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Comment by rimantas | Hacker News Reader

  > HTML5 allows you to cache apps and data locally

In theory, yes. In practice: after all that shamanic dance trying to get all this to work you will wonder, what's the point.

Native is just much much simpler to develop and more performant to run. Yes, you loose the cross-platorm appeal, but which will appeal more to your potential user: an app crafted to run on a few platforms (and therefore alien on all of them), or an app crafted with a specific platform in mind? Not many predict that desktop apps will be replaced by web apps soon, but for some reason this a popular view regarding mobile. But it is backwards: on desktop you have much more room to manoeuvre.

I think it is more likely we will see the web going a bit back to its roots with a more pronounced cloud-web gaining prominence, basically backend servers talking to apps (and browsers) API calls and JSON exchange.

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> after all that shamanic dance trying to get all this to work you will wonder, what's the point.

Shamantic dance? It's trivial to the point of being a non-factor. You wrap your app in Phonegap, and make json requests to the web if you need data from there. Otherwise, it is stored and runs on the client.

> Not many predict that desktop apps will be replaced by web apps soon, but for some reason this a popular view regarding mobile.

For most things, desktop apps were replaced by web apps. Which is why Facebook doesn't maintain a desktop app (or Hacker News for that matter). HTML5 proponents have never made the claim that it will replace all native apps. Instead, it will replace data/list style apps like Facebook or productivity apps, which frankly, make up the vast majority of apps in the app store.

  > You wrap your app in Phonegap, and make json requests to
  > the web if you need data from there.

You know what? I think you should try to do all those things you deem so easy, and then we can talk. Or you can google for phonegap success stories.

  > For most things, desktop apps were replaced by web apps

Can you name a few? I was impressed with GMail in 2004, in 2012 I am using Sparrow to read and write my email.

  > Instead, it will replace data/list style apps

In Cocoa Touch I have highly optimised UITableView for that. In HTML I have what, UL, OL and LI? And If I need to handle selection, edition, caching, cells with different layouts: HTML5 is still superior? Should I send markup over the web too? Or should I go mad trying to make offline cache work properly? If I am doing native I have CoreData. If I am going web route what do I have, IndexedDB? Or do I?

>And If I need to handle selection, edition, caching, cells with different layouts

I'm not going to touch the rest of your comments but mutability of presentation is really not the place to wage your battle against HTML/CSS/JS from. Dynamic presentation is really web tech's strong point.

Building a well-made hybrid app requires a lot more work than developing an equally performant pure native app, I agree (assuming your standards for 'well-made' are sufficiently high; a vanilla PhoneGap app doesn't quite cut it).

There's a trade-off, though: a hybrid app is a lot more work, but in return you generally get much shorter dev times when creating new content. It's not always the right design decision to make, but there are use cases where it's worth the investment.

Have you actually done it? It's not that hard at all compared to a native app...

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