Comparison

75 Tough & Soft Challenge vs FlexChallenge

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

Head to head
About

75 Tough & Soft Challenge

This app provides tools to build physical and mental toughness over 75 days. Track water intake, training, weight, and progress photos. Connect with a supportive community on a similar journey.

Highlights
  • Water intake tracking
  • Training progress tracking
  • Weight progress tracking
  • Progress picture tracking
  • Community support
  • Mental toughness tools
Features
Read full description

Welcome to the 75 Days Challenge app. In our app, you are going to find all tools that will help you create the highest level of physical toughness and mental toughness possible. You are gonna find the tools that gonna help you track your hard water intake, track your training, track your weight progress, that will help you track your hard progress pictures. They gonna help you track everything that you need to become hard successful in this challenge. You are going to find a community of people who are the same as you, who are working hard to become the best version of them selfs. Welcome to the 75 Days Challenge, welcome to the journey of building your dream physical and mental lifestyle SUBSCRIPTION PRICING & TERMS 75 Days Challenge is free to download. Ongoing use requires an active subscription, available on a monthly or yearly basis. New customers who choose a monthly subscription are eligible for a free trial period. Weekly subscription users are billed per week. All payments made through iTunes are controlled and managed by Apple. Payments will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews, unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. You may manage your subscriptions and auto-renewal may be turned off by going to your iTunes account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited if you purchase a subscription to the publication, where applicable. By continuing you accept our Privacy Policy and Terms of Use Subscriptions can be managed and auto-renewal turned off in Account Settings in iTunes after purchase. Once purchased, refunds will not be provided for any unused portion of the term. Read our full Terms of Use & Privacy Policy. Terms of use: https://sites.google.com/view/soloweigroup-terms-of-usee/home Privacy Policy: https://sites.google.com/view/soloweigroup-privacy-policy/

About

FlexChallenge

Read full description

Most goals don't fail from lack of motivation. They fail because there's no structure. FlexChallenge gives any goal a start date, an end date, and a daily checklist — then holds you to it. Create a custom challenge for anything: fitness, reading, meditation, learning a skill, breaking a bad habit, or a structured program like 75 Hard. Pick your duration, pick your daily tasks, and show up. YOUR CHALLENGE, YOUR RULES • Any goal, any habit — you define what counts • 7 to 365 days, you set the finish line • Strict mode (miss a day, start over) or flexible mode — your call • Run multiple challenges at once TASK TYPES THAT FIT REAL LIFE • Checkboxes for simple daily habits • Counters for quantities — pages read, reps done, minutes practiced • Timed tasks for focused sessions • Water tracking with one-tap quick add • Automatic step counting via Apple Health SEE YOUR PROGRESS EVERYWHERE • Visual calendar that shows your streak at a glance • Home screen widgets so your challenge stays in front of you • Stats and charts that prove you're changing • Progress photos and voice notes to document the journey • Daily reminders so no day slips by FLEXCHALLENGE PRO Start with a 14-day free trial. Then $24.99/year or $3.99/month, billed through the App Store. Cancel anytime. Terms of Use: https://flexchallenge.app/terms Privacy Policy: https://flexchallenge.app/privacy PRIVATE BY DESIGN No account. No feed. No social pressure. Everything stays on your device — it's just you and your goals. Whether you're building a morning routine, training for something big, or finally finishing what you start: the challenge starts the day you create it. Start today. Stay consistent. Become who you want to be.

Screenshots

75 Tough & Soft Challenge4 screens
FlexChallenge4 screens

Verdict

The call

The clearest difference is update cadence: FlexChallenge at every 6 days against 75 Tough & Soft Challenge's every 3 weeks. 75 Tough & Soft Challenge's advantage is iOS requirement (14.0 vs 17.6). On price, ads, 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. 75 Tough & Soft Challenge sells 7 in-app purchases, starting at $1.99 per 7 days and FlexChallenge sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

75 Tough & Soft Challenge ships an update every 3 weeks, FlexChallenge every 6 days. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
75 Tough & Soft Challenge versus FlexChallenge: the parameters behind the verdict, then further details
Parameter75 Tough & Soft ChallengeFlexChallenge
PriceFreeFree
Rating4.2 (3.7K ratings) — better—
Positive reviews3.1% of reviews—
Number of ratings3.7K — better—
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better17.6
Further details — not scored
Size100 MB17 MB
Age rating4+4+
DeveloperSolowei Group LTDLocal Wave Studios LLC

Bugs and requests

75 Tough & Soft Challenge

Reported bugs

3 issues
  • App gets stuck on certain days
  • Progress data randomly deleted or reset
  • Inability to move to next day after completing tasks

Requested features

3 requests
  • Option to track water in imperial units
  • Ability to manually update weight instead of scrolling
  • Settings to adjust app behavior

FlexChallenge

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

75 Tough & Soft Challenge

Subscriptions4
  • Weekly Subscription2 variants$1.997 Days
  • Weekly Subscription$3.997 Days
  • Yearly Subscription$4.991 Year
Show 1 more
  • Monthly Subscription$5.991 Month
One-time3
  • One-Time Payment$2.99
  • One-Time Payment$5.99
  • One-Time Payment$6.99
2 purchases

FlexChallenge

Subscriptions2
  • FlexChallenge Pro Monthly14 Days trial$3.991 Month
  • FlexChallenge Pro Yearly14 Days trial$24.991 Year

Questions

Is 75 Tough & Soft Challenge free?
75 Tough & Soft Challenge is free to download, with in-app purchases available.
Is FlexChallenge free?
FlexChallenge is free to download, with in-app purchases available.
Do 75 Tough & Soft Challenge or FlexChallenge have ads?
Neither 75 Tough & Soft Challenge nor FlexChallenge shows ads.
Which is updated more often, 75 Tough & Soft Challenge or FlexChallenge?
75 Tough & Soft Challenge ships an update every 3 weeks, and FlexChallenge every 6 days. Most recently, 75 Tough & Soft Challenge was updated on November 7, 2026 and FlexChallenge on October 28, 2026.

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