Metric Conversion tool vs Flange Bolt Size & Torque
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
Read full descriptionHide full description
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!
Flange Bolt Size & Torque
Instantly access flange, pipe, and bolt data offline. Quickly find bolt sizes, torque patterns, flange dimensions, and pipe specifications. Ideal for pipefitters and steamfitters needing rapid access to piping information.
- Offline data access
- Instant data lookups
- Flange bolting data
- Flange dimensions data
- Pipe data
- Gasket data
- Torque pattern images
Read full descriptionHide full description
Lookup flange, pipe, and bolt data in seconds with Flange Bolt Chart. All data is available offline, lookups are instantaneous. Here's just a sample of the available data. Flange bolting data: 1. Number of bolts 2. Diameter of bolts 3. Length of bolts 4. Wrench size 5. Torque pattern 6. Target torque Flange dimensions data: 1. Outside diameter of flange 2. Flange thickness 3. Diameter of bolt circle 4. Flange weight Pipe data: 1. Outside diameter 2. Wall thickness 3. Schedule 4. Weight 5. Weight with liquid Gasket data: 1. Gasket inside diameter 2. Gasket outside diameter 3. Spiral wound dimensions 4. Type R ring dimensions And many more fields. All values are calculated or sourced directly from official standards like ASME B16.5 "Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard". Looking up flange, pipe, and bolt data with Flange Bolt Chart is far faster and less error prone than searching through PDF charts and tables. The sole purpose of the tool is to make it as simple as possible for pipefitters, steamfitters, and others working in piping to look up piping information like flange bolt size and torque pattern. Is there a feature you'd like from Flange Bolt Chart that you don't see? Request it through the app and we'll do our best to add it to the development schedule. Features of the app: 1. Full offline capability: No internet connection necessary to use. All data is stored locally on your phone. (The app requires minimum storage space overall) 2. Instant data lookups. Just enter the necessary inputs (like nominal pipe size and flange class) and the app instantly populates the correct values for the flange, pipe, or bolt outputs you’re searching for. 3. Flange torque sequence images: Includes the full list of torque sequences in picture form, with the studs numbered. The information in this app covers, but is not limited to: (1) flanges with rating class designations 150, 300, 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 60 and flanges with rating class designation 2500 in sizes NPS 1/2 through NPS 12, with requirements given in U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units; (2) flanged fittings with rating class designation 150 and 300 in sizes NPS 1/2 through NPS 60, with requirements given in U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units; (3) flanged fittings with rating class designation 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 60 and flanged fittings with rating class designation 2500 in sizes NPS 1/2 through NPS 12 in U.S. Customary units. Covers 4 bolt to 60 bolt sequences. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Metric Conversion tool at none against Flange Bolt Size & Torque's 2. Metric Conversion tool also leads on ratings volume (15K vs 373) and rating (4.8 vs 4.6). Flange Bolt Size & Torque's advantage is ads (none vs shown). On price, review sentiment, device support and iOS requirement 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. Flange Bolt Size & Torque sells 2 in-app purchases, starting at $4.99 per 3 months. Metric Conversion tool asks for nothing beyond the download.
Metric Conversion tool holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Metric Conversion tool has 15K ratings behind it against 373, so its average is the more settled of the two. Written reviews point the same way: 69% of Metric Conversion tool's written reviews are positive against 65% of Flange Bolt Size & Torque's.
Metric Conversion tool ships an update fortnightly, Flange Bolt Size & Torque monthly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Metric Conversion tool | Flange Bolt Size & Torque |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (15K ratings) — better | 4.6 (373 ratings) |
| Positive reviews | 69.2% of reviews — better | 65.2% of reviews |
| Number of ratings | 15K — better | 373 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 57 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Wight Hat | Open Source Consulting LLC |
Customer experience
Metric Conversion tool
Flange Bolt Size & Torque
User reviews
Metric Conversion tool
From 15K App Store ratingsWhat we love
- 💡 Useful conversion tool
- 👍 Easy to use and navigate
- 🚀 Quick and efficient
- 👍 Comprehensive coverage of conversions
Room to improve
- 🔊 Intrusive and loud ads
- 🔒 Questionable privacy practices
- 🐛 Inaccurate conversions
- 👎 Disruptive to workflow
Flange Bolt Size & Torque
From 373 App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Huge time saver
- ✅ Reliable data
- 🛠️ Very helpful tool
- 💡 Useful for trade/craft
Room to improve
- 💸 Now charges for features
- 👎 Used to be better
- 📉 Functionality decreased after redesign
- ❌ Missing Code 61/62 flange info
- 💰 Subscription model disliked
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.)
Flange Bolt Size & Torque
Reported bugs
6 issues- App stopped working, requires resubscription
- App will not open after latest update
- App is broken
- Black screen and grey bar in the middle
- Wrench sizes don't match up on some flanges
Show 1 moreShow fewer
- Torque patterns on some flanges are off
Requested features
7 requests- Add Code 61/62 flange information
- Include machined bolt sizes
- Add torquing equipment info (rad guns, J gun, etc.) and usage instructions
- Include CGI and CG torque specs for different gasket styles
- Add support for larger flange sizes (beyond 60")
Show 2 moreShow fewer
- Add RTJ selection
- Availability on Windows tablet
In-app purchases
Metric Conversion tool
No in-app purchases
Flange Bolt Size & Torque
- Flange Bolt Professional$4.993 Months
- Suggested Torque$0.99
Questions
Is Metric Conversion tool free?
Is Flange Bolt Size & Torque free?
Which has better reviews, Metric Conversion tool or Flange Bolt Size & Torque?
Do Metric Conversion tool or Flange Bolt Size & Torque have ads?
Which is updated more often, Metric Conversion tool or Flange Bolt Size & Torque?
Other comparisons















