One is that Dexcom’s approval process itself is known to be glacial, as demonstrated by the SugarMate fiasco. This is also new tech for Dexcom; either they are integrating their existing G6 code into another company’s app or, more likely, Insulet engineers are having to deal with stuff they’ve never seen before and aren’t permitted to speak about.
Another is that Dexcom’s software does have bluetooth dropout issues, possibly a result of supporting many different phones and OS revisions, and likewise Insulet’s Omnipod Display app, at least on the iPhone XR, goes dead for days unless it is revived periodically (from personal experience.)
Unlike the locked-down Dash PDM both apps can be backgrounded by the user and, even, hard stopped. If I were the FDA I might not care that a BG meter did that but I would need convincing about a drug delivery system. Is that why the app is not required? The algo seems to be set up to run entirely on the pod. I wonder if Insulet patented that; a missed opportunity if they didn’t. From Insulet’s marketing page (emphasis added):
To simplify things even more, you can control the whole Omnipod 5 System from a compatible smartphone through the Omnipod 5 App. With the Pod and CGM continuously talking, they’ll do most of the work automatically, but, when you need to, you can control your insulin delivery, give yourself a mealtime dose, and easily share data
Believe me that text in bold is much more important to me that having yet another broken app.
They also claim to have an activity detector. From their wording it sounds like it is on the phone/controller, but it could even be on the pod - accelerometers are dirt cheap. I wouldn’t trust it though; my iPhone goes into “car” mode when I’m skiing, my BG spikes up when I drive and down when I ski…
The fact that the controller now obviates the need for the G6 app is certainly a big plus. Now if they could just unlock it a bit. The Dash controller takes a SIM card and an SD Card, it has a camera and a flashlight, but none of these things work. It’s kind of useful to be able to make an emergency call, store pictures (128GByte SD card: $14, or $18 if you want one that works for more than a year), take a photo of the damage to your car, find the darned light switch in the middle of the night…
Give us access to cellular data on GSM (so it works outside the US) and the controller can send out emergency texts with location information (from the built in but inaccessible GPS) actually manage the time correctly (I just leave mine on winter time all year) and even provide crude email and messaging to the user. Obviously it can’t do Pegasus enabled data coms, but simple true text messaging using Telegram or Signal shouldn’t be a safety issue and simple text email shouldn’t either; I’m certainly not suggesting putting WebKit in there, that would definitely be a safety issue (it’s too big.)