneous shaping — went from failing grades to 97/100.

Two modes, one honest approach

Simple Mode — Default

What works today

Your original pattern text, organized by section, with a clean row counter and your PDF always visible beside it. The AI identifies your sections, row counts, gauge, and sizing — you follow your own pattern words. The app just keeps your place.

This is reliable, battle-tested, and works on every pattern we've thrown at it. Most knitters will be completely comfortable here.

Simple mode — section tracking with PDF
Advanced Mode — Available

Where we're headed

Row-by-row extracted instructions with computed stitch counts, shaping events highlighted, and a live garment schematic that tracks your position. Every row validated against the parser's checkpoints.

This works great on many patterns already. Stitch math validation is still being refined for the most complex designs — charts, parallel shaping, unusual notation. It's available now and improving with every pattern we see.

Advanced mode — row-by-row instructions

Both modes use the same AI extraction and the same credit. You choose which view fits your workflow — and you can switch between them anytime.

We think we're close. We need your help.

No one has shipped automated pattern extraction at this level before. We're confident in the engine, but every pattern is different — every designer has their own style, notation, and quirks. The more patterns our system sees, the better it gets.

That's where you come in. Import your patterns. Tell us when something doesn't look right. Every piece of feedback makes the extraction better for everyone.

You can also opt in to share anonymous quality metrics — just scores, error types, and pattern categories. No PDFs, no instructions, no personal data. This telemetry is how we see what's working and what's not at scale: which pattern types struggle, which validator dimensions fail most, where the parser needs tuning. It's the difference between guessing and knowing. As a thank you, every credit pack includes a bonus extraction when sharing is on.

You're not just using an app — you're helping solve a problem that researchers and developers have been working on for decades.

Join us — download free

4 extractions + 25 assistant messages included