What's New

This app has been updated by Apple to use the latest Apple signing certificate.

Caliper bug removed, graphic dimensions improved !

App Description

Did you also sometimes wonder how many kinds
of different screws are around in the world?

Everything is fixed with screws and if you
need a replacement screw, you don't even
know what's the name of this screw?

To avoid any misunderstanding in a spare
part store or in a DIY market iscrew
let you identify your screws quickly !

Just compare the pictures with your original
screw.

iscrew informs you about the deep unknown
screw space in a very easy way.

No you can impress your friend by asking
something like:"...Do you have a
Slotted 6 Lobe Combo screw for me..."

Or just learn something about
screws you never learned before

Content and features of the app screw:

* screw heads
* screw types
* mechanical class
* moments
* threads (all worldwide known)*
* thread charts
* caliper real time simulation (measure exactly in cm & inch) all kind of diameters
* Note system (for your important notes about screws)
* torch, lamp


iscrew has dual language support included: English / German
This app does not include any annoying advertisement !!
That's why it is not for free !

*illustrated detailed threads description included:

Acme Thread
Bicycle-Screw-Thread-DIN-79012
Bodmer-Thread
British-Association-BS-93
Buttress-Coarse-Thread-DIN-513
Buttress-Fine-Thread-DIN-514
C.E.I.-Thread
E-Thread-DIN-40400-Edison-Thread
French-Thread,S.F.=-System-Francais
Glass-Thread-DIN-40450
ISO-Metric-Coarse-Thread-DIN-13
ISO-Metric-Fine-Thread-DIN-13
Knuckle-Thread-DIN-405
Knuckle-Thread-DIN-20400
Loewenherz-Thread
NPT-American-Taper-Pipe-Thread-ANSI-B-1.20.1
NPTF-American-Taper-Pipe-Thread-ANSI-B-1.20.3
Pg-Thread-DIN-40430-Steel-Conduit-Thread
Sewing-Machine-Thread
Sharp-'V'-Thread-Used-in-the-U.S.A.-until-1909
Square Thread
Trapezoidal-Coarse-Thread-DIN-103
Trapezoidal-Fine-Thread-DIN-103
UNC-Thread-ANSI-B1.1
UNEF-Thread-ANSI-B1.1
UNF-Thread-ANSI-B1.1
Unified-Thread-Series-8-TPI-ANSI-B1.1
Unified-Thread-Series-12-TPI-ANSI-B1.1
Unified-Thread-Series-16-TPI-ANSI-B1.1
Valves-for-Vehicle-Tyres-DIN-7756
VDI-Thread
Whitworth-Coarse-Thread-BS-84-BSW-(British-Standard-Whitworth)
Whitworth-Fine-Thread-(old)-DIN-239
Whitworth-Fine-Thread-(old)-DIN-240
Whitworth-Pipe-Thread-DIN-ISO-228-BSP
Whitworth-Tapered-Pipe-Thread
ISO-Metric-Coarse-Thread-DIN-13

iPhone Screenshots

(click to enlarge)

iscrew screenshot 1 iscrew screenshot 2 iscrew screenshot 3 iscrew screenshot 4 iscrew screenshot 5

App Changes

  • August 20, 2011 New version 2.4
  • December 21, 2011 New version 3.0
  • January 05, 2012 New version 3.4
  • November 10, 2012 New version 3.6
  • December 20, 2012 Price decrease: $1.99 -> $0.99
  • March 28, 2014 New version 3.8
  • March 02, 2016 Price increase: $0.99 -> $1.99
  • July 15, 2016 Price decrease: $1.99 -> $0.99
  • June 14, 2019 New version 4.0