Metric Conversion tool vs Thread Length Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Metric Conversion tool
This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.
- Offline functionality
- Over 30,000 unit conversions
- 160+ currencies with live rates
- Save favorite conversions
- Answers in fractions
- Up to 5 decimal places
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Unit converter App from the most popular metric conversions website in the world, metric-conversions.org. Over a billion visitors have used our website, try our app and see why we're so popular! FEATURES: Easy to use clear interface Works offline All popular unit conversions (over 30,000 of them) Over 160 currencies (including Bitcoin and other cryptocurrencies) with live exchange rates Store your favorite conversions for quick access Answers in fractions where needed. Obtain conversion results with up to 5 decimal places Imperial units split into other imperial units – so you can get a weight in stones and pounds, pounds and ounces, etc. Lengths break down into feet and inches, etc. WEIGHT: Kilograms, Pounds, Stones, Ounces, Grams, Carats, Grains, Hundredweights, Micrograms.Milligrams, Ounces, Pennyweights, Tons, Troy pounds, Troy ounces TEMPERATURE: Celsius, Fahrenheit, Kelvin, Rankine, Newton, Réaumur, Rømer, Delisle. LENGTH: Miles, Yards, Feet, Inches, Kilometers, Meters, Centimeters, Chains, Decimeters, Furlongs, Leagues, Lightyears, Microinches, Microns, Millimeters, Parsecs, Nautical Leagues, Nautical Miles. AREA: Square Miles, Acres, Square Yards, Square Feet, Square Inches, Square Kilometers, Hectares, Square Meters, Square Centimeters, Square Millimeters, Square Microns, Square Microinches. VOLUME: Cups, Tablespoons, Teaspoons, Gallons, Pints, Gills, Ounces , Cubic Meters, Liters, Centiliters, Milliliters, Cubic Yards, Barrels, Quarts, Gills. SPEED: Miles per hour, Kilometers per hour, Meters per second, Knots, Mach, Light speed and more. TIME: Seconds, Minutes, Hours, Days. ANGLE: Degrees, Radians, Minutes (Angular), Seconds (Angular), Centrad, Gradians, Milliradians, Sign PRESSURE: Atmospheres, Bar, Pascals, Pound Force per Square Inch, Inches of Mercury, Inches of Water, Kilogram Force per Square Meter, Millibar, Millimeters of Mercury, Millimeters of Water, Newtons per Meter Squared, Pounds per Square Foot, Torrs CURRENCY: All state sponsored world currencies as well as major crypto-currencies. If you need anything added, email us at appcontact@metric-conversions.org and we'll do our best to put them in for you!
Thread Length Calculator
This free tool helps leatherworkers accurately calculate the thread length required for their projects. It accounts for the number of holes, stitching length, and leather thickness, ensuring you always have enough material.
- Thread length calculation
- Supports any number of holes
- Accounts for stitching length
- Considers leather thickness
- Free to use
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Never be caught short again! Thread length calculator for All Leatherworkers! A Free and simple way to calculate the thread length needed for any number of holes, length of stitching or thickness of leather. No In App Purchases
Screenshots
Verdict
The clearest difference is review sentiment: Thread Length Calculator at 100% against Metric Conversion tool's 70%. Thread Length Calculator also leads on rating (5.0 vs 4.8) and iOS requirement (13.0 vs 15.1). Metric Conversion tool's advantage is ratings volume (15K vs 3). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Thread Length Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Metric Conversion tool has 15K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 70% of Metric Conversion tool's written reviews are positive against 100% of Thread Length Calculator's.
Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.
| Parameter | Metric Conversion tool | Thread Length Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (15K ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 70.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 15K — better | 3 |
| Update frequency | Every 10 days | Every 10 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Wight Hat | Nigel Armitage |
Customer experience
Metric Conversion tool
Thread Length Calculator
Bugs and requests
Metric Conversion tool
Reported bugs
2 issues- Temperature conversion displaying incorrect values
- Ads triggering false memory full warnings
Requested features
3 requests- Paid version to remove ads
- Option to display results in preferred format
- Speed conversion (mph, km/h, etc.)
Thread Length Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Metric Conversion tool
No in-app purchases
Thread Length Calculator
No in-app purchases
Questions
Is Metric Conversion tool free?
Is Thread Length Calculator free?
Which has better reviews, Metric Conversion tool or Thread Length Calculator?
Do Metric Conversion tool or Thread Length Calculator have ads?
Which is updated more often, Metric Conversion tool or Thread Length Calculator?
Other comparisons
