Transition from other closed-loop solutions¶

• Custom automation
• Detailed reporting
• Working remote bolus (for caregivers, not working at the moment in Trio)
• A built-in learning program

• Trio works on your iPhone and Apple Watch
• Trio has dynamic CR support

• If you have been successful with AndroidAPS but prefer the Apple ecosystem, you can easily transition to Trio.
• If you've struggled to get stable BG with AndroidAPS, you may have the same issues with Trio.

• A very clean, minimalistic user interface
• A built-in onboarding guide
• Simple settings
• A dedicated Loop Follow app for caregivers

• Unannounced meals
• Less user interaction/correction
• Dynamic ISF and CR
• Highly customizable temporary profiles
• Adaptive algorithm

• If Loop works well for you, you should not switch to Trio.
• Switching to Trio will not resolve Loop build issues. The build process is the same for both Loop and Trio.
• If you find it difficult to understand how Loop works, Trio is even more complex.

You should consider switching to Trio if you've been using Loop for a while and have issues that Loop can't solve even after tweaking and re-tweaking your settings and profile.

Trio has a feature called Unannounced Meals (UAM). With this option enabled and properly configured, Trio will react to rising BG by giving insulin through a Super Micro Bolus (SMB) even if no carbohydrates are registered. UAM helps in two scenarios: forgetting to add carbohydrates for a meal and entering carbohydrates but not the correct amount.

With UAM and SMB active and properly configured, Trio will make any necessary corrections. There is no need to add "fake carbs" to make Trio give insulin, as many Loop users are used to.

Many people with diabetes need more insulin as their BG rises. Because Loop uses constant, pre-set ISF and CR values; it cannot address the unexpected change in sensitivity. With dynamic ISF and dynamic CR enabled and properly configured, Trio will give enough insulin to lower those highs without user interaction. More aggressive settings might lead to a low. With less aggressive settings, it will take Trio some time to get BG back in range. The key is to find the effective balance between conservative and aggressive to meet your needs.

Properly configured, Trio will not give you insulin if you don't need it. A typical issue with Loop is that it stops delivering insulin when BG falls and then gives insulin from the "negative IOB" once BG starts rising again. For some users, this is too much insulin and leads to recurring lows. Properly configured, Trio will not overcompensate for the rapid BG rise after a low.

Exercise is good for everyone, including people with diabetes. People with insulin-dependent diabetes often struggle with lows during exercise and highs afterward. Trio has a built-in exercise mode that will reduce basal and ISF whenever you set a higher temporary BG target. Trio also has Profile Presets that can help you get the right amount of insulin during exercise. Profiles can also adjust CR, unlike temporary targets.

Illness, menstrual cycle, inactive days, active days, home office days, stressful events... In these situations, the overall insulin need differs from your usual need. Like Loop's Overrides, Trio has Profiles that can change basal rate, ISF, CR, and target BG within a pre-set timeframe. What Trio Profiles do that Loop Overrides do not do is provide the option to temporarily disable SMBs and apply adjustments to only basal, basal, and ISF, basal and CR, or all three.

1. Use the bolus calculator before you eat. Enter carbohydrates (and fat and protein if you want). Look at the recommended bolus and tap the info button if you disagree with it.
2. Change the recommendation if you want to, and then bolus. If the recommendation is way off, you should check your settings. Remember that the recommendation is based on your settings, including the "Recommended bolus percentage" setting.
3. Depending on your insulin type and sensitivity, you should consider doing this some minutes before eating. You do not need to adjust the carbohydrate timestamp to the actual time you plan to eat; you can keep it when you announce the meal and pre-bolus.
4. Enjoy your meal. In most cases, Trio will set a temporary low/zero basal.
5. If Trio detects BG is rising faster or more than expected, it will give more insulin (SMB) depending on the settings.
6. If Trio detects BG falling, a low/zero temporary basal will continue.
7. If you think Trio is not giving enough or too much insulin, you should look at your settings, including MAX IOB and all SMB-related settings.

No

• Some Trio users don't bolus for meals. They wait for Trio to detect rising BG and let Trio handle it. This usually leads to a temporary high BG, but Trio will get you back to target with the correct settings. If you're OK with a temporary high, then go ahead and try to skip bolus. You can start with small meals and tune your settings. You will need aggressive settings to let Trio give enough insulin.
• Some Trio users do a manual pre-bolus and skip entering carbs. Trio will predict a low BG until the meal kicks in and BG begins rising. If the pre-bolus is insufficient, Trio will give more insulin based on your settings. Yes, even without entering any carbohydrates. This approach will also result in a temporary high that is shorter than the completely unattended approach.

Most Trio users take a bit of all these approaches. They have an apple without entering anything into the app. Then, they pre-bolus for lunch because it is high in carbohydrates. Then, they use the calculator for dinner. This is all OK, and it comes down to the variation you accept for your BG.