Pipe Tools vs Bolt Length
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pipe Tools
This app provides a comprehensive steel pipe handbook with charts for wall thickness, mass, and pressure calculations. It facilitates quick conversions and cost comparisons, allowing users to prepare and send customized PDF quotes for pipe sales.
- Steel pipe charts (wall thickness, mass)
- Unit conversions (feet, meters, pounds, kg)
- Pipe cost comparison
- Customizable PDF quote generation
- Mechanical and hardness conversions
- Pressure and wall thickness calculations
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Steel Pipe Handbook that fits in your pocket! Great tool for pipe purchasers & sales, pipe manufacturers, pipe yard inspectors, fabricators, oilfield workers, NDE techs, truck operators, designers, heat treaters, and engineers. Steel pipe charts for wall thickness (inch & mm) and pipe mass (lb/ft and kg/m) from ASME B36.10M, and casing and tubing charts from API 5CT. Quick conversion between feet, metres, pounds, kilograms, CWT, net tons, metric tonnes for any pipe size. Compare pipe costs $/ft, $/m, $/lb, $/kg, $/CWT, $/net ton, $/metric tonne for your pipe size. Prepare quotes for pipe sales and send customized pdf to your customers - all from within the app! Info from various pipe specs (ASTM, CSA, API, NACE) Mechanical conversions (for strength & toughness). Calculator for Carbon Equivalents. Hardness conversions (scales include HRBW, HRC, HV, HBW, UTS) Calculate the weight of a truckload of steel pipe. Check typical AISI alloy content. Calculate the weight & buoyancy of pipe including its coatings and contents. Calculate ASME B31.3 maximum pressures and minimum wall thicknesses. www.bri-steel.com sales@bri-steel.com 2020 Bri-Steel Manufacturing, All Rights Reserved
Bolt Length
This application helps calculate the length of metric coarse screws based on Japanese Industrial Standards. It is designed for mechanical design purposes and should be used at the user's own risk.
- Metric coarse screw length calculation
- Conforms to Japanese Industrial Standards (JIS)
- Designed for mechanical design
- User risk disclaimer
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This app is an application for calculating the length of the screw. ※:This app does not guarantee the effectiveness of the combination. ※:Use this application at your own risk. Conforms to the Japanese Industrial Standards (JIS). Screws are all metric coarse screw. For mechanical design. Sorry, Only in Japan.Because using the JIS.
Screenshots
Verdict
The clearest difference is review sentiment: Pipe Tools at 79% against Bolt Length's 33%. Pipe Tools also leads on rating (4.2 vs 3.0) and ads (none vs shown). On price, update cadence, in-app purchases and device support 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. Pipe Tools sells 1 one-off in-app purchase and Bolt Length sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Pipe Tools holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: Pipe Tools has 20 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 79% of Pipe Tools's written reviews are positive against 33% of Bolt Length's.
Pipe Tools ships an update every 36 months, Bolt Length every 20 months. Both last shipped on October 8, 2026.
| Parameter | Pipe Tools | Bolt Length |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (20 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 78.6% of reviews — better | 33.3% of reviews |
| Number of ratings | 20 — better | 2 |
| Update frequency | Every 36 months | Every 20 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 14.0 — better |
| Further details — not scored | ||
| Size | 43 MB | 6 MB |
| Age rating | 17+ | 4+ |
| Developer | Bri-Steel Manufacturing | mitsunori oishi |
Customer experience
Pipe Tools
Bolt Length
In-app purchases
Pipe Tools
- Unlock Pro Tools$0.99
Bolt Length
- Hide Ads$1.99
