Comparison

T1D1 Mobile vs Split

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

Head to head
About

T1D1 Mobile

This app helps individuals with Type 1 Diabetes calculate insulin doses, track glucose, insulin, and carb intake. It's designed for those using multiple daily injections and newly diagnosed patients, offering essential tools for daily management. The app is FDA-cleared and free to use.

Highlights
  • Insulin dose calculation
  • Glucose tracking
  • Insulin intake tracking
  • Carb intake tracking
  • Data sharing with healthcare providers
  • FDA-cleared medical device
Read full description

T1D1 (Type 1 Diabetes from Day 1), all the essentials you need to get started from day 1 of diagnosis. 100% free - No subscription and no in-app purchases! Who is it for? People with Type 1 Diabetes who… -Need help calculating insulin! -Are newly diagnosed with Type 1 Diabetes -Use multiple daily injections (MDI) of short-acting insulin -Work with School nurses -Have caregivers who assist in diabetes management -Want to send their data to healthcare providers -Are taking a break from using a pump -Count carbs but are NOT on a sliding scale T1D1 implements the bolus dosing calculation as indicated by the American Diabetes Association standards of Care (https://diabetesjournals.org/care/issue/48/Supplement_1) without modifications. T1D1 is intended for people with Type 1 Diabetes aged 2 years and older who use multiple daily injections (MDI) of rapid-acting insulin. The user can calculate insulin doses based on user-entered data, track glucose, insulin, and carb intake, and share information with their healthcare team. Designed to be simple and accessible, T1D1 makes it easier for patients and families to manage the daily math of diabetes. About the creator: My name is Drew Mendelow. I was 13 years old when I was diagnosed with Type 1 Diabetes in 2020. I remember feeling so overwhelmed when I was newly diagnosed and wanted to create an app with just the essentials you need from day 1 of diagnosis. My aim is to make it simple, reliable, and accessible to all… for free! Hope this app makes your life just a little easier. Disclaimer: T1D1 is an FDA-cleared, Class II medical device for over-the-counter use. Before use, a healthcare professional must provide your target blood glucose values, insulin-to-carbohydrate ratios, and correction factor (aka insulin sensitivity factor) to be programmed into the app. While the app is designed to support insulin dosing for individuals with Type 1 Diabetes Mellitus (T1DM) from age 2 and older, for children under 13, a parent or legal guardian must create and manage the account on the child’s behalf. Legal Manufacturer: Comerge AG Bubenbergestrasse 1 Zurich, 8045 Switzerland

About

Split

Build a personalized running training plan that adapts to your schedule and goals. Easily edit workouts, rest days, and distances on the fly. Log your runs with detailed notes and sync with Strava.

Highlights
  • Build custom training plans
  • Edit plans anytime
  • Log runs with notes
  • Strava integration
  • Share progress with coaches
Read full description

Split is a place to create your training plan, shape it around your schedule, and follow it from your first run to race day. Simple tools, one clear plan. Split requires a Split Pro subscription. New members get a 7-day free trial, then $9.99/month or $79.99/year, billed to your Apple ID. BUILD A PLAN THAT FITS YOUR WEEK Start from a plan built around your goal race and goal time, or just log your runs with no race in mind. Swap workouts, move rest days, change distances. Everything is editable in seconds. CHANGE IT WHENEVER YOU NEED TO Skipped a run? Race date moved? Adjust your plan without starting over. Make the changes yourself, or tell Split what you want in plain English and it updates the plan for you. Changed your mind? Undo it. SEE WHERE YOU ARE Your Plan tab shows your race countdown, the week you're in, your weekly mileage, and what's next. Upcoming workouts for the week ahead are one tap away. LOG RUNS AND ADD NOTES Connect Strava and your runs sync automatically, or log them by hand. Open any run to see distance, pace, heart rate, and laps, and how it compared to the workout you planned. After a run, rate your effort and how it felt, flag anything that was off, and add a note for next time. A SUMMARY OF YOUR WEEK Every Sunday, get a short recap: how the week went, how hard it felt, and what's coming next. ASK SPLIT Have a question about your plan or a recent run? Ask in plain English and get answers based on your actual training. BUILT FOR EVERY RUNNER Training for a race? Build around your race date and goal time. New to running? Start with a plan that eases you in, mile by mile. Working with a coach? Share your plan and progress with them in Split. Just staying fit? Keep it simple and consistent, on your terms. Download Split and run with a plan - your plan. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.getsplit.ai/support#privacy

Screenshots

T1D1 Mobile4 screens
Split4 screens

Verdict

The call

The clearest difference is in-app purchases: T1D1 Mobile at none against Split's 2. T1D1 Mobile also leads on ratings volume (116 vs 1). Split's advantage is rating (5.0 vs 4.7). On price, update cadence, ads and device support 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. Split sells 2 in-app purchases, starting at $9.99 per month. T1D1 Mobile asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Split holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: T1D1 Mobile has 116 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

T1D1 Mobile ships an update every 2 months, Split monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
T1D1 Mobile versus Split: the parameters behind the verdict, then further details
ParameterT1D1 MobileSplit
PriceFreeFree
Rating4.7 (116 ratings)5.0 (1 ratings) — better
Positive reviews94.9% of reviews—
Number of ratings116 — better1
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size39 MB40 MB
Age rating12+4+
DeveloperT1D1Split Running Co.

Customer experience

T1D1 Mobile

All ratings97 ratings
Positive92.8%
Neutral1.0%
Negative6.2%
Written reviews39 reviews
Positive94.9%
Neutral0.0%
Negative5.1%

Split

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

T1D1 Mobile

No in-app purchases

2 purchases

Split

Subscriptions2
  • Split Pro Monthly7 Days trial$9.991 Month
  • Split Pro Annual7 Days trial$79.991 Year

Questions

Is T1D1 Mobile free?
T1D1 Mobile is free to download, with no in-app purchases.
Is Split free?
Split is free to download, with in-app purchases available.
Which has better reviews, T1D1 Mobile or Split?
Split is rated higher. T1D1 Mobile averages 4.7 out of 5 from 116 ratings, while Split averages 5.0 from 1 ratings.
Do T1D1 Mobile or Split have ads?
Neither T1D1 Mobile nor Split shows ads.
Which is updated more often, T1D1 Mobile or Split?
T1D1 Mobile ships an update every 2 months, and Split monthly. Most recently, T1D1 Mobile was updated on October 30, 2026 and Split on October 31, 2026.

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