Forum | Appery.io

Hello World,

I've been working on defining requirements and functionality of a multi-platform app and am now at the point where I'd like to estimate the cost of developing it.

I have defined screens with known fields & levels of complexity (eg. easy, average, difficult), underlying activities (& their complexity), and messages between platforms.

What I need now is a general 'rule-of-thumb' for estimating the development & unit-testing effort in man-hours. (I can multiply the resulting number by the developers' hourly rate to get cost )

Do the numbers differ between platforms ? (ie. is Android 'harder' than IOS, or BB, Windows Mobile, etc. ? )

Interesting question. Just to clarify, estimates using Tiggr or mobile app development in general?

Well, based on my experience, development effort is directly related to the tool(s) used, so, ... Tiggr-specific.

But, if you're also aware of effort estimates with other tools, I'm all ears ...

Thanks,
Steve.

Are you able to share the requirements with us?

Well, in terms of my original question, I don't understand what additional requirements you're looking for (please re-read).

I simply want to know how you estimate project effort: what rules-of-thumb do you use ?

Here is what we use.

Assumptions:
-Back-end/web services are REST and well documented
-Functionality is well documented
-UI is defined

Easy screens: 4-6 days/platform
Average: 7 -10 days/platform
Difficult: 12-15/platform

OK, thanks !

Would you be able to break those those numbers down (eg. by %-age) between UI, functionality, & web services ?

For example, would it be 25% / 50% / 25% respectively, or 20% / 60% / 20%, ... ?

I don't really know.. it depends on the app. If you would like, we can take this offline (email: max at exadel dot com). It might be easier and we can exchange more information.