Comparison

Premmie Marathon Challenge vs Biohack

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

Head to head
About

Premmie Marathon Challenge

Participate in a virtual running, swimming, cycling, or walking challenge to raise funds for premature babies. Track your progress and compete on leaderboards by syncing with your Health app.

Highlights
  • Virtual running, swimming, cycling, and walking challenges
  • Multiple distance options (21km to 300km)
  • Syncs with Health app (HealthKit)
  • Leaderboard for competition
  • Fundraising for premature babies
Features
Read full description

Walk or run 71k this November for the 71 babies born prematurely in Australia each day. (Sync your account with the Health app (HealthKit) to read and track your workout data and calculate your leaderboard score)

About

Biohack

Features
Read full description

Biohack Tracker is a private log for the protocols, supplements and medications you already use. Set reminders on the days you choose, tick each one off in a tap, and keep a site-rotation log for prescribed injectables. Import your blood tests to see every marker against its reference range over time, and sync sleep, HRV, resting heart rate and workouts from Apple Health. Biohack Tracker is a tracking and education tool. It is not a medical device and does not sell, source, recommend or dose any substance. WHAT YOU CAN DO โ€ข Today: what's due, what's done and your Biohack score at a glance, with one-tap "Mark taken". โ€ข Protocol log: log protocols, supplements and medications by route with colour-coded icons, set reminders on the days you choose and see your adherence. โ€ข Site rotation: numbered body sites with rest rings that show how recently each was used, plus a general rotation guide to use alongside your prescriber's or pharmacist's instructions. โ€ข Blood tests: import a PDF or photo. Each marker is shown against its reference range and trended, with "worth discussing with your GP" patterns and retest reminders. โ€ข Sleep, recovery and training: sleep stages, HRV, resting heart rate, breathing rate, blood oxygen and temperature from Apple Watch, Oura, Whoop, Garmin and more, plus workouts (including sessions synced from Strava or Runna) and your Runna plan. โ€ข Scores: a Vitality score from your labs and a Wellbeing score from your last 7 days combine into one Biohack score, with ways to improve. A guide to your own trends, not a medical assessment. โ€ข Templates and library: educational routine templates (no doses) and a reference library of 215 supplements and compounds with evidence levels, safety flags and legal status. โ€ข Biohack coach (Pro): ask about your own data. The coach can build a simple 4-week habit plan from a result, show the before and after when you retest, answer questions about a photo of a meal or label, and remembers what you tell it (see or clear it any time). General guidance only, never dosing or diagnosis. AI features run only after you allow them. โ€ข Clinician-ready reports, progress photos and metabolic health. PRIVACY Your data is stored in your private account and encrypted in transit and at rest. We never sell your data or use it for advertising, and your health data is never used to train AI models. Apple Health data is read-only. Download all your data or delete your account at any time. LIFETIME UNLOCK & PRO Free to download. A single one-time purchase (A$4.99, no subscription) unlocks all tracking: protocols and reminders, site rotation, sleep and recovery sync, templates, blood test import, charts, progress photos, metabolic health and retest reminders. Pro adds the AI layer and includes the unlock: the Biohack coach, 4-week plans, blood test and protocol analysis, trend projections, clinician-ready PDF export and the weekly digest. Pro is A$7.99/month or A$79.99/year. After the unlock you can ask the coach 5 questions and run 1 blood test analysis free. Fair-use limits apply to AI features. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the period ends; manage or cancel in your device Settings. IMPORTANT Biohack Tracker is for educational and organisational support only. It is not a medical device, does not diagnose, treat, cure or prevent any disease, does not prescribe or recommend doses, and is not a substitute for professional medical advice. Wearable readings are device estimates. Always check with your doctor before making health decisions. In a medical emergency, call your local emergency number. Terms: https://biohacktracker.ai/terms Privacy: https://biohacktracker.ai/privacy

Screenshots

Premmie Marathon Challenge4 screens
Biohack4 screens

Verdict

The call

The clearest difference is in-app purchases: Premmie Marathon Challenge at none against Biohack's 3. Biohack's advantage is update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Biohack sells 3 in-app purchases, starting at $4.99 per month. Premmie Marathon Challenge asks for nothing beyond the download.

UpkeepUpdate frequency

Premmie Marathon Challenge ships an update monthly, Biohack every 2 days. The most recent releases landed on November 14, 2026 and November 13, 2026 respectively.

Scorecard2 real differences ยท 6 level
Premmie Marathon Challenge versus Biohack: the parameters behind the verdict, then further details
ParameterPremmie Marathon ChallengeBiohack
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyMonthlyEvery 2 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
MonetizationAd-supportedโ€”
DevicesiPhone, iPod โ€” betteriPhone
Requires iOS15.1 โ€” better16.4
Further details โ€” not scored
Size52 MB61 MB
Age rating4+17+
DeveloperDistrict Technologies Pte LtdBROLY GROUP PTY LTD

In-app purchases

None

Premmie Marathon Challenge

No in-app purchases

3 purchases

Biohack

Subscriptions2
  • Pro Monthly$4.991 Month
  • Pro Annual$49.991 Year
One-time1
  • Lifetime unlock$2.99

Questions

Is Premmie Marathon Challenge free?
Premmie Marathon Challenge is free to download, with no in-app purchases.
Is Biohack free?
Biohack is free to download, with in-app purchases available.
Do Premmie Marathon Challenge or Biohack have ads?
Neither Premmie Marathon Challenge nor Biohack shows ads.
Which is updated more often, Premmie Marathon Challenge or Biohack?
Premmie Marathon Challenge ships an update monthly, and Biohack every 2 days. Most recently, Premmie Marathon Challenge was updated on November 14, 2026 and Biohack on November 13, 2026.

Other comparisons