In reply to Jones_88:
The Schweiz Plaisir guides are good and I would recommend the guide over the app on the basis that I find the guide easier for comparing crags, access etc. They also publish an Interlaken Sport guide which covers the Grindelwald area. Downside is they are ludicrously expensive, but this is Switzerland...
Having done a similar trip to the Lauterbrunnen Valley a few years ago, Hintisberg is the crag I'd go back to first mainly because of its location - great views. Near Grindelwald but 20-30 mins up a farmers track. There is also a good crag in Grindelwald (Gletschershulcht) but this is really a sport crag with a few multipitch routes. Lobhorn looks a fun day out (on the Murren side) but it is a long approach, might require a hut stay.
If you have a car the routes in the passes are very special, I'd prioritise them over the rock routes around Grindelwald - Grimsel, Susten and Furka passes. We also had a good day out on Mittagsfluh near Boltigen, 5C called Sandmeierrippe. Multipitch sport but runout and pisstake bolting - bolts typically after the unprotected crux. If you climb harder there is a supposedly better route next to it, can't recall the name, ~6a. We thought the Swiss grades were stiffer than French equivalents in Chamonix.
If you want a rest day Bern is worth a visit. We enjoyed swimming in the River Aare at the Marzilibad where they have redirected the river to flow through the park. I think it is free (or close to). Walk up the river as far as you want, put your stuff in a dry bag, jump in and the fast current will take you back to the Marzilibad. You're basically swimming in mineral water.