Comparison

Glapp vs Lettest

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

Head to head
About

Glapp

Track your GLP-1 medication, monitor weight loss, and understand your body's response to treatments like Ozempic and Wegovy. This community-driven app helps you log doses, analyze effectiveness, and receive personalized tips for sustainable lifestyle changes. It also manages medication supply and prioritizes user privacy.

Highlights
  • Log GLP-1 medication doses and injection sites
  • Monitor weight loss progress
  • Analyze dose effectiveness and side effects
  • Track medication supply and expiry dates
  • Receive personalized nutrition and lifestyle tips
  • Access research-backed GLP-1 information
Features
Read full description

Glapp is a smart GLP-1 medication tracker and weight loss tracker built for people using Mounjaro®, Ozempic®, Wegovy®, Zepbound®, tirzepatide and semaglutide. This is the first community-driven GLP1 app built by real users on the medication. Based on clinical research and scientific data, Glapp helps you track your shots, understand your body, and get the most from your GLP-1 treatment. TRACK YOUR GLP-1 JOURNEY - Log your shot in seconds - dose, timing, injection site. - Monitor your weight loss progress at every dosage - Analyze the effectiveness of each dose by tracking food noise and hunger levels - Use the daily check-in to track side effects, cravings, mood, energy, bowel movements, and sleep quality - See how your progress compares to clinical trial data and peers UNDERSTAND YOUR MEDICATION - Medication level curve shows when semaglutide or tirzepatide peaks and fades in your body - Shot phases predict hunger, cravings, and energy shifts before they happen - Weekly progress report analyzes what actually worked SUSTAINABLE CHANGE - Personalised nutrition and coaching tips that sync with your medication cycle - Lifestyle recommendations grounded in official guidelines from the American Society for Nutrition (ASN), the American College of Lifestyle Medicine and the Obesity Medicine Association - Wisdom feature searches clinical trials and peer-reviewed research to answer your GLP-1 questions, backed by real science SUPPLY TRACKING - Keep your full medication inventory - vials, pens, concentration, volume, and BUD dates - all in one place - Every dose automatically deducts from your supply, so you always know what you have left PRIVACY FIRST - Privacy is built into the architecture, your data is encrypted and protected. - We never sell or share your information. - You decide what to track and can delete your data at any time. - Your insights remain private unless you choose to share them. Glapp Max (optional subscription) - Progress Reports - Milestones - Predictions Health Disclaimer: Glapp is designed for tracking and educational purposes only. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making any medical decisions or changes to your treatment. Terms of Use: https://glapp.io/terms-of-use Privacy Policy: https://glapp.io/privacy-policy Support: https://glapp.io/support

About

Lettest

Features
Read full description

Lettest is a weight tracker that wants you to win. Open the app and you see one thing: an ambient, living orb that pulses in colour and rhythm to reflect how you're tracking against your goal. It's calming when you're on course, gently warm when you've drifted, and quietly fades when you've been away too long. No stickers, no streak guilt, no cluttered dashboards — just a feeling of how things are going, and a beautiful chart of how things have gone. Logging is one tap. Most days you won't even need to log: if you have a smart scale connected to Apple Health, your weights flow into Lettest automatically. When you do log manually, the entry sheet pre-fills to your last weight and saves with a satisfying haptic. Your data follows you between iPhone and iPad through iCloud — silently, with no setup. Whatever you log on one device shows up on the other. LETTEST IS DESIGNED TO BE QUIET • No notifications by default. The optional reminder only fires if you haven't logged by a time you choose. • No social features, no leaderboards, no coaching content trying to upsell you. • No analytics, no third-party SDKs. The only network calls Lettest makes are to iCloud and Apple Health, both Apple-native. A LIVING ORB FOR YOUR PROGRESS The orb breathes. Its colour, brightness, and pulse speed reflect how you're tracking against your goal: • Cool blue and steady when you're on course. • Bright cyan and faster when you're ahead. • Warm amber when you've drifted off course. • Dimmed when you've been away. GOALS THAT FIT YOUR LIFE Set a target weight, a target date, a weekly rate — any combination, all optional. If you've added your height, Lettest suggests a healthy target based on a BMI of 22 (mid-range of the WHO healthy band). You can accept it or set your own. PROFILE-AWARE With your height set, Lettest shows your healthy weight range (BMI 18.5–24.9) and uses it to suggest goals. The profile prefills from Apple Health if you've granted access, so you don't type anything you didn't have to. CHARTS THAT TELL THE STORY A clean Swift Charts trend with 7-day rolling average, a dashed goal line, and 1W / 1M / 3M / 1Y / All ranges. Drag along the chart to scrub a date readout. The Y-axis tightens around your data so subtle changes are visible. UNIVERSAL APP iPhone in portrait, iPad in a two-pane layout — orb on the left, chart and recent history on the right. Light and dark themes. Full VoiceOver and Dynamic Type support. PRIVACY-FIRST Lettest stores your data in your private iCloud database. No third party sees it. No analytics. The HealthKit integration only reads the body-mass and body-fat samples you authorize, and writes back the entries you log — nothing else. Your weight history is yours. REQUIREMENTS • iPhone or iPad running iOS / iPadOS 17 or later. • iCloud account (sign in to System Settings → iCloud) for sync. Without iCloud, Lettest stores everything locally and still works. • Apple Health (optional) for automatic weight import from smart scales. Lettest is a calmly-built tool for one quiet daily habit. Weigh in. Watch the orb. Repeat.

Screenshots

Glapp4 screens
Lettest4 screens

Verdict

The call

The clearest difference is in-app purchases: Lettest at none against Glapp's 3. 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. Glapp sells 3 in-app purchases, starting at $4.99 per 7 days. Lettest asks for nothing beyond the download.

UpkeepUpdate frequency

Glapp ships an update every 11 days, Lettest weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Glapp versus Lettest: the parameters behind the verdict, then further details
ParameterGlappLettest
PriceFreeFree
Rating4.8 (1.1K ratings) — better—
Positive reviews80.1% of reviews—
Number of ratings1.1K — better—
Update frequencyEvery 11 daysWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size159 MB2 MB
Age rating4+4+
DeveloperGlapp Inc.Will Arentz

In-app purchases

3 purchases

Glapp

Subscriptions3
  • Glapp Max Weekly7 Days trial$4.997 Days
  • Glapp Max Monthly1 Month trial$9.991 Month
  • Glapp Max Annual1 Year trial$39.991 Year
None

Lettest

No in-app purchases

Questions

Is Glapp free?
Glapp is free to download, with in-app purchases available.
Is Lettest free?
Lettest is free to download, with no in-app purchases.
Do Glapp or Lettest have ads?
Neither Glapp nor Lettest shows ads.
Which is updated more often, Glapp or Lettest?
Glapp ships an update every 11 days, and Lettest weekly. Most recently, Glapp was updated on November 7, 2026 and Lettest on October 31, 2026.

Other comparisons