Best Unit Converter All alternatives: apps like Unit Converter All-In-One Eng+

22+ similar apps compared and reviewed

4.4 avg rating
7 free apps
Updated November 2026

Unit Converter All is great, but it's not the only option. Explore 22+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to Unit Converter All

4.1(10 ratings)
FreeIn-App Purchases
Calculator Silver Lite screenshot 1
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This app offers a robust calculator experience with advanced features like printing and emailing calculation history, a backspace key for corrections, and customizable display options. It allows for easy copying and pasting of numbers to other applications and supports displaying calculations on external monitors.

Gas Checker#2

Gas Checker by GasSoft limited

Software for Gas Engineers
Strong Contender
🔧 Utilities
5.0😐(1 ratings)
Free
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Streamline your gas and heating business with digital reporting and invoicing. Automate customer reminders, create PDF reports, and integrate with accounting software. Eliminate paper forms and manage all your job documentation efficiently.

What We Love

  • 👍 Easy to use
  • 👍 Makes life easier
  • 👍 Great for gas engineers
  • 👍 Saves time and paper
  • 👍 Good value
  • 👍 Excellent customer service
  • 👍 Brilliant for gas safety and invoicing
  • 👍 Intuitive and saves time
  • 👍 Regularly updated
  • 👍 Well worth the money
  • 👍 First-class app support
  • 👍 Easy to navigate
  • 👍 Does everything needed
  • 👍 Fantastic time saver
  • 👍 Helps business grow
  • 👍 Top quality features
  • 👍 Essential business tool
  • 👍 Becoming biggest revenue earner
  • 👍 Great reminders for renewals
  • 👍 Issues dealt with promptly
  • 👍 Developers implement feedback
  • 👍 Exceptional app
  • 👍 Great development team
  • 👍 Tidy and very good
  • 👍 Impressive invoicing
  • 👍 Great quotation option
  • 👍 Tech backup instant
  • 👍 Awesome app
  • 👍 Best app ever used
  • 👍 New update fantastic
  • 👍 Works brilliantly
  • 👍 Can't fault it
  • 👍 Lost without this app
  • 👍 Very good app
  • 👍 Great product
  • 👍 Does what it says
  • 👍 Excellent software
  • 👍 Reminder feature useful
  • 👍 Awesome app helps business
  • 👍 Great wee app
  • 👍 Keeps track of work
  • 👍 So good for agents
  • 👍 Love it

Room to Improve

  • 🐛 Software difficulties
  • 🐛 Bugs here and there
  • 🐛 Latest bug: cannot open on iPad
  • 🐛 Contradictory tech advice
  • 🐛 App crashes instead of opening
  • 🐛 Still waiting for update to fix last update
  • 🐛 Can't get past profile picture
  • 🐛 Cancel/close buttons not working
  • 🐛 Imported files lack names/addresses
  • 🐛 Support not helpful
  • 🐛 Faults since update
  • 🐛 Can't use after update
  • 🐛 Massive price hike
  • 🐛 Incorrect dates on certs
  • 🐛 Looks unprofessional
  • 🐛 Very slow since last update
  • 🐛 Issues raised, nothing done
  • 🐛 Limited invoicing text
  • 🐛 Emails go to junk/returned
  • 🐛 Software saves duplicate contacts
  • 🐛 Desktop figures don't match app
  • 🐛 Corrupted files mess with syncing
  • 🐛 Contacts disappear from app
  • 🐛 Some issues not remedied
  • 🐛 Don't rely for invoicing/accounts
  • 🐛 Crashes frequently while filling jobs
  • 🐛 Makes work dreadful
  • 🐛 Getting more unreliable
  • 🐛 App freezes/unresponsive
  • 🐛 Have to delete/re-download
  • 🐛 Losing important information
  • 🐛 Searching crashes app
  • 🐛 Invoices blank/error.xero
  • 🐛 Quotes/receipts don't send
  • 🐛 Fed up with unreliability
  • 🐛 No response from support
  • 🐛 Considering alternatives
  • 🐛 Desktop site not well planned
  • 🐛 Page needs to reload often
  • 🐛 Can't send multiple PDFs from desktop
  • 🐛 Reminders don't work well
  • 🐛 Shows outstanding jobs incorrectly
  • 🐛 App doesn't update engineer details
  • 🐛 Lost history of certificates
  • 🐛 Not impressed
  • 🐛 Loses certificates written
  • 🐛 Have to start again
  • 🐛 Don't find out till later
  • 🐛 Certificate lost
  • 🐛 Too complicated and confusing
  • 🐛 Stupid and too complicated
  • 🐛 Software always crashing
  • 🐛 Records deleted
  • 🐛 No reply from support
  • 🐛 Very unprofessional
  • 🐛 Doubled price after 12 months
  • 🐛 Records deleted upon non-renewal
  • 🐛 Records are property of user
  • 🐛 Caused problems with renewals
  • 🐛 Clunky and non-intuitive UI
  • 🐛 'Done' button appears to do nothing
  • 🐛 Constantly has glitches
  • 🐛 No support, no call backs
  • 🐛 Caused database problems
  • 🐛 Buggy software
  • 🐛 Lacks basic features
  • 🐛 Cannot edit paid invoices
  • 🐛 Support response time slow
  • 🐛 Not updated for ages
  • 🐛 Last update ruined it
  • 🐛 Useful features disappeared
  • 🐛 Credit card payment facility pointless
  • 🐛 Subscription price more than doubled
  • 🐛 Average at best
  • 🐛 Breakdown repair paperwork could be shorter
HVAC Formulas Tech Calculator#3

HVAC Formulas Tech Calculator by Sergio Bost

Reference for technicians
Worth Considering
🔧 Utilities
3.7(15 ratings)
Free
HVAC Formulas Tech Calculator screenshot 1
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This app provides a comprehensive collection of HVAC formulas for technicians. It simplifies complex calculations for heating, ventilation, and air conditioning systems, saving time and effort compared to manual methods or general calculators. Designed by an industry professional, it offers an easy-to-use interface for quick access to essential formulas.

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