Comparison

Bionic Circle vs twiist AID System

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bionic Circle

This app allows designated individuals to remotely monitor the diabetes management of an iLet user. It provides real-time access to crucial data like glucose levels, insulin status, and alerts, offering peace of mind for caregivers and family members.

Highlights
  • View CGM values
  • Monitor pump battery and insulin levels
  • See meal announcements
  • Track insulin doses
  • Receive critical alerts (low, high, no data)
  • Remote monitoring from anywhere
Read full description

Bionic Circle – Join the Bionic Circle and see your loved one's diabetes management - from anywhere! iLet users can invite up to 10 people to join their Circle. Loved ones can accept the invitation and download this Bionic Circle App to see: - CGM Values - Pump Battery and Insulin Cartridge Levels - Meal Announcements - Insulin Doses - Alerts - Urgent Low - Urgent Low Soon - Low - High - No Data Joining the Bionic Circle allows loved ones to monitor the iLet users from anywhere. With the secure wireless connection from the iLet App, the Bionic Circle allows you to follow glucose levels, meal announcements, insulin doses and trends throughout the day and night. If your loved one is at school, at a friend’s house, traveling or just at work or home, you’ll have confidence that the iLet is taking care of their diabetes management. If you have any questions about this app, please call our Customer Care team at 1-855-745-3800 option 1. WARNING: Dosing decisions should not be made based on this device. Users should follow instructions on the iLet Bionic Pancreas System.  Please note that any changes made to your iLet therapy settings should be done under the guidance and supervision of a qualified healthcare professional. Before making any adjustments, it is important to consult with your doctor to ensure that the changes are appropriate for your individual needs and health status. For iLet Bionic Pancreas safety information, visit www.betabionics.com/safety

About

twiist AID System

This smart system proactively adjusts basal insulin and personalizes care to help prevent highs and lows for individuals with type 1 diabetes. It offers an all-in-one dashboard for essential data, seamless integration with wearables, and advanced blockage detection for reliable insulin delivery.

Highlights
  • Automated insulin delivery
  • Personalized diabetes control
  • 6-hour glucose prediction
  • Apple Watch integration
  • Data sharing with family
  • Advanced blockage detection
Features
Read full description

Life with type 1 diabetes can be a stressful balancing act, but now it doesn’t have to be. Introducing twiist, the smart automated insulin delivery (AID) system that proactively adjusts your basal insulin and personalizes your care to help prevent highs and lows – day and night – for peace of mind. Consult a healthcare professional to confirm if this product is right for you or if you have questions about how to use this product to make treatment decisions. The twiist™ AID System is the first automated insulin delivery system powered by Tidepool. twiist Loop is based on Tidepool Loop, a technology that was originally designed by people with diabetes for people with diabetes! Experience this breakthrough in personalized diabetes management. In addition, the iiSure™ Technology in the twiist AID System uses sound waves to provide accurate delivery and reliability with advanced blockage detection technology. By checking the volume of each micro-dose of insulin at four key points, iiSure helps ensure accurate delivery. The twiist App is part of the twiist Automated Insulin Delivery System. The twiist AID System is for people with type 1 diabetes, 6 years of age and above, available with a prescription, only in the U.S. Visit twiist.com/safety for important safety information. Your All-in-One Diabetes Dashboard The twiist App home screen gives you a clear view of all your essential data in one place, including your insulin pump status, continuous glucose monitor (CGM) readings, 6-hour glucose prediction, and active insulin and carbohydrates. Get the full picture of your diabetes management at a glance, anytime, anywhere. User-Friendly Design for a Smooth Experience The twiist App includes an intuitive interface that's easy to navigate, with built-in tutorials to help you get started quickly. Personalized Diabetes Management Features twiist Loop continuously adapts to your needs, predicting your blood sugar 6 hours ahead and adjusting basal insulin every 5 minutes to help prevent highs and lows. With the widest glucose target range of any AID system (87-180 mg/dL), you get more flexibility in how you manage your diabetes. Meal and workout presets fine-tune insulin delivery, while the absorption rate selector lets you match insulin timing to the foods you eat. Changed your mind about a meal? Update your carb entry anytime, and twiist will automatically adjust to help keep you in range. Seamless Apple Watch Integration The twiist AID System takes wearable tech to the next level. How? With most Apple Watch models, you can discreetly check your numbers without pulling out your phone. Best yet, enter carbs and deliver insulin right from your wrist! Get personalized and precise management of your type 1 diabetes on the go without missing a beat in your daily routine. Seamless Apple Health Integration Review twiist AID System data alongside your health and fitness information to get a more complete picture. Share Data with Friends & Family The twiist AID System gives peace of mind to friends and family by sharing data with invited followers via the twiist insiight App.

Screenshots

Bionic Circle4 screens
twiist AID System4 screens

Verdict

The call

The clearest difference is rating: Bionic Circle at 4.8 against twiist AID System's 4.2. Bionic Circle also leads on review sentiment (77% vs 68%) and iOS requirement (16.0 vs 18.0). On price, ratings volume, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Bionic Circle holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 70 and 45 respectively. Written reviews point the same way: 77% of Bionic Circle's written reviews are positive against 68% of twiist AID System's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on August 5, 2026 and September 25, 2026 respectively.

Scorecard3 real differences · 7 level
Bionic Circle versus twiist AID System: the parameters behind the verdict, then further details
ParameterBionic Circletwiist AID System
PriceFreeFree
Rating4.8 (70 ratings) — better4.2 (45 ratings)
Positive reviews76.9% of reviews — better67.7% of reviews
Number of ratings70 — better45
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS16.0 — better18.0
Further details — not scored
Size36 MB82 MB
Age rating4+4+
DeveloperBeta Bionics Inc.Sequel Med Tech, LLC.

Customer experience

Bionic Circle

All ratings70 ratings
Positive95.7%
Neutral1.4%
Negative2.9%
Written reviews26 reviews
Positive76.9%
Neutral3.8%
Negative19.2%

twiist AID System

All ratings45 ratings
Positive77.8%
Neutral8.9%
Negative13.3%
Written reviews31 reviews
Positive67.7%
Neutral12.9%
Negative19.4%

In-app purchases

None

Bionic Circle

No in-app purchases

None

twiist AID System

No in-app purchases

Questions

Is Bionic Circle free?
Bionic Circle is free to download, with no in-app purchases.
Is twiist AID System free?
twiist AID System is free to download, with no in-app purchases.
Which has better reviews, Bionic Circle or twiist AID System?
Bionic Circle is rated higher. Bionic Circle averages 4.8 out of 5 from 70 ratings, while twiist AID System averages 4.2 from 45 ratings.
Do Bionic Circle or twiist AID System have ads?
Neither Bionic Circle nor twiist AID System shows ads.
Which is updated more often, Bionic Circle or twiist AID System?
Bionic Circle ships an update every 3 months, and twiist AID System every 3 months. Most recently, Bionic Circle was updated on August 5, 2026 and twiist AID System on September 25, 2026.

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