Comparison

75 Days Challenge vs Winter Arc by Coldstart

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

Head to head
About

75 Days Challenge

This app helps you build lasting habits by tracking your progress on custom challenges. Set flexible durations, log daily progress with photos and notes, and monitor weight trends. Stay motivated with home screen widgets to maintain your streaks.

Highlights
  • Custom challenges
  • Flexible durations
  • Home Screen widgets
  • Photo progress & compare
  • Notes on every entry
  • Weight tracking & summaries
Features
Read full description

Your challenge. Your rules. Set a goal, pick the duration, add your tasks — and show up every day. Run a 15-day sprint, a 30-day reset, a 75-day grind, a 90-day marathon — or anything from 1 to 365 days. Better keeps you accountable and makes progress visible. Build your challenge Create any habit challenge with custom tasks. Choose binary tasks (done/not done) or incremental ones (track reps, glasses, pages). Set reminders so nothing slips. See your transformation Snap daily progress photos and compare them side by side. Log weight and body measurements to watch trends over weeks and months. Write journal entries — even add voice notes — to stay mindful. Stay connected to your health Sync with Apple Health to auto-track steps, calories, water, sleep, exercise minutes, and more — 14 health metrics that update your tasks automatically. Get coached by AI Stuck in a rut? Ask your AI coach for advice on habits, motivation, or your weekly progress. It knows your data and gives personalized nudges. Join the community Share updates, follow friends, cheer each other on with likes and comments. Seeing others show up makes you want to show up too. Celebrate every win Unlock achievements across 9 categories, watch your streak grow on the activity heatmap, and share custom progress cards. Lives on your Home Screen Home screen and lock screen widgets let you check off tasks without even opening the app. One tap. Done. Available in 35+ languages. Subscription Better offers a 7-day free trial so you can explore everything the app has to offer. After the trial, payment will be charged to your Apple ID account. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. You can manage and cancel your subscription in your Apple ID account settings. Ready to start? Make today Day 1. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.joinbetter.app/privacy-policy Contact us: alexander.feedback@icloud.com

About

Winter Arc by Coldstart

This app helps you achieve personal growth goals with a unique contract system. Create daily, weekly, or monthly tasks, sign and share your commitments, and track your progress with reminders and social sharing. Unlock unlimited tasks and notifications with a pro upgrade.

Highlights
  • Create custom or premade task contracts
  • Set daily, weekly, or monthly tasks
  • Sign and share goal contracts
  • Track progress with checklists
  • Receive reminders and inspirational quotes
  • Share progress on social media
Features
Read full description

Coldstart is the best app to help you accomplish all your goals for growth during the winter period. The beautifully designed and animated user experience is centered on helping you focus, and accomplish all of your goals. Here's how it works. 1. Create your task Choose from one of our premade contract or create your own from scratch. Set up daily, weekly or monthly tasks that you want to accomplish. Select how long your want your winter arc contract to go on for. 2. Sign and share your contract Once you're happy with your winter contract, sign it and then share it with friends and the rest of the world. 3. Start and finish your contract Open up the app and cross off tasks from your check list. Get reminders and inspiration from quotes and notifications that are there to remind you of your goal. Share your progress to social media and with friends to inspire them to continue. See how close you are to your goal and to completing your Winter Arc. Want to set up more tasks? Upgrade to our pro plan and get unlimited tasks and daily notifications so you can unlock your best version. Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Terms of Service URL: https://www.winterarc.io/terms

Screenshots

75 Days Challenge4 screens
Winter Arc by Coldstart4 screens

Verdict

The call

The clearest difference is update cadence: 75 Days Challenge at every 2 weeks against Winter Arc by Coldstart's every 6 weeks. 75 Days Challenge also leads on ratings volume (692 vs 99). Winter Arc by Coldstart's advantage is iOS requirement (16.4 vs 18.0). On price, rating, ads and in-app purchases 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. 75 Days Challenge sells 18 in-app purchases, starting at $1.99 per 7 days and Winter Arc by Coldstart sells 7 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for 75 Days Challenge against 4.8 for Winter Arc by Coldstart. That said, the two scores are not equally well evidenced: 75 Days Challenge has 692 ratings behind it against 99, so its average is the more settled of the two.

UpkeepUpdate frequency

75 Days Challenge ships an update every 2 weeks, Winter Arc by Coldstart every 6 weeks. Both last shipped on October 30, 2026.

Scorecard3 real differences · 7 level
75 Days Challenge versus Winter Arc by Coldstart: the parameters behind the verdict, then further details
Parameter75 Days ChallengeWinter Arc by Coldstart
PriceFreeFree
Rating4.8 (692 ratings)4.8 (99 ratings) — better
Positive reviews57.4% of reviews—
Number of ratings692 — better99
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS18.016.4 — better
Further details — not scored
Size91 MB71 MB
Age rating4+4+
DeveloperAlexander ParnevTheRoaming, Inc

Customer experience

75 Days Challenge

All ratings690 ratings
Positive94.3%
Neutral2.8%
Negative2.9%
Written reviews68 reviews
Positive57.4%
Neutral7.4%
Negative35.3%

Winter Arc by Coldstart

All ratings42 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

75 Days Challenge

Reported bugs

4 issues
  • Settings page freezes app
  • Checklist widget doesn't update automatically
  • App gets stuck on day 6 and won't unlock
  • Camera function is unreliable

Requested features

4 requests
  • Add ability to start over at day 1 instead of resetting whole challenge
  • Integrate with friends/social features
  • Expand tracking capabilities beyond just weight and photos
  • Add more customization options

Winter Arc by Coldstart

Not enough reviews yet to summarise bugs or requests.

In-app purchases

18 purchases

75 Days Challenge

Subscriptions12
  • Full Access (Weekly)3 Days trial$1.997 Days
  • Full Access$2.991 Month
  • Full Access (Monthly)$3.991 Month
Show 9 more
  • Pro3 Days trial$5.997 Days
  • Full Access (Weekly)$5.997 Days
  • Full Access$5.991 Month
  • Full Access (Monthly)$9.991 Month
  • Full Access (Annual)7 Days trial$19.991 Year
  • Full Access (Annual)7 Days trial$29.991 Year
  • Full access7 Days trial$39.991 Year
  • Full Access (Annual)7 Days trial$49.991 Year
  • Pro7 Days trial$59.991 Year
One-time6
  • Small Tip$0.99
  • Medium Tip$2.99
  • Lifetime Premium$5.99
Show 3 more
  • Lifetime Pro$9.99
  • Lifetime Premium$19.99
  • Lifetime Pro$59.99
7 purchases

Winter Arc by Coldstart

Subscriptions7
  • Winter Arc Pro$2.991 Month
  • Winter Arc Pro (Monthly)3 Days trial$5.991 Month
  • Winter Arc Pro Weekly$9.997 Days
Show 4 more
  • Winter Arc Pro (6 months)$14.996 Months
  • Winter Arc Pro (Annual)$24.991 Year
  • Winter Arc Pro (Six Months)$24.996 Months
  • Winter Arc Pro Annual$49.991 Year

Questions

Is 75 Days Challenge free?
75 Days Challenge is free to download, with in-app purchases available.
Is Winter Arc by Coldstart free?
Winter Arc by Coldstart is free to download, with in-app purchases available.
Which has better reviews, 75 Days Challenge or Winter Arc by Coldstart?
Winter Arc by Coldstart is rated higher. 75 Days Challenge averages 4.8 out of 5 from 692 ratings, while Winter Arc by Coldstart averages 4.8 from 99 ratings.
Do 75 Days Challenge or Winter Arc by Coldstart have ads?
Both 75 Days Challenge and Winter Arc by Coldstart show ads.
Which is updated more often, 75 Days Challenge or Winter Arc by Coldstart?
75 Days Challenge ships an update every 2 weeks, and Winter Arc by Coldstart every 6 weeks. Most recently, 75 Days Challenge was updated on October 30, 2026 and Winter Arc by Coldstart on October 30, 2026.

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