Comparison

GLP 1 Tracker vs StackDays

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

Head to head
About

GLP 1 Tracker

Track your GLP-1 medication journey, including doses, meals, weight, and side effects. This app helps you monitor your progress and understand how your body changes while on medications like Wegovy or Ozempic. It offers a comprehensive overview of your health and wellness.

Highlights
  • Track weight, measurements, and progress photos
  • Log meals by photo, barcode, or voice
  • Monitor GLP-1 doses and injection sites
  • Record and analyze side effects
  • Sync workouts and activity from Apple Health
  • Two-way Apple Health data sync
Features
Read full description

Track your whole GLP-1 journey in one place — doses, meals, weight, side effects, and every win in between. Tonic is built for how your body actually changes on Wegovy, Zepbound, Ozempic, and Mounjaro. WHAT YOU CAN TRACK • Weight, measurements, and progress photos — watch your story unfold • Meals by photo*, barcode, or voice — log a real meal in seconds, not minutes • GLP-1 doses, injection sites, and dose-day reminders so you never miss a shot • Side effects like nausea, fatigue, and mood — catch the patterns early • Workouts, steps, and activity, synced from Apple Health WHY TONIC Most weight apps were built before GLP-1 existed. They count calories, guilt-trip you over streaks, and miss the point. Tonic connects your dose, your symptoms, your meals, and your weight into one story — because on a GLP-1, that's how it all moves together. • Built for GLP-1 from the ground up — Wegovy, Zepbound, Ozempic, and Mounjaro all supported • Works without medication too — plenty of people start with Tonic before their first shot • Two-way Apple Health sync — your data stays under your control • Sign in with Apple — no passwords, no email lists • No ads. Ever. BUILT FOR REAL DAYS Side effects and plateaus come with the territory. Tonic owns the hard days, celebrates the ones worth celebrating, and never guilts you for a missed log. Log when you can — Tonic meets you where you are. PRIVACY FIRST Your weight, your meals, your medication — they're yours. Tonic keeps your data private and never sells it. Only anonymous diagnostics ever leave the app, and only to fix bugs. WORKS WITH APPLE HEALTH Tonic reads what you choose to share — weight, activity, nutrition, workouts — and writes weight and water back, so your timeline stays in sync across your devices. You approve every data type, one at a time. START IN UNDER A MINUTE Tell Tonic where you are on your journey, log your first weight, and you're in. The plan moves as you do. SUBSCRIPTION & LEGAL Tonic offers an auto-renewing subscription. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your Apple Account settings. *AI MEAL SCANNING AND INSIGHTS FROM TONIC REQUIRE A TONIC PREMIUM SUBSCRIPTION. Terms of Use (EULA): https://asktonic.com/terms Privacy Policy: https://asktonic.com/privacy

About

StackDays

Features
Read full description

StackDays is the habit tracker you actually stick with, because you're not doing it alone. Build daily habits, grow your streak one day at a time, and keep your friends accountable right alongside you. Whether you want to drink more water, read every night, train for a race, meditate, study or just build a better routine, StackDays turns small daily wins into a streak you won't want to break. STACK YOUR DAYS - Check off habits in one tap and watch your streak grow - Track anything: a simple daily check-in, or a number like kilometres, minutes, reps, pages or glasses of water - Every day, a few times a week or a few times a month: set the schedule that fits - Give each habit its own goal, colour and emoji - Forgot to log yesterday? Tap the day and fix it - Drag to reorder your habits and Home sections STAY ACCOUNTABLE WITH FRIENDS People follow through far more often when someone is watching. StackDays makes that visible every day. - Add friends with a simple invite code and see each other's streaks - Run challenges together with shared habits, a start and end date, and a live leaderboard - Team chat inside every challenge - Get a nudge when a friend passes you SEE YOUR PROGRESS - Day, week and month views of everything you log - A 12-week consistency heatmap - Your strongest and weakest weekdays - A calendar for every habit that shows your streaks as connected runs - Monthly completion trends - Printable PDF months and shareable streak cards PROTECT YOUR STREAK - Streak powers rescue a missed day (three new ones every month) - Vacation mode pauses everything while you're away - Habit reminders at the times you choose - A heads-up before a streak you've earned is at risk CELEBRATE MILESTONES Badges and milestone ladders unlock as your streaks grow, from your very first day onwards. MAKE IT YOURS - Light, dark or automatic theme - Six accent colours, or pick your own - Four text sizes and optional haptics - Apple Health sync for steps, distance and workout minutes PRIVATE BY DESIGN No ads, and your data is never sold. Export your months as PDF, or delete your account whenever you like. ONE PLAN, EVERYTHING INCLUDED StackDays is one subscription with every feature. Monthly and yearly plans start with a 3-day free trial: cancel before it ends and you won't be charged. A one-time lifetime purchase is also available. Payment is charged to your Apple Account when you confirm the purchase, or when the trial ends. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in your App Store account settings. Terms of Use (EULA): https://stackdays-efb6b.web.app/terms.html Privacy Policy: https://stackdays-efb6b.web.app/privacy.html Stack up your days, one habit at a time.

Screenshots

GLP 1 Tracker4 screens
StackDays4 screens

Verdict

The call

The clearest difference is ads: GLP 1 Tracker at none against StackDays's shown. StackDays's advantage is iOS requirement (15.3 vs 26.2). On price, update cadence, in-app purchases 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. GLP 1 Tracker sells 14 in-app purchases, starting at $5.99 per 7 days and StackDays sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

GLP 1 Tracker ships an update every 4 days, StackDays weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 7 level
GLP 1 Tracker versus StackDays: the parameters behind the verdict, then further details
ParameterGLP 1 TrackerStackDays
PriceFreeFree
Rating4.6 (19 ratings) — better—
Number of ratings19 — better—
Update frequencyEvery 4 days — betterWeekly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS26.215.3 — better
Further details — not scored
Size143 MB97 MB
Age rating12+4+
DeveloperPrisma LabsRHH LLC

In-app purchases

14 purchases

GLP 1 Tracker

Subscriptions14
  • Weekly (1 Week)7 Days trial$5.997 Days
  • Weekly (1 Week)7 Days trial$6.497 Days
  • Weekly (1 Week)7 Days trial$8.997 Days
Show 11 more
  • Monthly (1 Month)7 Days trial$9.991 Month
  • Monthly (1 Month)$9.991 Month
  • Monthly (1 Month)$14.991 Month
  • Monthly (1 Month)$16.991 Month
  • Monthly (1 Month)7 Days trial$17.991 Month
  • Monthly (1 Month)7 Days trial$19.991 Month
  • Yearly (1 Year)7 Days trial$34.991 Year
  • Yearly (1 Year)7 Days trial$39.991 Year
  • Yearly (1 Year)2 variants$44.991 Year
  • Yearly (1 Year)7 Days trial$69.991 Year
  • Yearly (1 Year)7 Days trial$79.991 Year
3 purchases

StackDays

Subscriptions2
  • Monthly Pro3 Days trial$2.991 Month
  • Annual Pro3 Days trial$24.991 Year
One-time1
  • Lifetime Pro$59.99

Questions

Is GLP 1 Tracker free?
GLP 1 Tracker is free to download, with in-app purchases available.
Is StackDays free?
StackDays is free to download, with in-app purchases available.
Do GLP 1 Tracker or StackDays have ads?
StackDays shows ads; GLP 1 Tracker does not.
Which is updated more often, GLP 1 Tracker or StackDays?
GLP 1 Tracker ships an update every 4 days, and StackDays weekly. Most recently, GLP 1 Tracker was updated on October 28, 2026 and StackDays on October 24, 2026.

Other comparisons