Apps by Armchair Engineering
-
Temperature Converter
Utilities
4.77
(8,020 worldwide)
Free
IAP
Released Jul 2011
· updated Jun 2026
-
Trigonometry Help Lite
Education
4.70
(2,532 worldwide)
Free
IAP
Released Jun 2019
· updated Dec 2019
-
Trigonometry Help
Utilities
4.75
(1,349 worldwide)
$1.99
Released Dec 2010
· updated Nov 2019
-
Character Pad
Utilities
4.51
(906 worldwide)
Free
IAP
Released Feb 2011
· updated Dec 2019
-
Temperature Converter Classic
Utilities
4.77
(792 worldwide)
Free
IAP
Released Feb 2011
· updated Apr 2019
-
Mexican Pesos To US Dollars
Utilities
4.80
(778 worldwide)
$1.99
Released Feb 2016
· updated Aug 2025
-
Rafter Help
Utilities
4.61
(629 worldwide)
$1.99
IAP
Released Jun 2015
· updated Nov 2019
-
Quick Commodities
Reference
4.32
(586 worldwide)
Free
IAP
Released Jan 2016
· updated Aug 2025
-
Wallpaper Maker - Notched
Photo & Video
4.49
(425 worldwide)
Free
IAP
Released Nov 2017
· updated Jun 2026
-
Stair Help
Utilities
4.48
(406 worldwide)
$1.99
IAP
Released Aug 2015
· updated Nov 2019
-
Concrete Help
Utilities
4.75
(404 worldwide)
$1.99
IAP
Released Jun 2015
· updated Nov 2019
-
Pounds To Kilograms
Utilities
4.88
(384 worldwide)
$1.99
IAP
Released Aug 2015
· updated Nov 2019
-
Student Timetable
Education
3.97
(336 worldwide)
Free
IAP
Released Feb 2011
· updated Sep 2026
-
Gold Price Tracker
Finance
4.57
(269 worldwide)
Free
IAP
Released Feb 2016
· updated Aug 2025
-
Fraction Help
Utilities
4.38
(251 worldwide)
Free
IAP
Released Oct 2013
· updated Nov 2019
-
British Pounds To US Dollars
Utilities
4.75
(176 worldwide)
$1.99
Released Sep 2015
· updated Aug 2025
-
Japanese Yen To US Dollars
Utilities
4.87
(159 worldwide)
$0.99
IAP
Released Feb 2016
· updated Aug 2025
-
Ohmulator
Utilities
4.67
(149 worldwide)
$0.99
Released Oct 2010
· updated Dec 2019
-
Tipping++
Utilities
4.87
(130 worldwide)
Free
IAP
Released Dec 2013
· updated Dec 2019
-
Canadian Dollars To US Dollars
Utilities
4.86
(115 worldwide)
$1.99
Released Oct 2015
· updated Aug 2025
-
Euros To US Dollars
Utilities
4.83
(88 worldwide)
$1.99
Released Sep 2015
· updated Sep 2025
-
AX-CPU: Device Info
Utilities
3.59
(58 worldwide)
Free
IAP
Released Oct 2015
· updated Jun 2026
-
Deck Help
Utilities
4.25
(53 worldwide)
$2.99
IAP
Released Jul 2019
· updated Nov 2019
-
House Squarer
Utilities
4.09
(45 worldwide)
Free
IAP
Released Aug 2015
· updated Jul 2020
-
Body Mass Index Calculator BMI
Health & Fitness
4.71
(45 worldwide)
Free
IAP
Released Jul 2015
· updated Dec 2019
-
Flow Rate Help
Utilities
4.30
(44)
$0.99
IAP
Released Jul 2015
· updated Jun 2020
-
Fraction Help Calculator
Utilities
4.72
(25 worldwide)
$2.99
Released Jan 2011
· updated Feb 2024
-
Indian Rupees To US Dollars
Utilities
4.92
(24)
$1.99
Released Jan 2016
· updated Sep 2025
-
Character Writer
Productivity
3.27
(22 worldwide)
$0.99
IAP
Released Apr 2013
· updated Feb 2024
-
Special Character Keyboard
Utilities
2.91
(21 worldwide)
Free
IAP
Released Oct 2014
· updated Feb 2020
-
Philippine Pesos To US Dollars – Currency Converter (PHP to USD)
Utilities
4.64
(17 worldwide)
$0.99
Released Feb 2016
· updated Feb 2016
-
Simple To Do List - Notions
Productivity
3.88
(16 worldwide)
Free
IAP
Released Apr 2021
· updated May 2026
-
Fluid Ounces To Milliliters – Liquid Volume Converter (fl oz to ml)
Utilities
4.70
(10 worldwide)
$0.99
IAP
Released Sep 2015
· updated Sep 2015
-
Ounces To Grams – Weight Converter (oz to g)
Utilities
4.90
(10 worldwide)
$0.99
IAP
Released Aug 2015
· updated Sep 2015
-
Notions Task Manager
Productivity
4.10
(10 worldwide)
Free
SUB
Released Oct 2016
· updated Jun 2020
-
US Gallons To Liters – Liquid Volume Converter (gal to L)
Utilities
4.43
(7)
$0.99
IAP
Released Aug 2015
· updated Sep 2015
-
Chinese Yuan To US Dollars
Utilities
5.00
(6)
$0.99
Released Dec 2015
· updated Feb 2024
-
AI Home Remodel Design - Renvy
Graphics & Design
4.17
(6 worldwide)
Free
IAP
Released Jan 2026
· updated May 2026
-
Habit Hopper: Goal Tracker
Productivity
4.00
(5 worldwide)
Free
IAP
Released Nov 2019
· updated Aug 2025
-
Australian Dollar To US Dollar
Utilities
4.00
(4)
$0.99
Released Sep 2015
· updated Feb 2024
-
Widget Trivia
Games
5.00
(4 worldwide)
Free
IAP
Released Oct 2020
· updated Oct 2020
-
AI Home Remodel Design - Renvy
Graphics & Design
3.67
(3)
Free
IAP
Released Jan 2026
· updated May 2026
-
Timetable Pad Mini
Productivity
5.00
(2 worldwide)
Free
IAP
Released Dec 2011
· updated Oct 2017
-
Unit Converter: BarConvert
Utilities
5.00
(2 worldwide)
Free
IAP
Released Jun 2020
· updated Aug 2026
-
Podcast Player - Arvocast
News
3.00
(1)
Free
IAP
Released Jul 2020
· updated Sep 2026
-
Greeto
Photo & Video
5.00
(1)
Free
IAP
Released Dec 2014
· updated Jan 2018
-
Widget Caddy: Custom Widgets
Productivity
5.00
(1)
Free
IAP
Released Oct 2020
· updated Jun 2025
-
British Pounds To Euros
Utilities
$0.99
Released Sep 2015
· updated Sep 2023
-
Canadian Dollars To Euros
Utilities
$1.99
IAP
Released Oct 2015
· updated Feb 2024
-
Kilojoules To Kilocalories
Utilities
$1.99
IAP
Released Sep 2015
· updated Feb 2020
-
Australian Dollars To Euros
Utilities
$0.99
IAP
Released Sep 2015
· updated Feb 2024
-
Next Aussie Holiday
Reference
Free
IAP
Released Jun 2018
· updated Oct 2024
-
PodWise: Podcast Chapters
Utilities
Free
IAP?
Released Jun 2020
· updated Sep 2026
-
Trigonometry Help - Triangle Solver + Formulae
Utilities
$1.99
IAP
Released Oct 2011
· updated Sep 2014
-
Slithering Assassin
Games
Free
IAP
Released Jul 2015
· updated Dec 2019
-
Notions
Productivity
$4.99
IAP
Released Mar 2015
· updated Feb 2022
-
Slithering Assassin – Snake Versus Snake
Games
Free
IAP
Released Oct 2015
· updated Nov 2015
-
Slithering Assassin - Snake vs Snake
Games
Free
IAP
Released Jul 2015
· updated Aug 2015
-
BarTunes
Music
Free
IAP
Released Jun 2011
· updated May 2025
-
Notions Task Manager
Productivity
Free
SUB
Released Apr 2019
· updated Feb 2022