Comparison

Undiet vs CT PROGRESS PARTNER

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

Head to head
About

Undiet

Features
Read full description

Undiet is a private tracker for your weight journey and a community of people walking the same road. Log how your day went, keep progress photos in a vault that never leaves your phone, mark which diet or treatment you are on, and see what actually works for you. NEW IN UNDIET 2.0 Undiet has been rebuilt from the ground up. If you used the original Undiet with an email account, sign in with the same email and your history comes along. The photo tracker is back, now with a locked vault and side by side compare, joined by a diet catalog, a community and a calmer way to log your day. YOUR PHOTOS STAY ON YOUR PHONE Progress photos are stored only on this device, behind Face ID or your passcode. They are never uploaded, never shared and never used to train anything. Not even we can see them. Line up front and side photos from any two dates and watch the change. EFFORT, NOT CALORIES No food database, no barcode scanning, no counting. Each day you log your weight and how much effort the day took, in a couple of taps. Over weeks the graph shows the trend, and the streak rewards showing up, never the number on the scale. ONE TIMELINE, ANY DIET Pick what you are on from a catalog of eating patterns and treatments: Mediterranean, keto, low carb, intermittent fasting, calorie counting, vegetarian, high protein, GLP-1 therapy (semaglutide, tirzepatide, liraglutide) and dozens more, or simply no diet, just tracking. Switch any time. Your journey becomes a timeline of periods with the weight curve over all of them, so you can see what worked for you and what happened after you stopped. GLP-1 DIARY On medication? Record doses, appetite and how you feel through titration, therapy and the maintenance phase afterwards. It is a diary, not a dosing guide: always follow your doctor. PEOPLE ON THE SAME ROAD Your journey is private. The Community is a separate space under a nickname: share a check in, ask a question anonymously, send a word of support. Supportive reactions only, no downvotes, and photos can never be posted. Report and block are one tap away and every post is moderated. YOUR DATA IS YOURS β€’ Progress photos never leave the device β€’ Nickname only in the community, no real names β€’ No ads, no data selling, no tracking across apps β€’ Export everything or delete your account in two taps, from inside the app UNDIET PLUS Tracking, the catalog and the community are free. Undiet Plus unlocks unlimited photo history, your full weight trend over all time and the stats for every diet period. Auto renewing subscription: EUR 6.99 per month or EUR 39.99 per year with a 7 day free trial on the yearly plan (prices may vary by country). Payment is charged to your Apple ID at confirmation of purchase or when the trial ends. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it in your App Store account settings. Undiet does not give medical or dietary advice and is not a substitute for your doctor. The catalog describes diets and treatments neutrally so you can record what you are on. Undiet is for people aged 16 and over. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms: https://undiet.krnic.be/terms Privacy Policy: https://undiet.krnic.be/privacy

About

CT PROGRESS PARTNER

Features
Read full description

Kick-start your fitness journey with CT PROGRESS PARTNER. Together with Chantell Thompson, you'll have the best combination of nutrition & exercises available on a single app. With CT PROGRESS PARTNER, you can begin your fitness journey in no time. Get a fully personalized workout and meal plan tailored to your fitness goals. Progress tracking gets easier when you log your daily workout, record meals, update your check-ins and connect your fitness band & health kit, and get real-time updates via advanced analytical tools. Everything that contributes to your fitness goals gets captured in one place. To top it all, use the inbuilt 1-1 chat feature to have all your queries addressed on the go. You deserve to be the best. That’s why CT PROGRESS PARTNER have packed so many features in a single app to help you achieve your fitness goals. Start your journey today! Features that will help you achieve your fitness goals include: * Personalized Workout Plan: Get a fully personalized fitness plan tailored to your goals, whether it is to gain weight, lose weight, gain muscles, or simply wish to work on your general fitness. * Nutrition, Hydration & Habits: Access meal plans assigned by your coach and log your food intake to keep a close track of your calorie intake and macros. You can also track your hydration, steps and calories burnt on the app. * Instant messaging & video calls - Message your coach in real-time and schedule video sessions directly from the app. Stay connected with your coach to improve compliance and get better results. * Check-ins: Gain complete insight into your overall performance with easy check-ins and real-time updates. * Progress: Stay on top of your progress with powerful analytics. * Wearable integration: Get the bigger picture of your progress by connecting your fitness band & health kit thereby enabling real-time updates. Note regarding Apple Health: The app integrates with Apple Health to show your daily activity - distance, steps, active energy, and flights to help you better achieve your goals. App also uses Apple Health to track energy burned and heart rate during a workout session, if an Apple Watch is used. Workout metrics are shared with the coach to better design your workout schedule. DISCLAIMER: Users should seek a doctor’s advice before using this app and making any medical decisions.

Screenshots

Undiet4 screens
CT PROGRESS PARTNER4 screens

Verdict

The call

The clearest difference is in-app purchases: CT PROGRESS PARTNER at none against Undiet's 2. Undiet's advantage is update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Undiet sells 2 in-app purchases, starting at $5.99 per month. CT PROGRESS PARTNER asks for nothing beyond the download.

UpkeepUpdate frequency

Undiet ships an update weekly, CT PROGRESS PARTNER every 2 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard2 real differences Β· 4 level
Undiet versus CT PROGRESS PARTNER: the parameters behind the verdict, then further details
ParameterUndietCT PROGRESS PARTNER
PriceFreeFree
Update frequencyWeekly β€” betterEvery 2 months
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.0 β€” better
Further details β€” not scored
Size43 MB133 MB
Age rating17+17+
DeveloperKrnicChantell Thompson

In-app purchases

2 purchases

Undiet

Subscriptions2
  • Undiet Plus Monthly$5.991 Month
  • Undiet Plus Yearly7 Days trial$34.991 Year
None

CT PROGRESS PARTNER

No in-app purchases

Questions

Is Undiet free?
Undiet is free to download, with in-app purchases available.
Is CT PROGRESS PARTNER free?
CT PROGRESS PARTNER is free to download, with no in-app purchases.
Do Undiet or CT PROGRESS PARTNER have ads?
Neither Undiet nor CT PROGRESS PARTNER shows ads.
Which is updated more often, Undiet or CT PROGRESS PARTNER?
Undiet ships an update weekly, and CT PROGRESS PARTNER every 2 months. Most recently, Undiet was updated on October 26, 2026 and CT PROGRESS PARTNER on October 27, 2026.

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