Comparison

Forge vs Duo

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

Head to head
About

Forge

This app provides a structured system to help users complete challenging habit-building programs like 75 Hard, 75 Soft, and custom durations. It offers daily task tracking, visual progress monitoring, community support, and built-in tools to maintain motivation and discipline.

Highlights
  • Daily task checklist
  • Visual grid tracker
  • Progress photos
  • Water tracker
  • Built-in timers
  • Community chat
  • Customizable challenges
Features
Read full description

Most people who start 75 Hard never finish. Forge is built to make sure you do. Whether you are on Day 1, restarting after a reset, or building your own custom challenge - Forge gives you the daily structure, accountability, and community to get to Day 75. Download free. Start today. BUILT FOR 75 HARD, SOFT, MEDIUM AND CUSTOM 75 Hard - two daily workouts, strict diet, gallon of water, 10 pages, progress photo. Zero exceptions. 75 Soft - one workout daily, balanced diet, 3 liters of water, 10 pages of reading. Sustainable habits. 75 Medium - the perfect bridge between Soft and Hard. Build your foundation first. Custom - your rules, your tasks, your duration. 30, 60, or 90 days. EVERYTHING YOU NEED TO FINISH Daily task checklist - check off every task and feel the momentum build Visual grid tracker - see your full 75-day journey at a glance Progress photos - document your transformation from Day 1 to Day 75 Water tracker - hit your daily gallon goal without thinking about it Built-in timers - for workouts, reading, and meditation Smart reminders - so you never forget a task before midnight Streak tracker - protect your streak and never restart over something avoidable THE COMMUNITY THAT KEEPS YOU GOING On the hard days - and there will be hard days - the community is everything. Forge connects you with challengers doing the exact same thing you are. Community chat - share wins, get support, stay motivated daily Group challenges - find your accountability partner and go further together Real people, real results WHAT PEOPLE ARE SAYING "The best way to track 75 Hard. Everything I need in one place." "The grid tracker alone is worth downloading this app." "The community pushed me through days I wanted to quit." "Restarted 3 times before. This app got me to the finish line." "Day 75. Done. Forge made it possible." WHY FORGE WORKS Discipline is not motivation. It is a system. Forge gives you the system - daily structure, visual progress, smart reminders, and a real community - so on Day 47 when everything in you wants to quit, you open the app, check the box, and keep going. Champions are made on the days you do not feel like showing up. COMMON QUESTIONS Is Forge the official 75 Hard app? No - Forge is an independent app built by a developer who completed the challenge. Not affiliated with Andy Frisella or 1st Phorm, but fully supports all official rules. Do I restart if I miss a day? Yes. Forge tracks your streak and logs every reset. Many users restart 2-3 times before finishing. Can I use Forge for other challenges? Absolutely. 30, 60, or 90 days - any tasks, any rules. Is the community moderated? Yes. Actively monitored to stay positive and focused. Zero crashes. Zero excuses. Your challenge starts now. Privacy Policy: https://www.75forge.com/privacy-policy Terms of Service: https://www.75forge.com/terms-of-service

About

Duo

Features
Read full description

75 days. Stronger together. Duo is a free challenge tracker for you and your partner. Agree on your rules, check off today’s tasks and see how far the other has got. No subscription, no paywall after setup. TOGETHER OR ON YOUR OWN Start a personal challenge or invite a partner through iCloud. See each other’s check-ins and progress. Share an invitation through WhatsApp, Messages or email. Once your partner accepts your shared plan, the challenge starts for both of you on the same day. TASKS THAT MATCH YOUR PLANS Choose the length and tasks, so a softer version works too. Check off a habit, track an amount or add a personal progress photo. The 75 Hard template includes tasks for two workouts, water, reading, diet and a photo. You confirm workouts yourself; Duo does not record them. SEE YOUR PROGRESS Review your days, tasks and streak, and look back on past challenges. Home Screen and Lock Screen widgets show where you both stand, and the Water widget logs 0.25 L with one tap. Send your partner encouragement or an invitation to walk. NOTIFICATIONS YOU CONTROL Enable reminders and partner notifications and choose your quiet hours. Partner notifications appear after changes arrive through iCloud; timing depends on iOS and your connection. PRIVACY No separate Duo account is needed. Shared challenges and sync require an Apple account with iCloud. You share challenge rules and progress with your partner. Your progress photo stays within the app on your device; your partner only sees whether the photo task is complete. Duo has no ads. Anonymous usage statistics and technical error reports help improve the app. You can turn this off in Settings. APPLE HEALTH Optionally let Duo read your steps from Apple Health after granting permission. Duo does not write data to Health. Available in English, Dutch, German, French, Spanish, Italian, Portuguese, Japanese, Korean and Chinese. Duo is an independent app and is not affiliated with the creators of 75 Hard.

Screenshots

Forge4 screens
Duo4 screens

Verdict

The call

The clearest difference is in-app purchases: Duo at none against Forge's 7. Duo also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement 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. Forge sells 7 in-app purchases, starting at $4.99 per month. Duo asks for nothing beyond the download.

UpkeepUpdate frequency

Forge ships an update fortnightly, Duo every 2 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 8 level
Forge versus Duo: the parameters behind the verdict, then further details
ParameterForgeDuo
PriceFreeFree
Rating4.8 (25 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings25 — better—
Update frequencyFortnightlyEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better18.0
Further details — not scored
Size48 MB13 MB
Age rating4+12+
DeveloperRogelio LopezRuud Slagers

In-app purchases

7 purchases

Forge

Subscriptions7
  • 75 Forge Premium Monthly$4.991 Month
  • 75 Forge Premium Weekly$7.997 Days
  • 75 Hard Premium Monthly$12.991 Month
Show 4 more
  • 75 Forge Special Offer$12.991 Year
  • Forge Discount Offer$19.991 Year
  • 75 Hard Premium Yearly$19.991 Year
  • 75 Hard Premium Annual$39.991 Year
None

Duo

No in-app purchases

Questions

Is Forge free?
Forge is free to download, with in-app purchases available.
Is Duo free?
Duo is free to download, with no in-app purchases.
Do Forge or Duo have ads?
Neither Forge nor Duo shows ads.
Which is updated more often, Forge or Duo?
Forge ships an update fortnightly, and Duo every 2 days. Most recently, Forge was updated on November 8, 2026 and Duo on November 6, 2026.

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