whichit - lessons from building a startup

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?

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@Jennifer

Which #dress should I buy for the party?

Boohoo Shop

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@Victoria

Which is the hot color of this season ?

Engage with your customer

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@Victoria

Which is the hot color of this season ?

5% 15%

20%60%

Identifying customers' preferences

Target audience

Gender

Age

Location

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@Victoria

Which is the hot color of this season ?

5% 60%

20%15%

BUY

Get Coupon

Purchase

Make them an offer they can't refuse

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System Architecture

server Azure MVC Web Api( .Net)

Web application

Landingpage

Androidapp

iOSapp

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So … what I’ve learned ?

• Build only what you must build!• Build smart & make your life easy.• How to add features without building a monster ?• Check yourself .• Tracking tasks .

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Build only what you must build

D.I.Y

D.D.I.Y (Picasso)

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Build things right and easy

• Put things where they belong :• Separate API calls from screens or views• Wrap data access with façade to enable persistent

data and cache .• Don’t duplicate code.• Android : use event’s to allow components

communication without coupling .

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Build things right and easy – server API example

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Add features with no effort

• Use public free API :• Instagram• Amazon • Google• Java– generate POJO easy with online tools:

• http://www.jsonschema2pojo.org/• http://jsongen.byingtondesign.com/

• Android : use intents !

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Add features with no effort

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Monitor

• Use analytics to find out how users use your product• Use crash reporting to find bugs quickly.

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Tasks

• Every version contain large amount of tasks • Different areas – web , server , clients , creative ,

sales .• Different stages – in progress , testing , wait for

release , postpone …

https://waffle.io/

https://trello.com

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IDE’s & links

• IDE’s :• Android studio -

https://developer.android.com/sdk/installing/studio.html

• (Web) brackets.io – http://brackets.io

• Links :• (Android) Open source list – http://android-

arsenal.com• Picasso - http://square.github.io/picasso/• Retrofit - http://square.github.io/retrofit/• Trello – http://trello.com

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Yarden JacobsonCTOyarden@getwhichit.com