Comparison

Invoy+ vs Sugar

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

Head to head
About

Invoy+

Understand your metabolism with daily breath tests and personalized guidance. Track your fat burn, weight, and key health metrics to see how your habits impact your results. Designed for those seeking data-driven insights for lasting health changes.

Highlights
  • Daily fat burn measurement via breath test
  • Track weight and health metrics
  • Analyze habit impact on metabolism
  • Personalized guidance and insights
  • Monitor progress with trends
  • Integrates with Apple Health
Features
Read full description

Understand your metabolism with a simple breath test. Unlike traditional weight loss programs that rely solely on the scale, Invoy combines daily breath measurements, health data, and personalized guidance to help you understand how your behaviors influence your metabolism. With Invoy, you can: - Measure your daily fat burn with a simple breath test - Track weight and key health metrics - Discover how sleep, nutrition, activity, and other habits affect your results - Receive personalized guidance and key insights - Monitor progress over time with easy-to-understand trends Invoy is designed for people committed to making lasting changes to their health and wellness through data driven insights and daily habits. Availability: Invoy is currently available through participating employers, health systems, and clinics. Health Data: Invoy can display select data from Apple Health (HealthKit) Important Information: Invoy’s breath device falls within FDA’s definition of a wellness product. Please see invoy.com for further information and links to the FDA guidance document. Please note that Invoy does not provide medical advice. If you have any questions about whether a weight management program is right for you, please check with your doctor first.

About

Sugar

Features
Read full description

Logging your blood sugar shouldn't feel like filling out paperwork. Just type the way you naturally would: "102 oatmeal and coffee" Sugar parses it, saves it, and keeps your reading organized. Open the app, log your reading, and get on with your day. WHY YOU'LL LOVE SUGAR Log naturally: Type your reading in plain language with notes about food, exercise, or anything else. Voice logging: Say your reading aloud and Sugar records it in seconds. Quick tags: Mark readings as fasting, before meals, after meals, or bedtime with a tap. Smart reminders: Reminders for you to log your blood sugar Apple Health integration: Import existing readings and automatically save new ones back to Apple Health. Cloud sync: Your readings are securely stored in your account and synced across your devices. Personalize your experience: Choose mg/dL or mmol/L, set your target range, and customize your theme. Discover trends: View clean charts, 30-day averages, and patterns that help you understand your glucose over time. Export anytime: Share your history with family members or your healthcare provider whenever you need. MADE FOR EVERYDAY TRACKING Whether you're living with diabetes, managing prediabetes, or simply keeping an eye on your blood sugar, Sugar makes tracking quick, simple, and stress-free. Sugar is free to use, with an optional Pro subscription that unlocks advanced insights, Apple Health import, premium themes, and more. Download Sugar today and log your first reading in seconds. Sugar is a logging and informational tool and does not provide medical advice. Privacy Policy: https://www.sugarglucose.com/privacy Terms: https://www.sugarglucose.com/terms

Screenshots

Invoy+4 screens
Sugar3 screens

Verdict

The call

The clearest difference is in-app purchases: Invoy+ at none against Sugar's 2. Sugar's advantage is update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement 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. Sugar sells 2 in-app purchases, starting at $4.99 per month. Invoy+ asks for nothing beyond the download.

UpkeepUpdate frequency

Invoy+ ships an update fortnightly, Sugar every 4 days. Both last shipped on October 24, 2026.

Scorecard2 real differences · 7 level
Invoy+ versus Sugar: the parameters behind the verdict, then further details
ParameterInvoy+Sugar
PriceFreeFree
Rating5.0 (7 ratings) — better—
Number of ratings7 — better—
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size99 MB71 MB
Age rating17+4+
DeveloperInvoyAndy Tang

In-app purchases

None

Invoy+

No in-app purchases

2 purchases

Sugar

Subscriptions2
  • Sugar Pro (Monthly)7 Days trial$4.991 Month
  • Sugar Pro Yearly7 Days trial$44.991 Year

Questions

Is Invoy+ free?
Invoy+ is free to download, with no in-app purchases.
Is Sugar free?
Sugar is free to download, with in-app purchases available.
Do Invoy+ or Sugar have ads?
Neither Invoy+ nor Sugar shows ads.
Which is updated more often, Invoy+ or Sugar?
Invoy+ ships an update fortnightly, and Sugar every 4 days. Most recently, Invoy+ was updated on October 24, 2026 and Sugar on October 24, 2026.

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