Comparison

AlterMe vs RunWindow

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

Head to head
About

AlterMe

This app creates personalized fitness and nutrition plans based on your DNA, biometric data, and health goals. It offers tailored workouts, recovery content, and actionable insights to help you understand and work with your body.

Highlights
  • Personalized fitness program
  • Evolving workout library
  • Recovery content (breathwork, meditation)
  • DNA-based nutrition plan
  • Actionable health insights
  • Integration with AlterMe Ring
Read full description

Your body is always talking. AlterMe helps you listen and take action. The AlterMe app brings together your DNA results, real-time biometric data from the AlterMe Ring, and your health goals to create a personalized plan that adapts to your body each day. It helps you work with your body, not against it. Whether your goal is fat loss, better sleep, more energy, or lasting consistency, AlterMe gives you one simple place to stay on track and keep moving forward. Inside the app, you’ll get: Personalized fitness program This isn’t a one-size-fits-all approach. Your program is built using your DNA, goals, and real-time progress, so every workout is tailored to your body. As you improve, your plan adjusts to keep you challenged, motivated, and progressing. An evolving library of workouts built for your body Get new workouts that align with your readiness and recovery — including strength, cardio, mobility, and combat-style training. Every session is paired with curated music to keep you focused and moving. Recovery content that supports body and mind Access guided breathwork, stretching, meditation, and yoga sessions. The recovery library is refreshed regularly, so there's always something to help you reset and recharge. Seamless integration with the AlterMe Ring Track your heart rate, HRV, sleep, activity, recovery, and more — all in one place, all day and night. DNA-based nutrition plan Learn exactly how much protein, fat, and carbs your body needs based on your DNA and goals. Get a clear calorie target and science-backed recommendations to fuel real results. Actionable insights that help you understand your body See how your sleep, stress, movement, and recovery shift over time. Track daily, weekly, and monthly trends to spot patterns, make informed choices, and stay aligned with your body's needs. ABOUT HEALTH DATA: Alter accesses the Health app to write workout data and read bodyweight data with your permission. All data is accessed in full accordance with the iOS app review rules set by Apple. Please read our privacy policy at https://www.alterme.com/legal/privacy-policy for more information.

About

RunWindow

This app guides your runs using haptic feedback and on-screen cues to keep you within your target heart rate or pace zones. It focuses on training by feel, minimizing the need to constantly check your watch. View run trends and summaries post-workout.

Highlights
  • Haptic feedback for pace and heart rate zones
  • On-screen color cues for effort level
  • Adjustable pace or heart rate windows
  • Run trend and summary data
  • Apple Health integration
  • No account or phone app required
Features
Read full description

RunWindow taps you on the wrist when you drift outside the window you set, so you can run by feel without looking at your watch. Pick a target: a heart-rate range or a pace range. Then press Start, on your watch or your iPhone, and drop your arm. THREE CUES, NOTHING ELSE • Fast taps, nonstop: speed up • Slow taps, nonstop: ease off • One tap: you're back in range The cue tells you what to do, never which number moved, and it keeps going until you're back in your window. Hold a steady effort right on the edge and RunWindow stays silent. It waits for a real drift, not a wobble. ON YOUR IPHONE • Start on Apple Watch: one tap opens RunWindow on your wrist and starts the run • Tune your window on a drag-to-set track, lit green inside, warm above, cool below • Or set just a Max or a Min: one marker, cues on one side only • Quick heart-rate zones from your age, and your own saved windows • Every run in one place: time in window, the run drawn against your window, heart-rate zones, distance, pace and active calories. Delete any run you didn't mean to record • Settings sync both ways with your watch ON YOUR WATCH • Color Field turns the whole screen into the signal: green in range, warming toward red when you push too hard, cooling toward deep blue when you're too easy, with the word on screen so colour is never the only cue. Swipe up or down for a tick ring or a tuner. • Pause, resume, or change your window mid-run • Trend and Summary pages after every run • A one-minute demo shows every cue without running BUILT FOR TRAINING, NOT TRACKING • Heart rate streams live from the watch during the workout • Pace comes from GPS, smoothed so a single bad fix can't buzz you • Miles or kilometres • Every run is saved to Apple Health as a workout • No account, and no data leaves your devices RunWindow requires an Apple Watch: the cues are taps on your wrist. The watch needs Health access for heart rate and Location access for pace; the iPhone app reads your runs from Apple Health to show your history.

Screenshots

AlterMe4 screens
RunWindow4 screens

Verdict

The call

The clearest difference is ratings volume: AlterMe at 1.6K against RunWindow's 1. RunWindow's advantage is rating (5.0 vs 4.7). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RunWindow holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: AlterMe has 1.6K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

AlterMe ships an update every 4 days, RunWindow every 3 days. The most recent releases landed on November 14, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
AlterMe versus RunWindow: the parameters behind the verdict, then further details
ParameterAlterMeRunWindow
PriceFreeFree
Rating4.7 (1.6K ratings)5.0 (1 ratings) — better
Positive reviews64.3% of reviews—
Number of ratings1.6K — better1
Update frequencyEvery 4 daysEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size175 MB4 MB
Age rating12+4+
DeveloperFit WindDavid Fields

Customer experience

AlterMe

All ratings1,552 ratings
Positive94.3%
Neutral3.2%
Negative2.5%
Written reviews98 reviews
Positive64.3%
Neutral9.2%
Negative26.5%

RunWindow

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

AlterMe

Reported bugs

4 issues
  • Wearable disconnecting from app
  • Mirror showing as disconnected
  • Inconsistent data between app and wearable
  • Workouts and demos disappearing from app

Requested features

7 requests
  • Ability to cast workouts to TV
  • More detailed health and sleep tracking
  • Customizable calorie and macro goals
  • Integration with popular fitness apps
  • More flexibility in food logging
Show 2 more
  • Improved wearable design and comfort
  • Better explanation of workout zones and progression

RunWindow

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

AlterMe

No in-app purchases

None

RunWindow

No in-app purchases

Questions

Is AlterMe free?
AlterMe is free to download, with no in-app purchases.
Is RunWindow free?
RunWindow is free to download, with no in-app purchases.
Which has better reviews, AlterMe or RunWindow?
RunWindow is rated higher. AlterMe averages 4.7 out of 5 from 1.6K ratings, while RunWindow averages 5.0 from 1 ratings.
Do AlterMe or RunWindow have ads?
Neither AlterMe nor RunWindow shows ads.
Which is updated more often, AlterMe or RunWindow?
AlterMe ships an update every 4 days, and RunWindow every 3 days. Most recently, AlterMe was updated on November 14, 2026 and RunWindow on October 31, 2026.

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