Penta

Penta is a CD player app for iPhone and iPad that turns your Apple Music library into a five-disc CD changer. Rather than presenting your albums as a list, it recreates a '90s five-disc carousel: you pick an album, open its jewel case and drop the disc into the carousel, then play music the old-fashioned way with authentic sights and sounds. It is built for people who want the ritual of physical media back on a device they already carry, and it is free on iPhone and iPad. Penta 1.3 extends the idea to iPhone Duo, where the phone itself becomes the jewel case. Streaming libraries made music instant and invisible. Everything you own sits behind a search field, and the small ceremonies that used to surround listening — pulling a case off a shelf, reading the liner notes, hearing a tray motor slide out — disappeared along with the hardware. Penta's answer is to rebuild those ceremonies in software. Its starting point is the five-disc CD changer, a piece of '90s hardware that held a fixed set of albums and asked you to swap discs as you went. The app keeps that constraint and the physicality around it, so browsing a library becomes a sequence of small physical actions again instead of an endless scroll. The core of Penta is the carousel. Five discs sit on it beside a glowing display, and loading one follows the same order every time: pick an album, open the jewel case, drop the disc into the carousel. Music plays the old-fashioned way, from the carousel rather than a queue. Every disc carries real album art, so the changer looks like a rack of CDs rather than a grid of thumbnails, and an optional one-time Pro unlock adds the real printed CD art. Because only five slots exist, choosing what goes in becomes part of using the app — the same small decision a physical changer forced on its owner. Penta's sound design is the detail that sells the illusion. Every click, whir and tray motor in the app was recorded from a real CD changer, so the noises that accompany a tray opening or a disc being loaded are sampled from physical hardware rather than synthesized. Paired with the authentic sights of the changer, those sounds make loading an album feel like operating a machine. The glowing display and its level meters are decorative: Apple Music audio is protected, so no app can read the live signal, and Penta states that the meter animation is decorative by design. iPhone Duo support, arriving with Penta 1.3 as a free update, is where the concept gets unusual. On iPhone Duo the phone itself is the jewel case. Closed, you are holding the album; opening the Duo opens the case with it, because the hinge is the case's hinge — liner notes on one side, the disc on the other. Opened flat, the whole deck is visible: five discs on the carousel and a glowing display. Folded like a laptop, the layout becomes a CD wallet above the deck, so you can flip through your collection above the tray. Held upright, the app shows a CD wallet over the tray that animates open and closed. On iPhone today you also get keys you can feel, and on iPad the app works any way up. Underneath the hardware impression, Penta works with the music you already have in Apple Music. It reads your library to show and play albums and never adds, removes or edits anything. Albums you own play without a subscription; streaming from the Apple Music catalog requires an Apple Music subscription. The app needs permission to access your music library — if access was declined, it can be turned back on in Settings › Penta › Media & Apple Music — and catalog albums will not play without a subscription either. Penta runs on an iPhone or iPad with iOS or iPadOS 17 or later. The benefit is atmosphere: the same library, heard through a deliberately limited, tactile interface. Because the carousel holds five discs, listening becomes a short set of deliberate choices rather than an infinite queue, and because every interaction carries recorded mechanical sound and real album art, the app restores some of the weight that digital music lost. It also respects what you already have — the app is free, an optional one-time Pro unlock adds the real printed CD art, and nothing in your library is modified by using it. In practice, Penta suits a few clear situations. It is for the listener who wants to load a handful of albums and let the changer run. It is for anyone who used a '90s changer and wants the pick, open and drop sequence back, complete with recorded clicks and whirs. It is for iPhone Duo owners who want to close the phone and be holding an album, open it and watch the case open along the hinge, or fold it like a laptop and flip through a CD wallet above the deck. And it is for iPad users who want the carousel and glowing display visible on a stand, any way up, while albums play from their library. Penta is aimed at iPhone and iPad users with an Apple Music library who want to play albums the old-fashioned way, and at iPhone Duo owners curious about what a foldable screen adds to a music app. It is available on the App Store and free on iPhone and iPad, with an optional one-time Pro unlock for the real printed CD art. iPhone Duo support arrives with Penta 1.3 as a free update for everyone who has the app. Support is handled by email at jaseubert@gmail.com, and the developer says every message is read. Penta's value is simple: it makes a digital library behave like a five-disc CD changer, with the case, the carousel, the glowing display and the recorded sounds of real hardware. For anyone who misses the physical ritual of playing an album, that is the whole point.