Comparison

Darwin vs Fitward

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

Head to head
About

Darwin

This app creates personalized weekly training plans for endurance athletes, adapting to your actual performance, sleep, and well-being. It rebuilds your schedule each week, offering clear explanations for adjustments and incorporating race-specific training and fueling targets.

Highlights
  • Weekly plan rebuilding
  • Adaptive volume and intensity
  • Race-specific session shaping
  • Carbohydrate fueling targets
  • Readiness tracking from health data
  • Plain-language explanations
Features
Read full description

Every training plan you have downloaded assumed a perfect week. Darwin does not. You have three sports, a job, and a race on the calendar. Then you get sick, or a meeting eats Wednesday, or you sleep five hours three nights running. A PDF plan cannot see any of that. It just keeps counting down, and you fall behind a schedule that was never built for the week you actually had. Darwin rebuilds your plan every week around what actually happened. HOW IT WORKS Tell Darwin your race, your date, and the days you can train. It builds a full week-by-week plan to race day. At the end of each week it asks what you completed, how you slept, how you felt, and whether you fueled your long sessions. Then it rebuilds the weeks ahead. Nail the week and it progresses you. Miss sessions or sleep badly and it pulls volume back and drops intensity, rather than pretending the week went fine. Every change comes with a plain-language explanation of what moved and why. A DETERMINISTIC ENGINE, NOT A CHATBOT This is worth being precise about. Darwin never asks a language model how hard you should train. Every load decision comes from a deterministic engine with hard limits written into it: Volume never ramps more than 10 percent week over week Every fourth week is a recovery week at 65 percent load A bad week can cut your load, but never below 60 percent of what was planned A real taper into race day, sized to your event Language models do exactly one job here: turn the engine's decisions into a paragraph you can read. They never make them. BUILT FOR YOUR RACE Ironman, 70.3, Olympic, sprint, marathon, half marathon. Darwin also shapes sessions around the course you are actually racing: climbing work for a hilly bike leg, heat-adapted sessions for a hot race, open-water skills if you are not racing in a pool. FUELING ON THE SESSIONS THAT NEED IT Every long session carries a carbohydrate target in grams per hour. Every day is tagged low, medium or high carb based on the training load you are actually doing that day. No second app for nutrition. READINESS FROM REAL DATA With your permission, Darwin reads sleep, resting heart rate, heart rate variability and completed workouts from Apple Health, and factors them into the weekly rebuild. Your health data stays on your phone. WHY I BUILT IT I am a dad and a lawyer, and Eagleman 70.3 was my first one. I went in less fit than I wanted to be and, worse, with my nutrition guessed rather than planned. My stomach turned on me early and the half marathon became a walk between portable toilets. I promised myself never again. Every app I tried wanted me to build my life around a training schedule, and none of them took fueling seriously. So I built the one that does both. Six weeks after I started, I raced a second 70.3 in Maine and took nearly 40 minutes off my time. WHAT YOU GET A full plan to race day, rebuilt every week Carb targets on every long session Readiness from your sleep, HRV and resting heart rate Plain-language answers on why the plan changed Notes on any day, which the next rebuild takes into account Over 60 races to browse and search Your plan synced to your account, so a lost phone does not cost you your training Darwin is free for 7 days. After that it is a subscription, and you can cancel any time in your Apple ID settings. SUBSCRIPTION DETAILS Darwin Pro is 9.99 USD per month or 79.99 USD per year, after a 7-day free trial. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple ID account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms: https://darwinendurance.com/terms Privacy: https://darwinendurance.com/privacy

About

Fitward

Features
Read full description

Fitward is a private, offline journal for recording your weight and GLP-1 injection history. Your journal stays in protected storage on your iPhone. There is no Fitward account, health-data server, advertising, analytics, or tracking. RECORD YOUR JOURNEY - Log weight in kilograms or pounds. - Record injection dates, medicine labels, and doses. - Edit or delete entries whenever you need to. - Review your history and see progress over time. - Set a private weight goal for visualization. PRIVATE BY DESIGN - Journal data stays on your device and is excluded from device and iCloud backups. - Optional app lock uses Face ID, Touch ID, or your device passcode. - Local reminders contain no medicine, dose, or weight details. - Delete All Data removes your journal, settings, goals, and reminders. SEVEN DAYS OF FREE ACCESS Your seven days of free access begin after onboarding. No payment is taken and no subscription starts automatically. When free access ends, you can actively choose either a weekly auto-renewing subscription or a one-time lifetime purchase. Both options unlock the same journal features, and prices are shown before purchase. The free-access period is stored only on this device. Deleting and reinstalling Fitward may reset it, but doing so also deletes the journal because Fitward has no backup or sync service. IMPORTANT Fitward records information you enter. It does not diagnose, treat, recommend a medicine, calculate a dose, or advise when medicine should be taken. Always follow your prescriber or pharmacist. Medicine and brand names are user-selectable journal labels, belong to their respective owners, and do not imply affiliation or endorsement. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.fitwardapp.com/privacy Support: https://www.fitwardapp.com/support

Screenshots

Darwin4 screens
Fitward4 screens

Verdict

The call

Darwin and Fitward are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Darwin sells 2 in-app purchases, starting at $9.99 per month and Fitward sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Darwin versus Fitward: the parameters behind the verdict, then further details
ParameterDarwinFitward
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size55 MB3 MB
Age rating4+17+
DeveloperDarwin Endurance LLCEngin Horzum

In-app purchases

2 purchases

Darwin

Subscriptions2
  • Darwin7 Days trial$9.991 Month
  • Darwin7 Days trial$79.991 Year
2 purchases

Fitward

Subscriptions1
  • Fitward Premium Weekly$1.997 Days
One-time1
  • Fitward Lifetime$29.99

Questions

Is Darwin free?
Darwin is free to download, with in-app purchases available.
Is Fitward free?
Fitward is free to download, with in-app purchases available.
Do Darwin or Fitward have ads?
Neither Darwin nor Fitward shows ads.

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