I've only played the PC version of VVVVVV, so I can't say anything about the touch controls, but I can describe how the game is and what it makes well worth your time, money, skill...and patience
VVVVVV drops you into a weird alien station, one of few survivors of a crash landing that leaves your fellow crew members scattered across the world. In that aspect, VVVVVV already separates itself from most precision platformers: it's non-linear. Actually it's almost in the vein of a Metroidvania, you travel to different areas, find teleporters that let you jump around the map or back to a central hub. Each area offers its own unique challenge, a twist of the core mechanics
At its core, besides the truly challenging gameplay, that diversity is what makes VVVVVV so much fun. Mechanically, the game is so simple: move left, move right, and jump. Well not actually a jump, but rather a reversal of gravity that lets you navigate from floor to ceiling and vice versa. You can't switch gravity mid-jump (although you can control your movement) so each switch must be deliberate.
Yet from such simple controls, VVVVVV crafts such a wide range of challenges, hazards to avoid, and interesting scenarios. From the ubiquitous spikes to moving enemies, from barriers that switch your gravity orientation in mid-air, to utilizing screen wrap, VVVVVV takes its precision platfomer roots and not only delivers on that front, but also creates head-scratching puzzles and challenges to overcome
If you know Terry Cavanagh, you know what kind of experience to expect from VVVVVV. Brutally challenging, stylish with a chunky retro aesthetic, a fantastic soundtrack, and a polished game that will surely make you want to throw your device across the room.
If that kind of experience appeals to you, then VVVVVV is a must buy. You won't be disappointed