Comparison

Think Safe vs Knit&Calc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Think Safe

Features
Read full description

Think Safe is a personal diary app that allows you to express your feelings and intimate notes, which can include pictures, automatic location, and date. Built-in search and sharing facilities allow you to find, and use other apps with your entry's content. Available as In-App Purchase are the following features: * Allow for extra security pin / password * Any change in default settings such as automatic date/location, notes arrangement and ordering (list or grid), security pin.

About

Knit&Calc

Manage your yarn stash, organize knitting projects, and save patterns. Features smart calculators for yarn needs and stitch distribution, plus a digital ruler. Supports multiple languages and units.

Highlights
  • Yarn stash management
  • Project organization
  • Pattern saving and categorization
  • Yarn and stitch calculators
  • Digital ruler
  • Data backup and import
  • Multilingual support
Features
Read full description

KnitAndCalc is the ultimate app for everyone who loves to knit! Design your own patterns and colorwork charts, keep track of your yarn stash, organize projects, save patterns, and use smart calculators that make knitting easier. PATTERN DESIGNER • Design your own sweater, scarf or socks • Choose neckline, sleeves, fit and edges, and see the garment on the figure • Get a schematic with finished measurements and a pattern written for your size and gauge • See how much yarn you need, and add the design as a project CHART DESIGNER • Draw colorwork charts in a stitch grid • Place the chart as a border on the yoke, body or sleeve in the pattern designer • Knit straight from the chart, or share it as a PDF or image YARN ALTERNATIVES • Find a substitute among almost 1,500 yarns • Advanced search by gauge, fiber, needle size, yardage, weight and superwash KNITTING MODE • A row ruler that follows you row by row in your pattern • Choose start row and counting direction • The screen stays on while you knit SEND PATTERNS • Send this page, selected pages (for example "2–5, 8") or the whole pattern • As a PDF or images, with or without your own markings YARN STASH • Register all your yarn with brand, type, color and color number • Keep track of weight, length and number of skeins • See how much yarn is reserved for projects • Grouping by brand and type for easy overview • Tracking history for used yarn PROJECTS • Organize your knitting projects • Link yarn from stash to projects • See overview of reserved yarn with % of stash • Connect patterns to projects • Add row counters for easy progress tracking • Register needle size, gauge and size • Keep track of start date and finish date PATTERNS • Save patterns as PDF, images or website links • Organize in categories (sweaters, pants, hats, socks, mittens, or custom) • Search and filter among your patterns • Connect patterns directly to projects YARN CALCULATOR • Calculate how much yarn you need when switching to another yarn with different yardage • Enter pattern yarn and the yarn you want to use • Get immediate calculation of number of skeins you need STITCH CALCULATOR • Generate instructions for even distribution of increases or decreases • Calculate how to distribute stitch changes across a needle • Perfect for when the pattern says "increase/decrease evenly distributed" • Shows step-by-step instructions with checkboxes RULER • Built-in digital ruler • Support for both centimeters and inches • Correct scale on newer iPhone and iPad, with an adjustment for phone cases • Perfect for measuring gauge and projects BACKUP & IMPORT • Export all data as JSON backup • Optionally include images and PDF files (Base64) • Import backup to restore data • Share backup between devices MULTILINGUAL • Norwegian, English, Swedish, Danish, Finnish, German and French • Easy to switch language in settings METRIC & IMPERIAL • Support for both metric (m/g) and imperial (yd/oz) units • Easy to switch in settings PRIVACY • Your yarn, projects and patterns are stored on your device • You choose what is shared, and you can delete your data in Settings KnitAndCalc is made by knitters for knitters, with focus on simplicity and functionality. Perfect for both beginners and experienced knitters who want better control over yarn stash, projects and tools. Download today and get full control of your knitting hobby!

Screenshots

Think Safe2 screens
Knit&Calc4 screens

Verdict

The call

The clearest difference is price: Think Safe at Free against Knit&Calc's $3.99. Think Safe also leads on iOS requirement (12.1 vs 15.6). Knit&Calc's advantage is in-app purchases (none vs 1) and update cadence (every 5 days vs every 28 months). On ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Think Safe is free to download; Knit&Calc costs $3.99 up front. Think Safe sells 1 one-off in-app purchase. Knit&Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Think Safe ships an update every 28 months, Knit&Calc every 5 days. The most recent releases landed on October 26, 2026 and November 5, 2026 respectively.

Scorecard4 real differences Ā· 4 level
Think Safe versus Knit&Calc: the parameters behind the verdict, then further details
ParameterThink SafeKnit&Calc
PriceFree — better$3.99
Positive reviews—100.0% of reviews
Update frequencyEvery 28 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better15.6
Further details — not scored
Size3 MB22 MB
Age rating4+4+
DeveloperEmidio CunhaMorten Punnerud

In-app purchases

1 purchases

Think Safe

One-time1
  • Features Unlock$1.99
None

Knit&Calc

No in-app purchases

Questions

Is Think Safe free?
Think Safe is free to download, with in-app purchases available.
Is Knit&Calc free?
Knit&Calc costs $3.99, with no in-app purchases.
Do Think Safe or Knit&Calc have ads?
Neither Think Safe nor Knit&Calc shows ads.
Which is updated more often, Think Safe or Knit&Calc?
Think Safe ships an update every 28 months, and Knit&Calc every 5 days. Most recently, Think Safe was updated on October 26, 2026 and Knit&Calc on November 5, 2026.

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