Comparison

5K Run vs Simby

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

Head to head
About

5K Run

This app guides beginners from inactivity to running a 5K with a flexible, adaptive training plan. It offers audio cues during runs and integrates with HealthKit to track progress and Apple Watch activity.

Highlights
  • Adaptive 5K training plan
  • Voice trainer for run/walk intervals
  • Flexible workout scheduling
  • HealthKit integration
  • Motivation and progress tracking
Features
Read full description

5K RUN is the easiest way to get you from couch potato to 5k. Our training plan will help you keep motivated and give your best in every workout. Don't give up, you can do it! 5K PLAN The training plan is design to help you keep motivated. It will let you know when you need to take a break and when it's time for another run. Run whenever you want, you don't need to set up a schedule of specific days for running, we all have busy days, or it's raining outside, or we're just tired. That's why our training plan adapts to you, giving you a time window to complete your workouts. Take your training to the next level! VOICE TRAINER During the runs, listen to your music and the voice trainier will tell you when it's time for you to run or walk. Set your goal and work to get there in a healthy way. HEALTHKIT INTEGRATION Run 5K integrates nicely with HealthKit, meaning that all your workout data will be available for you inside Run 5K and the Apple Health App. On top of that, all the races you save using Run 5K will contribute to filling the Activity rings on your Apple Watch. Isn't that cool?

About

Simby

Features
Read full description

Simby is the calm, all-in-one tracker for your baby's first years — feeding, diapers, sleep, growth and health, beautifully organized and always a tap away. Whether it's a 3 a.m. feed or a pediatrician visit, Simby helps you capture what matters and see the patterns behind it. FEEDING • Breastfeeding with left/right timers • Bottles and solids • Pumping sessions and a milk stash tracker DAILY CARE • Diapers, sleep and water intake • Walks, play, tummy time, bath and teeth brushing GROWTH & HEALTH • Weight, height and temperature with clear charts • Symptoms, medications and doctor visits • Vaccination schedule tailored to your country (US, Canada, Europe and more) with reminders MILESTONES & MEMORIES • Track first smiles, steps and words on a beautiful timeline • Save photos and special moments GUIDANCE WHEN YOU NEED IT • AI-powered specialists for sleep, feeding, health, development and parenting • Fast, personalized answers to everyday questions (AI guidance is informational and does not replace your pediatrician) CALM YOUR BABY • Built-in soothing sounds and lullabies for easier sleep MADE FOR FAMILIES • Share your baby's profile with your partner in real time • Export data as PDF/CSV for your pediatrician • Available in 6 languages • Private by design — your family's data stays yours SIMBY PRO Unlock unlimited AI specialists, full history, data export, memories and sharing. • Monthly or annual subscription; auto-renews unless cancelled 24h before the period ends — manage anytime in Settings Simby is an informational and organizational tool. It is not a medical device and does not provide medical advice, diagnosis or treatment. Always consult a qualified pediatrician for medical concerns. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://legal.simbyapp.com/

Screenshots

5K Run4 screens
Simby4 screens

Verdict

The call

The clearest difference is iOS requirement: Simby at 15.1 against 5K Run's 17.0. On price, update cadence, 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. 5K Run sells 1 one-off in-app purchase and Simby sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

5K Run ships an update every 10 days, Simby every 3 weeks. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

Scorecard1 real difference · 9 level
5K Run versus Simby: the parameters behind the verdict, then further details
Parameter5K RunSimby
PriceFreeFree
Rating4.6 (2.2K ratings) — better—
Positive reviews24.3% of reviews—
Number of ratings2.2K — better—
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size25 MB68 MB
Age rating4+12+
DeveloperCarlos Fernandez MayorVESELA NIKOLAEVA MARINOVA

Bugs and requests

5K Run

Reported bugs

3 issues
  • App crashes and loses user progress
  • Inconsistent tracking of distance and pace
  • Issues with treadmill workouts

Requested features

4 requests
  • Ability to manually adjust training program
  • More detailed workout information
  • Integration with other fitness apps
  • Audio cues for run/walk transitions

Simby

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

5K Run

One-time1
  • Plan de entrenamiento 5K$4.99
2 purchases

Simby

Subscriptions2
  • Simby Premium Monthly$4.991 Month
  • Simby Premium Annual7 Days trial$39.991 Year

Questions

Is 5K Run free?
5K Run is free to download, with in-app purchases available.
Is Simby free?
Simby is free to download, with in-app purchases available.
Do 5K Run or Simby have ads?
Neither 5K Run nor Simby shows ads.
Which is updated more often, 5K Run or Simby?
5K Run ships an update every 10 days, and Simby every 3 weeks. Most recently, 5K Run was updated on October 9, 2026 and Simby on October 10, 2026.

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