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Glucose Guardian

Care, shared.

One calm place for every reading, meal, and dose — and everyone who helps.One calm place for every reading, meal, and dose — yours, and anyone you choose to share with.

Who’s it for?
Good morning
Mia’s GuardianJoe
● DexcomJust now
≡ Logs
mg/dL
In Range
→
Stable
Updated just now
3H
6H
12H
24H
1:00 AM4:00 AMNow
Glucose
Insulin
Food
Chat
Dashboard
Scroll to walk through the app
Good morning
Mia’s GuardianJoe
● DexcomJust now
≡ Logs
mg/dL
In Range
→
Stable
Updated just now
3H
6H
12H
24H
1:00 AM4:00 AMNow
Glucose
Insulin
Food
Chat
Dashboard
Good morning
Mia’s GuardianJoe
● DexcomJust now
≡ Logs
mg/dL
In Range
→
Stable
Updated just now
3H
6H
12H
24H
1:00 AM4:00 AMNow
Glucose
Insulin
Food
Chat
Dashboard
Recent Readings×
128 mg/dLIn Range7:42 AM
126 mg/dLIn Range7:37 AM
124 mg/dLIn Range7:32 AM
121 mg/dLIn Range7:27 AM
118 mg/dLIn Range7:22 AM
116 mg/dLIn Range7:17 AM
115 mg/dLIn Range7:12 AM
117 mg/dLIn Range7:07 AM
×
Tips for You 💡
PATTERN
⏱️
Big jumps after meals!

Your sugar rose about 60 mg/dL after breakfast. Giving insulin 10–15 min before your meal can help a lot!

Ask AI about this›
PATTERN
☀️
Afternoon sugar runs high!

Your sugar tends to be around 185 mg/dL in the afternoon. Try a lighter lunch or giving insulin a little sooner before eating!

Ask AI about this›
REVIEW
🧑‍⚕️
Talk to your care team

You were in your safe zone 78% of the time today. Your doctor might want to look at your settings!

Ask AI about this›
Dose
Log
128 mg/dL
→
In Range
CalculatorInsulin: Lispro ⌄
CARBS
0 g3 g38 g
typed in
CURRENT BG LIVE
128 mg/dL
HOW YOUR DOSE IS CALCULATED
Correct BG
0.16 u
128 mg/dL
+
Carb Dose
2.53 u
38 g
+
Active Carbs
0 u
0 g
−
Active Insulin
0 u
0 u
SUGGESTED DOSE
0 units2.5 units
Tap to edit
↗ Predict✓ I Just Took This Dose
SUGGESTED DOSE
2.5 units
Tap to edit
↗ Predict Again✓ I Just Took This Dose
PROJECTED GLUCOSE IF DOSED NOW
Prediction strength: Strong match · 3 past matches
In 2 hours: about 152 mg/dL
The more you use the app, the more accurate your predictions will be
Glucose
Insulin
Food
Chat
Dashboard
Dose
Log
128 mg/dL
→
In Range
CalculatorInsulin: Lispro ⌄
CARBS
0 g
add food to dose
CURRENT BG LIVE
128 mg/dL
38 g carbs still active3H
2.5 u insulin still active4H
HOW YOUR DOSE IS CALCULATED
Correct BG
0.16 u
128 mg/dL
+
Carb Dose
0 u
0 g
+
Active Carbs
2.53 u
38 g
−
Active Insulin
2.5 u
2.5 u
SUGGESTED DOSE
0 units
Tap to edit
↗ Predict✓ I Just Took This Dose
This app provides estimates only and does not replace medical advice. Always follow your doctor’s instructions.
Glucose
Insulin
Food
Chat
Dashboard
Dose
Log
128 mg/dL
→
In Range
‹TodayYesterdayMon, Oct 12›
7:12 AMInsulin2.5u · Lispro · Rapid‑Acting · by MomJoe›
7:05 AMWaffles with berries38 g carbs · from photo · by MomJoe›
12:10 AMInsulin0.5u · Lispro · Rapid‑Acting · by DadJoe›
6:32 PMInsulin4u · Lispro · Rapid‑Acting · by DadJoe›
6:30 PMChicken & rice58 g carbs · from photo · by DadJoe›
11:58 AMInsulin2u · Lispro · Rapid‑Acting · by School nurseJoe›
11:55 AMTurkey sandwich32 g carbs · by School nurseJoe›
3:40 PMApple slices15 g carbs · by GrandmaJoe›
12:01 PMInsulin2u · Lispro · Rapid‑Acting · by School nurseJoe›
11:58 AMPizza slice35 g carbs · by School nurseJoe›
Glucose
Insulin
Food
Chat
Dashboard
Glucose trend: → Stable
128 mg/dL
→
In Range
AI Photo AnalysisSave to Quick Lookup×
Waffles With BerriesEstimated 2 toaster waffles with mixed berries● high confidence
38g carbstap to edit
6g fat · 5g protein
Calculate InsulinLog This Meal
Glucose
Insulin
Food
Chat
Dashboard
FoodBarcode
Cancel
Glucose trend: → Stable
128 mg/dL
→
In Range
AI Photo AnalysisSave to Quick Lookup×
Waffles With BerriesEstimated 2 toaster waffles with mixed berries● high confidence
38g carbstap to edit
6g fat · 5g protein
Calculate InsulinLog This Meal
Glucose
Insulin
Food
Chat
Dashboard
×

Insulin Calculator

For waffles with berries — carbs pre-filled from the analysis.
CARBS (G)
38
CURRENT BG LIVE
128
Mealtime insulinLispro · Rapid‑Acting
Carb Dose38g ÷ 15g
2.53 u
Correction(128 − 120) ÷ 50
+0.16 u
Trend Adj.Stable →
0 u
Uncovered CarbsNone still absorbing
0 u
Active InsulinNo recent doses
0 u
Suggested dose:Adding it up…Raw 2.69u → rounded to nearest ½
02.532.692.5 units
Tap to edit
✓ I Took This Insulin
Glucose GuardianManaging Mia’s careYour diabetes companion
190 mg/dL
↘
Above Range
Messages
Hey! Need help with anything?Hey Joe! Need help with anything?4:12 PM
Mia’s at 190 after lunch. Is that normal?I’m at 190 after lunch. Is that normal?4:12 PM
A rise after a carb‑heavy lunch is common. HerYour trend is already heading down — recheck in about an hour.4:12 PM
What should I pack for soccer practice?What should I bring on my run tonight?4:13 PM
Fast‑acting carbs like juice or glucose tabs, a small snack, and water. Check her number before she starts.Check your number before you head out.4:13 PM
Mia’s glucose is very highMy glucose is very highShould I give a correction dose now?Should I correct now?
Ask Glucose Guardian anything…
Glucose
Insulin
Food
Chat
Dashboard
DashboardHelpMJ8 yrs old34 yrs oldType 1
Glucose & Dosing
Insulin Settings›
Activity Log›
A1C›
Alerts & Notifications
Notifications›
Alert Thresholds›
Emergency Contacts›
Care Team
Care Circle›
Doctor Office›
Doctor Code›
Glucose
Insulin
Food
Chat
Dashboard
Activity Log38 meals · 74 insulin doses41 meals · 79 insulin doses
×
WEDNESDAY, OCT 14
Waffles with berries7:05 AM · 38g carbs · 2.5u · AI Photo
2.5u Bolus Insulin7:06 AM
0.5u Bolus Insulin12:10 AM
TUESDAY, OCT 13
Chicken & rice6:30 PM · 58g carbs · 3.9u · AI Photo
4u Bolus Insulin6:32 PM
Turkey sandwich11:55 AM · 32g carbs · 2.1u
2u Bolus Insulin11:58 AM
Clear MealsClear Insulin
A1C×
1D3D7D14D30D90D
ESTIMATED A1C · 7-DAY AVG
6.9%
78%Time in Range
20%% High
2%% Low
142gAvg Carbs/day
Most highs come after meals. Giving meal insulin a little earlier could lower your estimate.
151mg/dLAvg Glucose
78%80-180 mg/dLTime in Range
DashboardHelpMJ8 yrs old34 yrs oldType 1
Glucose & Dosing
Insulin Settings›
Activity Log›
A1C›
Alerts & Notifications
Notifications›
Alert Thresholds›
Emergency Contacts›
Care Team
Care Circle›
Doctor Office›
Doctor Code›
Glucose
Insulin
Food
Chat
Dashboard
Insulin Settings×
Shared with your care circle — only the guardiansyou can edit insulin settings.
Carb Ratiograms of carbs per unit of insulin
1:15 g/unit
Target Glucosedesired blood glucose level
120 mg/dL
Correction Factor (ISF)points glucose drops per unit
1:50
Time‑of‑Day OverridesNone set — the base values apply all day. Tap Edit to set different ratios for breakfast, lunch, dinner, or night.
Insulin Used
RAPID‑ACTING
Humalog100 u/mLLispro100 u/mLNovoLog100 u/mLApidra100 u/mLFIASP100 u/mL
LONG‑ACTING
Lantus100 u/mLBasaglar100 u/mLLevemir100 u/mL
ULTRA‑LONG
Toujeo300 u/mLTresiba100 u/mL
SHORT‑ACTING
Humulin R100 u/mLNovolin R100 u/mL
INTERMEDIATE
Humulin N100 u/mLNovolin N100 u/mL
PRE‑MIXED
Humalog Mix 75/25100 u/mLNovoLog Mix 70/30100 u/mL
Care Circle
+ Invite co‑guardian
Caregiver codes
For relatives, babysitters, teachers, nurses — no account needed. Codes work until retired, only inside their schedule.
School nurseMomActive now
N8RS4T2W
M T W T F · 7:30 AM–3:00 PMAlways on
View glucose readings
View food & insulin logs
Add logs
Use the dose calculator
GrandmaAlex · best friendActive now
K7M2QP9X
Always onAlways on
GrandpaPriya · coworkerActive now
B4TS9W2L
Weekends · always onM T W T F · 9:00 AM–5:00 PM
BabysitterRoommateActive now
C0A7CH5Q
Fri · 6:00 PM–11:00 PMEvery night · 10:00 PM–7:00 AM
Glucose
Insulin
Food
Chat
Dashboard
Wednesday, October 14
2:10
Urgent low · Mianow
58 mg/dL and falling. Treat now.
Critical alert — sounds even on silent
DadMom was alertednow
No response in the wait window — your backup has been paged.
01 / 12
6:30 AM · Waking up

Your day, at a glance.

Live from Dexcom, Mia’syour reading updates on its own — color‑coded, with the trend. Tap the graph to switch between dots and a line — tap again to switch back.

02 / 12
6:31 AM · Coffee in hand

Tap the circle. Tap the arrow.

The circle opens Recent Readings — every value from while Miayou slept. The trend arrow opens Tips for You: patterns from heryour own numbers, each with Ask AI about this.

03 / 12
6:40 AM · Before breakfast

See it before you dose.

Type the carbs in at the top and tap Predict. Glucose Guardian draws where Miayou’ll likely land over the next two hours — before you give a single unit.

04 / 12
6:42 AM · Catching up

Every day, logged.

Flip back through the days: what was eaten, what was given, and who gave it — Mom, Dad, Grandma, or the school nurse.Flip back through the days: what you ate, what you took, and when — every entry, in one place.

05 / 12
7:05 AM · Kitchen

Snap breakfast.

Point the camera at the plate. The AI estimates the carbs — 38 g for the waffles — with fat, protein, and a confidence check.

06 / 12
7:06 AM · Kitchen

Watch the math.

Calculate Insulin fills in the carbs and the live reading, then adds each part — carb dose, correction, trend — and rounds to the nearest ½ unit.

07 / 12
7:35 AM · After breakfast

Know what’s still working.

Back on the Insulin tab, breakfast is already counted: 38 g of carbs and 2.5 u still active, with their 3‑ and 4‑hour windows — so the next dose won’t stack on top of this one.

Glucose Guardian provides estimates only and does not replace medical advice. Always follow your doctor’s instructions.
08 / 12
4:12 PM · After schoolAfter work

Ask anything.

The built‑in assistant knows Mia’s numbers and answers in plain language — what to pack, what a high means, what to check next.The built‑in assistant knows your numbers and answers in plain language — what a high means, what to bring on a run, what to check next.

09 / 12
4:20 PM · Checking in

Look back. See the trend.

The Dashboard keeps everything in one place. Activity Log shows every meal and dose and when it was logged. A1C estimates Mia’syour A1C over 1 to 90 days — and it gets more accurate the more you use it, because it’s based on what’s been logged and heryour current trends.

10 / 12
4:25 PM · Settings

Your doctor’s plan, built in.

Insulin Settings holds the carb ratio, target, and correction factor from your care team, plus every insulin you use — from Lispro to Lantus. Every estimate starts here.

Glucose Guardian provides estimates only and does not replace medical advice. Always follow your doctor’s instructions.
11 / 12
4:30 PM · Planning tomorrow

Bring in your people.

Mom is Mia’s guardian, and Dad joins as co‑guardian — each with their own account. Everyone else — the school nurse, Grandma, Grandpa, the babysitter — signs in with a code you create. No account, nothing for them to pay. You choose what each code can do, and when it works.Give your people a code — your mom, a friend, a coworker, a roommate. No account, nothing for them to pay. You choose what each code can do, and when it works.

Paid · Guardian accountsPaid · your Individual accountFree · everyone with your code
12 / 12
2:10 AM · Asleep

The right alert, to the right person.

Urgent lows break through silent mode. If no one responds, your backup is alerted.Urgent lows break through silent mode. If you don’t respond, your backup is alerted.

Glucose Guardian

Care, shared.

One calm place for every reading, meal, and dose — and everyone who helps.One calm place for every reading, meal, and dose — yours, and anyone you choose to share with.

Glucose Guardian provides estimates only and does not replace medical advice. Always follow your doctor’s instructions.

Who’s it for?
01 / 12
6:30 AM · Waking up

Your day, at a glance.

Live from Dexcom, Mia’syour reading updates on its own — color‑coded, with the trend. Tap the graph to switch between dots and a line — tap again to switch back.

02 / 12
6:31 AM · Coffee in hand

Tap the circle. Tap the arrow.

The circle opens Recent Readings — every value from while Miayou slept. The trend arrow opens Tips for You: patterns from heryour own numbers, each with Ask AI about this.

03 / 12
6:40 AM · Before breakfast

See it before you dose.

Type the carbs in at the top and tap Predict. Glucose Guardian draws where Miayou’ll likely land over the next two hours — before you give a single unit.

04 / 12
6:42 AM · Catching up

Every day, logged.

Flip back through the days: what was eaten, what was given, and who gave it — Mom, Dad, Grandma, or the school nurse.Flip back through the days: what you ate, what you took, and when — every entry, in one place.

05 / 12
7:05 AM · Kitchen

Snap breakfast.

Point the camera at the plate. The AI estimates the carbs — 38 g for the waffles — with fat, protein, and a confidence check.

06 / 12
7:06 AM · Kitchen

Watch the math.

Calculate Insulin fills in the carbs and the live reading, then adds each part — carb dose, correction, trend — and rounds to the nearest ½ unit.

07 / 12
7:35 AM · After breakfast

Know what’s still working.

Back on the Insulin tab, breakfast is already counted: 38 g of carbs and 2.5 u still active, with their 3‑ and 4‑hour windows — so the next dose won’t stack on top of this one.

Glucose Guardian provides estimates only and does not replace medical advice. Always follow your doctor’s instructions.
08 / 12
4:12 PM · After schoolAfter work

Ask anything.

The built‑in assistant knows Mia’s numbers and answers in plain language — what to pack, what a high means, what to check next.The built‑in assistant knows your numbers and answers in plain language — what a high means, what to bring on a run, what to check next.

09 / 12
4:20 PM · Checking in

Look back. See the trend.

The Dashboard keeps everything in one place. Activity Log shows every meal and dose and when it was logged. A1C estimates Mia’syour A1C over 1 to 90 days — and it gets more accurate the more you use it, because it’s based on what’s been logged and heryour current trends.

10 / 12
4:25 PM · Settings

Your doctor’s plan, built in.

Insulin Settings holds the carb ratio, target, and correction factor from your care team, plus every insulin you use — from Lispro to Lantus. Every estimate starts here.

Glucose Guardian provides estimates only and does not replace medical advice. Always follow your doctor’s instructions.
11 / 12
4:30 PM · Planning tomorrow

Bring in your people.

Mom is Mia’s guardian, and Dad joins as co‑guardian — each with their own account. Everyone else — the school nurse, Grandma, Grandpa, the babysitter — signs in with a code you create. No account, nothing for them to pay. You choose what each code can do, and when it works.Give your people a code — your mom, a friend, a coworker, a roommate. No account, nothing for them to pay. You choose what each code can do, and when it works.

Paid · Guardian accountsPaid · your Individual accountFree · everyone with your code
12 / 12
2:10 AM · Asleep

The right alert, to the right person.

Urgent lows break through silent mode. If no one responds, your backup is alerted.Urgent lows break through silent mode. If you don’t respond, your backup is alerted.

Your care circle
Everyone. One calm place.You, and anyone you choose.

Mia is at the center. Mom (guardian) and Dad (co‑guardian) connect directly to her — everyone else connects through them, with only the access they’re given.You’re at the center. Hand out codes to family, friends, and coworkers, and link your doctor — each with only the access you give.

Full access · guardiansCaregiver code · only the hours & permissions you setLinked doctor · suggests, you approveReadings, shared as they arrive

Who needs a paid account?

Paid accounts
  • GuardianYou manage diabetes for someone you love.
  • Co‑guardianA second guardian for the same person — each guardian has their own account.
  • IndividualYou manage your own diabetes.
Always free

Everyone who helps.

Grandparents, babysitters, school nurses, coaches, friends, coworkers — they sign in with a code from a Guardian or Individual account. No account to create, nothing to pay.

Who’s behind it

Two founders. One reason.

Glucose Guardian was built by people who live with diabetes care every day — and wanted one calm place for everyone who helps.

Co‑founderBrian Bethea
“[Brian’s story — the moment that made you build this, and what you want families to feel when they open the app.]”
Co‑founderBrett Hoffman
“[Brett’s story — his connection to diabetes and why he joined to build Glucose Guardian.]”

Important: Glucose Guardian provides estimates only and does not replace medical advice. Always follow your doctor’s instructions. Screens show sample data.

Glucose Guardian provides estimates only and does not replace medical advice. Always follow your doctor’s instructions.