Knitting apps replace the scraps of paper, manual calculations, and mental row counting that knitters have relied on forever. A good app saves time and prevents mistakes. A bad one adds friction, buries features behind confusing menus, or nags you with subscriptions for basic functionality.
A good knitting app needs three core features: a row counter with multiple simultaneous counters, practical calculators (cast-on and yarn estimation at minimum), and offline access for the parts you use while knitting. App store rankings and feature lists change, so the better question is what to evaluate before you install one.
The features that matter most
Row counter
The feature most knitters download an app for in the first place. The baseline is simple: tap to increment, display the count. But the gap between a basic counter and a useful one is wide.
What separates a good row counter:
Multiple counters running simultaneously. For “at the same time” instructions (armhole and neckline shaping on different intervals), you need at least two independent counters. Top-down raglans with shaping on the body and sleeves at the same time can need four.
Project association. A counter that remembers which project it belongs to and lets you switch without losing your place. If you’re working on three things, resetting one counter shouldn’t erase the others.
Session history. Seeing how many rows you knitted in a session, and when you last worked on a project, helps track progress and pick up after a break. Useful when you put a project down for two months and need a hint about where you were.
Big tap targets. A counter button you can hit without looking, while your eyes are on the knitting, is the whole point. Tiny buttons that need precise tapping defeat the purpose. The best counters work as gesture taps anywhere on the screen, not just on a small icon.
A counter that’s just a number with a plus button is a timer on your phone: technically functional, practically insufficient.
Calculators
The ones knitters actually use:
Cast-on calculator. Gauge and desired width in, stitch count out. Saves mental math on every new project. The good ones also let you account for stitch pattern multiples (a cable that repeats every 8 stitches, a lace pattern that needs a multiple of 12 plus 3) so the result is a number you can actually use.
Yarn estimator. Project type, dimensions, and yarn weight in, total yardage out. Prevents the “will I have enough yarn” anxiety and the “I definitely don’t have enough yarn” reality. The smart ones add a buffer for swatching and finishing.
Increase/decrease calculator. Current stitch count and target changes in, spacing pattern out. Saves the division-with-remainder math that patterns expect you to do in your head.
Gauge calculator. Swatch measurements vs pattern requirements, tells you whether to adjust needle size.
Some apps bundle all of these. Others specialize. An app with a solid cast-on calculator and yarn estimator covers the two most frequent needs.
Yarn management
Digital yarn cards storing fiber content, weight, color, yardage, care instructions. Useful if your stash has any size to it, because you can check what you have without digging through bins. Filtering by weight category to find “all my DK stash” before starting a project is the feature that earns its keep.
The best versions make manual entry fast: duplicate an existing card, save common fields, and keep dye lot and care notes visible where you need them. The friction is real, so the app should make a yarn card feel closer to jotting down a ball band than filling out a database.
Whether you need this depends on scale. Five skeins? You remember. Fifty? A digital inventory saves trips to the yarn closet. Two hundred? The inventory is the only way to know what you own.
Offline access
Knitting happens in places without reliable internet: trains, planes, waiting rooms, the couch with patchy wifi. An app that needs a connection to show your row count or run a calculator fails at the moment you need it most.
Offline for core features (counter, calculators, yarn cards) should be standard. Not premium. An app that hides offline behind a subscription has misunderstood what knitters need.
Features that sound useful but often aren’t
Pattern storage and reading sounds good in theory: your pattern and counter in one place. In practice, reading a complex pattern on a phone screen is painful. Most knitters prefer a printed pattern or a tablet. The phone stays as counter and calculator.
Social features (feeds, progress sharing, community) rarely reach critical mass. Ravelry and Instagram already serve the knitting community well. A third social feed inside a counter app doesn’t add anything.
Stitch library animations look impressive in the app store listing but get opened once and forgotten. For learning a stitch, a YouTube video beats a looping animation on a small screen because you can see hand position, tension, and motion in real time.
Built-in timers, “smart” reminders to knit, and gamified streaks are productivity tropes that don’t translate well to a hobby. Knitting is the break from being nagged. Apps that try to gamify it usually get deleted.
Phone vs tablet
A phone is what you have in your pocket and is the natural home for the counter. A tablet is where pattern reading actually works. Many knitters use both: the phone tracks rows, the tablet shows the pattern PDF.
If you’re choosing one device for everything, a tablet wins for patterns and loses for portability. A phone wins for everything except reading. There’s no single right answer. The honest test: do you knit at home in one spot, or do you carry your project around?
Pricing models
One-time purchase is the most knitter-friendly model. Pay once, own the app. You’re not paying monthly for a row counter.
Subscription can be justified for genuinely premium features like a large pattern database, cloud sync, or advanced chart tools, but most knitters don’t need monthly access to a calculator. The math is worth running: even a small monthly fee becomes a yarn-sized expense over a year.
Check what the free tier includes and whether you’d actually use the paid features weekly. Apps often advertise their best features and then put them behind the highest tier. Read the in-app purchase list before installing.
Free with ads works but annoys. Ads in a row counter interrupt the flow. If ads pop up when you tap the counter, pay for the upgrade or find a different app.
Freemium (basic free, advanced paid) is reasonable if the free tier includes a usable counter and at least one calculator. Less reasonable if it locks everything behind a paywall and the “free” version is a demo.
Privacy and data
Knitting apps don’t need access to your contacts, location, or unrelated files for ordinary counting, calculation, and project-note features. If an app requests unrelated permissions, question why.
Your project data (row counts, yarn inventory, patterns) should be stored locally or backed up to standard cloud, not locked in a proprietary format. If you switch apps, your data should come with you. Export functions matter for the same reason backup matters: phones get lost or replaced, and three years of stash data shouldn’t disappear with the device.
Permissions should be tied to visible features and requested only when those features are used, not at install.
Platform fit
Availability is the first filter. A polished iPad app doesn’t help if you count rows on an Android phone, and an Android-only counter doesn’t help if your pattern lives on an iPad. Check the device you actually knit with, then compare the core features: counter, calculators, offline access, export, and backup.
The practical test is not which platform has the prettier listing. It is whether the app behaves naturally on your device: large tap targets, predictable back navigation, useful notifications, and no need to move between devices every other row.
What KnitTools includes
Full disclosure: this is the KnitTools website.
KnitTools is being built as an Android toolkit for project tracking, row counting, calculation, and reference lookup. The goal is to keep the common knitting tasks in one place: multiple simultaneous counters, project notes, saved patterns, calculators, and reference material for needle sizes, yarn weights, abbreviations, and size charts.
It is designed as a practical toolkit rather than a single-purpose counter, so project tracking, counting, calculation, and reference lookup fit the same working rhythm.
FAQ
Do I need a knitting app at all? No. Knitters managed with paper and pencil for centuries. An app is a convenience. If your current system works (tick marks on the pattern, mental math, a notebook for your stash), there’s no reason to change. Apps are most useful for knitters juggling multiple projects, doing calculation-heavy work (garment design, yarn substitution), or wanting to track their stash digitally.
Can I use multiple knitting apps together? Sure. Some knitters use one for the counter and another for calculations, or an app plus Ravelry for pattern management. No requirement to consolidate. But a single app that handles core functions is simpler, and switching between three apps mid-pattern is its own kind of friction.
Are there good free knitting calculators online? Yes. The Cast On Calculator and Yarn Estimator on this site are free, browser-based, and don’t need an account or install. For occasional use, perfectly adequate. The browser tools won’t track your projects across sessions, which is where an installed app earns its place.
What about Ravelry? Ravelry is a large fiber community, notebook, and pattern/yarn database. Different category from a toolkit app. It is strongest for pattern discovery, project logging, stash notes, yarn data, and community context. A row counter and calculator app serves a different job, so the two can complement each other.
What about smartwatch counters? Convenient for hands-free counting, especially if you don’t want to put down your work. The downsides are the small screen, limited controls, and battery drain if you tap a lot. Useful as a supplement, not a replacement, for an app on a larger device.