StashBot vs YarnMath Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StashBot
This app helps knitters and crocheters calculate precise yarn quantities needed for projects, preventing overspending or underbuying. It supports various garment types, sizes, and provides requirements in both yards and meters.
- Yarn quantity calculation
- Project yardage estimation
- Supports various garment types
- Multiple size options
- Imperial and metric measurements
- Yarn shopping companion
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What people are saying: "StashBot is that perfect combination of grace, functionality, and ease-of-use. Behind the pretty face, though, an intelligent engine delivers numbers you can trust. Unless you're a math genius with all the charts in your mind, this is the best $5 you'll ever spend on a knitting app." - Clara Parkes, Knitter's Review "StashBot is as pretty as it is clever." - Meghan Fernandes, Pom Pom Quarterly "Yardage requirements never looked so good." - Amy Herzog, CustomFit Buy yarn....smarter. StashBot is your yarn shopping companion! When you find a yarn you can't live without, use StashBot to figure out how much to buy. StashBot will pay for itself again and again as it saves you from buying more yarn than you need you need. At the same time, it ensures you will purchase enough yarn to knit the sort of projects you like. StashBot includes yarn requirements averages for gauges 3 - 8 sts per inch / 2.5 cm. Categories include: - Vests, shrugs and sweaters (cropped, average and tunic length) in size 3 months - 62" / 157cm bust circumference. - Hats, socks, and mittens in sizes Baby, Toddler, Child, Adult & XL Adult. - Scarves, shawls, and infinity cowls in 3 typical dimensions. All yarn requirements are presented in both YARDS and METERS, and you can easily switch back and forth between imperial and metric measurements. YARN SHOPS: This is a great tool for you shop as it encourages knitters to purchase sweater quantities of yarn!
YarnMath Studio
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YarnMath Studio – Yarn, Project and Pattern Organizer YarnMath Studio helps knitters and crocheters plan projects, organize yarn stash entries, store patterns, and track progress in one place. Alongside smart calculators for yarn estimates, gauge adjustments, and yarn substitution, it gives you a practical workspace for your making life. No more guessing yarn amounts, losing track of materials, or juggling project notes across different apps. Perfect for sweaters, shawls, scarves, hats, blankets, socks, and more. Features • Estimate yarn for projects • Adjust patterns to your gauge • Compare and substitute yarn • Supports knitting and crochet • Organize your yarn stash • Create and manage projects • Store and view pattern files • Track your place while working • Favorites for projects and patterns • Statistics and goals • Metric and imperial units • Multi-language support Whether you're planning your next sweater, organizing your stash, or following a pattern in progress, YarnMath Studio gives you a clean and practical workspace for knitting and crochet. Terms of Use (EULA): https://yarnmath.app/terms Privacy Policy: https://yarnmath.app/privacy
Screenshots
Verdict
The clearest difference is price: YarnMath Studio at Free against StashBot's $4.99. YarnMath Studio also leads on update cadence (monthly vs every 11 months) and device support (3 vs 1). StashBot's advantage is in-app purchases (none vs 2). On ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
YarnMath Studio is free to download; StashBot costs $4.99 up front. YarnMath Studio sells 2 in-app purchases, starting at $3.99 per month. StashBot asks for nothing beyond the download.
StashBot ships an update every 11 months, YarnMath Studio monthly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | StashBot | YarnMath Studio |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.8 (325 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 325 — better | — |
| Update frequency | Every 11 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Applorium Ltd | SERAP ERKORKMAZ KADOGLU |
Bugs and requests
StashBot
Reported bugs
2 issues- Not updating for iPhone X and over display
- App will not open on iPhone 6s running iOS 9.1
Requested features
14 requests- Switch between knit and crochet
- Add cowls and different scarf types
- More categories/options for summer items (shirts, tanks)
- Add baby blankets
- Add afghans
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- Add blankets/throws
- Add more clothing options
- Add more project options
- Add feature to enter yards per skein
- Support for super bulky yarn tensions (smaller than 3)
- Accommodations for different stitch densities (stocking, garter, lace, seed, rib)
- Consider adding an accurate measuring tape feature
- Add weight (oz/grams) input for yarn
- Support for different yarn weights (yds/100g or ypp) for spinners
YarnMath Studio
Not enough reviews yet to summarise bugs or requests.
In-app purchases
StashBot
No in-app purchases
YarnMath Studio
- Unlock YarnMath Studio Pro$3.991 Month
- Unlock YarnMath Studio Pro$29.991 Year









