For the Vatican Museums, yes, for most first time visitors who are not joining a guided tour. The official audio guide is made by the museums for the route through their galleries, and it turns room after room of masterpieces into something you can follow. But it covers the museums only. St. Peter's Basilica, St. Peter's Square and the streets around the walls are a separate visit, and there you need something else. Here is what each option does well, and who it suits.
First, the Vatican is two visits
Most of the confusion starts here. The Vatican Museums, with the Sistine Chapel along the route, are one visit, with their own entrance, tickets and lines. St. Peter's Basilica, which you enter from St. Peter's Square after a security check, is another. Plenty of people do both in one day, but they plan them as two separate visits.
Book the museums on the official Vatican Museums site, and check it for current hours, prices and closing days, which include a number of religious holidays. Both the museums and the basilica expect modest dress, so cover your shoulders and knees.
What the official audio guide does well
The Vatican Museums audio guide is the museums' own. It is a small audio player that you reserve on the official ticket site or pick up at the entrance, with hundreds of short commentaries along the visit route and a choice of many languages. Check the official site for the current price and language list.
Its strength is depth where you need it most. The museums hold one of the great collections on earth, and without help the galleries soon blur together. With the guide you can stop for the Laocoön and the Apollo Belvedere, slow down in the Raphael Rooms and the Gallery of Maps, and walk past whatever does not grab you. You set the pace, which a group tour cannot offer.
Its limits are just as clear. It is made for the inside of the museums, not for the basilica or the square. It is one player per person, so a family needs several. And in the busiest rooms you will often move with the crowd rather than stop for every commentary.
The Sistine Chapel needs a plan
The Sistine Chapel comes late in the visit, and it is not a place for long explanations. Staff ask for quiet, and photos are not allowed inside. So hear its story before you walk in, then spend your time looking up. Michelangelo painted the ceiling between 1508 and 1512, and came back more than twenty years later to paint the Last Judgment on the altar wall. This is also the room where the cardinals meet in conclave to elect a new pope.
What the official guide leaves out
St. Peter's Basilica is the other half of the day, and the museums' guide is not made for it. Inside, look for Michelangelo's Pietà behind glass in the first chapel on the right, Bernini's bronze canopy over the papal altar, and the dome above it, designed by Michelangelo and finished after his death. Beneath the altar lies what is venerated as the tomb of Saint Peter, above a Roman necropolis that can only be seen on small guided visits booked through the Vatican's Excavations Office.
Out in St. Peter's Square, find one of the two round stone markers set into the paving between the obelisk and the fountains. Stand on it and the four rows of Bernini's colonnade line up into a single row of columns. The obelisk is far older than the church. It once stood in the Circus of Nero, which lay right beside the site of today's basilica.
Where TourTour fits
TourTour covers the part the official guide leaves out, as part of a whole Rome tour. The Rome tour narrates 100 stops in 13 languages and works offline once downloaded, and as you reach a stop its story starts on its own. Vatican City, St. Peter's Square, St. Peter's Basilica, the Pietà, Saint Peter's tomb, the Vatican Necropolis and the Apostolic Palace are all stops, and so is the Circus of Nero. The Vatican City story opens with "You are standing in a place that has seen massive shifts in power and belief." The basilica story opens with "You are standing before one of the largest churches in the world."
There is a route for it too. Inside the Walls of Vatican City is an 8 stop walk through the smallest sovereign state on earth, from the underground necropolis to the Sistine ceiling. The tour also has stops for the Vatican Museums, the Sistine Chapel, the Borgia Apartments and famous works such as the Apollo Belvedere and the Augustus of Prima Porta. Those are short stories rather than a gallery by gallery guide. You can play any stop from the map, so hear them before you go in or while you wait, and let the official guide take over inside. Afterwards, walk on to Castel Sant'Angelo and the next story is waiting there. You can see every stop on the Rome audio tour page.

Who each option suits
The official audio guide. Pick it if the museums are the point of your day and you want to understand the art at your own pace. It is made for exactly that.
TourTour. Pick it if you want the square, the basilica and the stories around the walls in your own language, with the rest of Rome in the same app and no signal needed. A city is one purchase that is yours to keep, and through Apple Family Sharing up to six people in your family can use it on their own phones.
A human guide. Pick one if you want live answers, or a group that handles the logistics for you. It costs more, but for art lovers full of questions it can be worth it. Here is our honest look at self guided tours versus guided tours.
Or use both. Plenty of visitors do exactly that, with the official guide inside the museums and TourTour for the square, the basilica and the walk to Castel Sant'Angelo. TourTour is on the App Store.
Frequently asked questions
Does the Vatican Museums audio guide cover St. Peter's Basilica?
It is made for the route through the Vatican Museums, which includes the Sistine Chapel. St. Peter's Basilica is a separate visit with its own entrance, so plan another way to hear its story.
Can I use TourTour inside the Vatican Museums?
Yes. You can play any stop from the map, including the Vatican Museums, the Sistine Chapel and the Apollo Belvedere. They are short stories rather than a gallery by gallery guide, so the official audio guide goes deeper inside the museums.
Is the Vatican audio guide available in my language?
The official audio guide comes in many languages, so check the official Vatican Museums site for the current list. TourTour narrates every stop in 13 languages, including English, Spanish, French, German, Italian, Portuguese, Japanese, Korean and Chinese.