The only RPGs I have so far are rogue touch and the quest, but both are worth purchasing. I wish I had the other top ones like inotia or vay, but I can't.
So anyways, if it helps your decision here's a brief review of the quest, which btw is by chillingo whom I've been a customer of on the palm os and trust
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The biggest thing going for it I think is the decently big item list. Items from every type (jewelry, clothing, armor, weapons, plants, potions, scrolls, books, wands, ammo, special items, etc.) are in the game. Some items are enchantable (to varying degrees) and what I like is the alchemy items, which consists of plants and a mortar+pestle to make potions. It's nicely organized, better potions at higher levels, but you can always try. Each plant has three properties, you have to discover the second and third ones, the first is revealed right away.
The stats and skills system is elaborate too. There's roughly 20 different stats to choose between when choosing your main skills and applying skill points. There's also the typical 5 which are called something else though I can't remember what.
Strength, Endurance, Intelligence, etc.
Every magic skill you learn is in a book that you must read, and every book tells a story. Not only that, there are other informative books, story books that do nothing useful as far as I can tell, and books that increase stats. That's a lot of stories to make up lol.
The world is a 3D grid, and everything is turn based. I would have loved no grid and real-time, but this still works fine. Every time you move a minute passes, as there is daytime and nighttime. The sky is fascinating, there can be clouds and storms, but on a clear night the sky is beautiful.
The island you're on looks and feels a bit small, I would love a bigger one, more islands, a mainland, etc. but it's still ok.
You have one main quest, and there are a lot of smaller quests. The smaller quests don't have much depth, which I would have liked, and they don't contribute to your mysterious main quest except that you get money and items which always help. You have a quest log, but what I like is that it only gives you your goal and whether or not it's active, failed, or completed. Any future hints are not recorded.
Wow I went overboard on that. Oh well, hope it helps!
Nate