Comparison

t vs Happy Bob

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

Head to head
About

t

Explore the features of an insulin pump's touchscreen interface without needing a prescription. This app is ideal for individuals with diabetes, their caregivers, or healthcare professionals to understand pump functionality.

Highlights
  • Explore touchscreen interface
  • Demonstrates pump features
  • No prescription required
  • Educational tool
  • Mobile device compatible
Features
Read full description

The t:simulator™ App is an easy way to explore the simple touchscreen interface of the t:slim X2™ Insulin Pump from Tandem Diabetes Care, no prescription or insurance verification required! Whether you’re a person living with diabetes, a relative or caregiver, or a healthcare provider, we make it simple to explore the t:slim X2 Pump’s features on your mobile device. THIS APPLICATION IS FOR DEMONSTRATION PURPOSES ONLY. IT SHOULD NOT BE USED FOR THERAPY DECISIONS. Due to the variety of sizes of compatible devices, the t:simulator App may not display the pump at actual size. Actual size is 2” x 3.13”. Please refer to the Technical Specifications in the Resources section of the app for more detailed information.

About

Happy Bob

This app transforms diabetes data into engaging experiences, connecting with CGMs to help users stay in range and reduce management stress. It offers fun glucose tracking, motivating goals, and community support, designed by people with diabetes for a more personal approach.

Highlights
  • Connects with CGMs (Dexcom, FreeStyle Libre)
  • Fun glucose tracking with personalized messages
  • Motivating goal setting with star rewards
  • Community support with diabuddies
  • Apple Health and Apple Watch integration
  • Monthly challenges for healthy habits
  • Pregnancy & Diabetes support (Premium)
Features
Read full description

Feel better about your diabetes!
 Happy Bob is your personal digital health companion that connects with your continuous glucose monitor and turns your diabetes data into motivating, friendly, and fun experiences — helping you stay in range while reducing the stress of daily diabetes management. Designed by people with diabetes, Happy Bob helps you feel like a person, not a patient. Supported Data Sources • Dexcom G6, Dexcom G7, and Dexcom ONE+
 → Real-time glucose updates delivered instantly through Happy Bob.
 • FreeStyle Libre 1, 2, 3, and 3+ (U.S. only)
 → Data available with a slight delay and intended for wellness purposes only.
 When used with Abbott’s Continuous Glucose Monitoring Systems, Happy Bob is intended for non-medical use for wellness purposes only. The information displayed is for reference and you must use your Abbott CGM reader or display device for diabetes management decisions. Why Happy Bob? • Glucose tracking made fun: Your values come with humorous, personalized messages that reduce data anxiety. • Motivating goals: Set a star target and collect stars for every in-range reading. • Community support: Create a group with your diabuddies, share data, and cheer each other on. • Apple Health integration: Sync steps and activity for a more complete view of your day. • Apple Watch compatibility: Check glucose at a glance—plus a smile from Bob. • Dexcom real-time compatible and supportive of FreeStyle Libre (wellness-only). New Features • Monthly Challenges  Stay motivated with monthly glucose and activity challenges designed to help you build healthy habits one month at a time. • Happy Mom — Support for Pregnancy & Diabetes A dedicated experience supporting people who are pregnant or planning pregnancy while managing Type 1, Type 2, or gestational diabetes. Available with Premium Subscription.  Happy Bob Premium – Try Free for 7 Days! Free version of Happy Bob can be used to connect to CGMs and view basic glucose data. To unlock the full experience upgrade to Premium version: •Multiple funny moods — each with a unique character and tone of voice that reacts to your glucose values. (including fan-favorite Snarky Bob) • In-app glucose & activity statistics • Dashboard for simplified data insights What our users are saying: “Happy Bob helps take the stress out of daily diabetes management.” “I’ve been a Type 1 diabetic for 35 years—never has trying to keep my blood sugars in range been so much fun!” “My 9-year-old LOVES Snarky Bob! She loves trying to earn stars.” “Best thing ever since they invented CGMs.” “He is always there to remind you of your numbers.” Who is Happy Bob for? • People with Type 1, Type 2, Gestational, or Prediabetes • Caregivers • Healthcare providers – Supports data sharing between patients and care teams for improved remote engagement. • Diabetes advocacy organizations Subscription Free 7-day trial with Premium subscription. Monthly and yearly plans available. Pricing varies by region. Manage auto-renewal in iTunes Account Settings. About Happy Bob Built by people with diabetes, for people with diabetes. Our mission is to support you in feeling like a person—not just a patient—every step of the way. Note: The data displayed in this app is for informational purposes only and should not be used for medical decisions. FreeStyle Libre data is intended for non-medical wellness use and may be delayed.
 Terms of Use: https://happybob.app/terms-of-use
 Privacy Policy: https://happybob.app/privacy-policy

Screenshots

t3 screens
Happy Bob4 screens

Verdict

The call

The clearest difference is rating: Happy Bob at 4.7 against t's 3.6. Happy Bob also leads on review sentiment (68% vs 42%) and update cadence (every 3 weeks vs every 2 months). t's advantage is in-app purchases (none vs 6). 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. Happy Bob sells 6 in-app purchases, starting at $7.99 per month. t asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Happy Bob holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: Happy Bob has 1.2K ratings behind it against 116, so its average is the more settled of the two. Written reviews point the same way: 42% of t's written reviews are positive against 68% of Happy Bob's.

UpkeepUpdate frequency

t ships an update every 2 months, Happy Bob every 3 weeks. The most recent releases landed on October 13, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
t versus Happy Bob: the parameters behind the verdict, then further details
ParametertHappy Bob
PriceFreeFree
Rating3.6 (116 ratings)4.7 (1.2K ratings) — better
Positive reviews42.4% of reviews68.0% of reviews — better
Number of ratings1161.2K — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPod, Apple Watch
Requires iOS15.1 — better15.6
Further details — not scored
Size31 MB35 MB
Age rating4+4+
DeveloperTandem Diabetes Care, Inc.Harald AI

Customer experience

t

All ratings116 ratings
Positive62.1%
Neutral9.5%
Negative28.4%
Written reviews66 reviews
Positive42.4%
Neutral4.5%
Negative53.0%

Happy Bob

All ratings1,134 ratings
Positive92.7%
Neutral2.5%
Negative4.9%
Written reviews153 reviews
Positive68.0%
Neutral11.1%
Negative20.9%

User reviews

t

From 116 App Store ratings

What we love

  • 👍 Great for education and training
  • 👍 Realistic pump interface replica
  • 👍 Useful for pre-pump decision making
  • 👍 Easy to use and understand
  • 👍 Helpful for understanding the pump

Room to improve

  • 🐛 Simulator not interactive
  • 🐛 Doesn't simulate real-world issues (occlusions)
  • 🐛 Lacks confirmation screens and alarms
  • 🐛 Not a true simulation of pump usage
  • 🐛 Only shows basic functions

Happy Bob

From 1.2K App Store ratings

What we love

  • 🚀 Motivational
  • 🚀 Helpful for managing diabetes
  • 👍 Fun and engaging
  • 👍 Cute characters and personalities
  • 👍 Provides encouragement and positivity

Room to improve

  • 🐛 Occasional glitches or syncing issues
  • 💰 Expensive subscription
  • 💬 Some comments can be too snarky or inappropriate for children

Bugs and requests

t

Reported bugs

13 issues
  • App won't open once downloaded
  • Simulator crashes on launch
  • App broken on iOS 12
  • Simulator app broken on iOS 12
  • Simulator crashes as soon as app is open
Show 8 more
  • Simulator not working
  • App crashes when opening on iPhone X
  • Simulator crashes on iOS 12
  • Simulator doesn't work
  • App bombs on launch
  • Lagging and not working properly
  • Doesn't update as often
  • US version installed on iPhone, needs German version

Requested features

14 requests
  • Actual app to control and manage the pump
  • App available in Canada/Europe
  • Display beep noises for alerts
  • Simulate real-world issues like occlusions
  • Ability to simulate changing the pump
Show 9 more
  • Bolus from the app
  • Option to change mmol/l to mg/dl
  • Bluetooth control of the pump
  • App to upload reports from the pump for iPad
  • Integrate with Apple Watch for alerts
  • Actual app that sends information to phone
  • Simulate confirmation screens and alarms
  • More realistic simulation of pump usage
  • Display insulin on board information

Happy Bob

Reported bugs

3 issues
  • App not working after recent update
  • Login issues for some users
  • Delayed or inaccurate data sync

Requested features

4 requests
  • Ability to customize or choose different characters
  • Integration with other CGM devices like Libre
  • More positive and understanding feedback, especially for minor blood sugar fluctuations
  • Option to silence notifications during certain times of day

In-app purchases

None

t

No in-app purchases

6 purchases

Happy Bob

Subscriptions4
  • Monthly Premium7 Days trial$7.991 Month
  • Monthly Coach+$69.001 Month
  • Yearly Premium7 Days trial$69.991 Year
Show 1 more
  • Yearly Coach+$699.001 Year
One-time2
  • Robert S. Pumpkins$0.99
  • Frosty Bob$0.99

Questions

Is t free?
t is free to download, with no in-app purchases.
Is Happy Bob free?
Happy Bob is free to download, with in-app purchases available.
Which has better reviews, t or Happy Bob?
Happy Bob is rated higher. t averages 3.6 out of 5 from 116 ratings, while Happy Bob averages 4.7 from 1.2K ratings.
Do t or Happy Bob have ads?
Neither t nor Happy Bob shows ads.
Which is updated more often, t or Happy Bob?
t ships an update every 2 months, and Happy Bob every 3 weeks. Most recently, t was updated on October 13, 2026 and Happy Bob on October 21, 2026.

Other comparisons