Comparison

Roof Guide vs 2FA Authenticator

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

Head to head
About

Roof Guide

This app provides specialized calculators for roofing, framing, decking, stairs, and concrete projects. It helps construction professionals estimate quantities, costs, and set out materials accurately using US or metric measurements.

Highlights
  • Roof framing calculations
  • Decking and flooring estimator
  • Stud wall setout and costing
  • Stair framing calculations
  • Concrete volume and cost estimator
  • Metric and imperial unit conversion
Features
Read full description

Roofing and framing carpentry calculator, decking, stairs, concrete, stud wall calculators. In addition to the roof calculators the decking / flooring, stud wall and concrete calculators also estimate quantities and costs. US or metric measurements. Developed by a carpenter and builder, used by carpenters, roofers, contractors, builders and construction pros in over 40 countries around the world. Roof Guide (previously Roofers Guide) is not a 'How to App’ - you know how! It is designed to save you the time and effort required for roof, framing, deck, stairs & other building / construction calculations Accurate, reliable and easy to use, it is an indispensable tool for the construction pro. Metric or Imperial (feet, inches and fractions of an inch (or decimal) Print, email or reports. Never forget your span or rafter tables, red roofing book and other standalone construction calculators again! CALCULATIONS INCLUDE: ROOF FRAMING:- - Rafter,Hip/Valley Lengths - Multiple cut angles, including for compound saw - Template (adjustable) sizes for the same cuts - where used - Setout of Creepers/Jack Rafters(US), ridge and wall - Roof Pitch Factor degrees, inches (US), D:M:S - Rise : Run ratio - Birdsmouth calculations - Drop or Chamfer Hip adjustments - Multiple heights measures, including:- top/bottom of ridge, roof centre, - Hypotenuse calculations eg: Calculate Pitch from ridge rise - Adjust pitching plate heights where one wall is higher eg Bulkheads - Ridge length, area, rake factors - Print, email or message reports DECKING & FLOORING SETOUT, MATERIAL ESTIMATING and COSTING:- - Options for Insets, single or double bearers - Set Spacing type to maximum, fixed or equal - Set pricing for materials / labour to calculate cost and cost/area TIMBER SETOUT:- - Set Spacing type to maximum, fixed or equal - Insets at start and end. STUD WALLS SETOUT, MATERIAL ESTIMATING and COSTING:- - Raked or flat walls - Sizing, Quantity & Cost Estimates - Timber (studs, noggins, plates) & Sheeting - Comprehensive setout lists - bottom, top - Align sheets on width, length or no sheets STAIR FRAMING (currently for single stair runs):- Permits Multiple restrictions on risers, treads, inclines and also allows application of 2R+G (2R+TD in US) in jurisdictions required - to meet standards. Other than StairCalc (which is our Stair only app) we do not know of an app that does this simultaneously. Also calculations allow for situations where the overall stair rise and run are fixed or variable allowing maximum flexibility. - Number and size of step risers, treads, step inclines, - Step incline (Also changeable), - Stairwell opening, - Stringer Lengths CONCRETE CALCULATOR / ESTIMATOR:- - Calculate quantities for slabs, footings, round and rectangular/square holes. - Estimates total volume and cost allowing for waste. CONVERTER:- - Convert Lengths, Area, Volume: Metric and US/Imperial. - Work in Decimal units or Yds/Ft/In/Fraction format to Metric, decimal US. EASY TO USE GENERAL CALCULATOR WITH TAPE: - Calculate (add, subtract etc) directly in feet / inches / fractions or decimals. - Common functions for quick calculation EXTENSIVE HELP: Extensive help - Tap twice on most buttons for more info. Optimised for all iPhones and iPads in portrait mode. INFOGUIDE: Infoguide is part of a small building firm based in Western Australia. This app was created by a former Roof Framing Carpenter for our team of carpenters. We use it and believe it will be as helpful to other carpenters as it was for us. Terms of Service: http://www.apple.com/legal/itunes/appstore/dev/stdeula

About

2FA Authenticator

This app securely manages verification codes for your online accounts. It generates one-time passwords (OTP) and keeps your data private with no tracking or external servers. Enjoy a fast, simple, and reliable authentication experience.

Highlights
  • Securely manage verification codes
  • Generate one-time passwords (OTP)
  • Privacy-first experience with no tracking
  • Add accounts via QR code scanning
  • Offline-first functionality
  • Face ID/Touch ID protection
Features
Read full description

TrueAuth is a private 2FA authenticator that helps you securely manage verification codes for your online accounts. Add accounts in seconds, generate secure one-time passwords (OTP), and keep control of your data with a clean, privacy-first experience. No accounts. No tracking. No external servers. Just simple, reliable authentication - built with privacy at its core. Designed for control - No sign-up required - No data collection - No third-party servers - Your codes never leave your device You stay in full control - always. Fast, simple, effortless - Scan QR codes to add accounts instantly - Generate secure 2FA codes every 30 seconds - Tap to copy codes instantly - Clean, distraction-free interface built for speed Everything is designed to get you in and out - instantly. Built for real-world use - Mark important accounts as favourites - Reorder your accounts to match your workflow - Smooth, responsive interface with zero clutter - Designed to feel fast, fluid, and premium No friction. No wasted time. Security you can trust - Securely stored in Apple’s Keychain - Face ID / Touch ID protection - Offline-first - works without internet - No cloud dependency or external access Your data stays exactly where it should - with you. No clutter. No compromises. TrueAuth focuses on what matters: speed, privacy, and reliability - without unnecessary complexity.

Screenshots

Roof Guide4 screens
2FA Authenticator4 screens

Verdict

The call

The clearest difference is review sentiment: 2FA Authenticator at 100% against Roof Guide's 64%. 2FA Authenticator also leads on monetization model (free vs free with in-app purchases) and iOS requirement (17 vs 26.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Roof Guide sells 4 in-app purchases, starting at $1.99 per month and 2FA Authenticator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Roof Guide ships an update every 2 weeks, 2FA Authenticator monthly. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Roof Guide versus 2FA Authenticator: the parameters behind the verdict, then further details
ParameterRoof Guide2FA Authenticator
PriceFreeFree
Rating4.0 (19 ratings) — better—
Positive reviews63.6% of reviews100.0% of reviews — better
Number of ratings19 — better—
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017 — better
Further details — not scored
Size31 MB5 MB
Age rating4+4+
DeveloperInfoguide Pty LtdThomas Weschke

Customer experience

Roof Guide

All ratings19 ratings
Positive73.7%
Neutral0.0%
Negative26.3%
Written reviews11 reviews
Positive63.6%
Neutral0.0%
Negative36.4%

2FA Authenticator

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Roof Guide

Subscriptions3
  • Monthly$1.991 Month
  • 6 Months$7.996 Months
  • Annual$12.991 Year
One-time1
  • Lifetime License$29.99
1 purchases

2FA Authenticator

One-time1
  • TrueAuth Pro$4.99

Questions

Is Roof Guide free?
Roof Guide is free to download, with in-app purchases available.
Is 2FA Authenticator free?
2FA Authenticator is free to download, with in-app purchases available.
Do Roof Guide or 2FA Authenticator have ads?
Neither Roof Guide nor 2FA Authenticator shows ads.
Which is updated more often, Roof Guide or 2FA Authenticator?
Roof Guide ships an update every 2 weeks, and 2FA Authenticator monthly. Most recently, Roof Guide was updated on November 1, 2026 and 2FA Authenticator on November 5, 2026.

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