Comparison

Wellmetry vs One

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

Head to head
About

Wellmetry

This app helps users track intermittent fasting with various protocols, visualize progress, and monitor weight and glucose levels. It offers smart reminders, achievements, and integrates with HealthKit for seamless data sync. Designed for health improvement and lifestyle changes.

Highlights
  • Multiple fasting protocols (16:8, 18:6, 20:4, OMAD, Custom)
  • Real-time fasting timer and progress visualization
  • Weight, BMI, and body measurement tracking
  • Blood glucose monitoring
  • HealthKit integration
  • Achievements and streak tracking
  • Customizable notifications
Features
Read full description

Intermittent fasting made simple. Track every fast with a live timer, log your weight in seconds, and watch your progress add up day by day. Wellmetry brings fasting, weight, water and daily habits together in one clean app, so you always know where you stand and what to do next. FAST WITH CONFIDENCE - Start and end a fast with one tap - Choose 16:8, 18:6, 20:4, OMAD or a custom plan - Live timer with elapsed time, end time and progress - Follow the fasting stages as your fast goes on - Edit start and end times anytime - Log anything you eat or drink during a fast TRACK YOUR WEIGHT - Log your weight in seconds - Set a goal weight and see how far you have to go - Weekly, monthly and all-time charts - Full history of every entry SEE YOUR PROGRESS - Streaks, total fasting hours and average fast length - Weekly chart showing which days you reached your goal - Weight and fasting trends over 7, 30 and 90 days BUILD DAILY HABITS - A simple daily plan with small, achievable goals - Quick-log water, steps and weight from the home screen - Reminders when your fast starts, hits halfway and ends - Optional water and weekly progress reminders BLOOD SUGAR LOG - Record your glucose readings alongside your fasts - See your readings over time WELLMETRY PREMIUM Wellmetry is free to download. Wellmetry Premium unlocks [LIST PREMIUM FEATURES] with a monthly or yearly subscription. Prices are shown in the app and may vary by country. - Payment is charged to your Apple ID account at confirmation of purchase. - Your subscription renews automatically unless cancelled at least 24 hours before the end of the current period. - Your account is charged for renewal within 24 hours before the end of the current period. - You can manage or cancel your subscription anytime in your App Store account settings. - Any unused portion of a free trial is forfeited when you purchase a subscription. HEALTH NOTICE Wellmetry is for general wellness and information only. It does not provide medical advice, diagnosis or treatment. Talk to your doctor before starting a fasting plan, especially if you are pregnant or breastfeeding, have diabetes, take medication, or have a history of eating disorders. Privacy Policy: https://sites.google.com/view/fasting-track/privacy-policy Terms of Use: https://sites.google.com/view/fasting-track/term-of-use Start your first fast today.

About

One

A simple food diary that lets you log meals without calorie counting or strict rules. Focuses on gentle habit building and provides summaries of your eating patterns over time. Recording is free and optional, with gentle reminders to help you stay on track.

Highlights
  • Log meals without calorie counting
  • No complex analysis or strict rules
  • Gentle habit building
  • Optional daily entries
  • Summaries and trend reports
  • PDF export
Features
Read full description

One-Line Diet Memo is a lightweight food diary where you can record what you ate without counting calories, no complex analysis, and no strict rules. Most meal apps ask you to track every number. Many users start strong, but the pressure to follow a rigid workflow often makes that routine hard to sustain. This app is different. You can record a line whenever you remember what you ate. There is no penalty for an imperfect habit. No grade, no judgment, no obligation to fill every field. How to use Open the app and type immediately. You can split records by breakfast/lunch/dinner, or write one simple line. The format is optional, not mandatory. Entries stack gently over time. Days with no input stay blank, and that’s okay. This is a timeline of your habits—not a scorecard. When writing feels heavy, a shorter note is still meaningful. Even one emoji can be enough to mark the day’s meal. Notifications are gentle. They only appear at the times you choose and only on days without entries. A message is a nudge, never an order. As your entries grow, you can review them later with summaries and trend reports. You can see recurring meals and weekly patterns at a glance. A preview is free, while PDF export is available when you need a shareable copy. In short: recording stays free, and use is entirely optional. One-Line Diet Memo keeps your time for you. It doesn’t change your behavior. It only stores your moments, quietly.

Screenshots

Wellmetry4 screens
One4 screens

Verdict

The call

The clearest difference is in-app purchases: One at none against Wellmetry's 2. One also leads on update cadence (weekly vs every 2 months) and iOS requirement (13.0 vs 17.0). Wellmetry's advantage is ratings volume (4 vs 1). On price, rating, ads and device support 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. Wellmetry sells 2 in-app purchases, starting at $2.99 per month. One asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Wellmetry against 5.0 for One. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Wellmetry ships an update every 2 months, One weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Wellmetry versus One: the parameters behind the verdict, then further details
ParameterWellmetryOne
PriceFreeFree
Rating5.0 (4 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.013.0 — better
Further details — not scored
Size10 MB71 MB
Age rating17+4+
DeveloperMd Golam Saroar Shuvohyeonsik choi

Customer experience

Wellmetry

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

One

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

In-app purchases

2 purchases

Wellmetry

Subscriptions2
  • Monthly Premium$2.991 Month
  • Yearly Premium$14.991 Year
None

One

No in-app purchases

Questions

Is Wellmetry free?
Wellmetry is free to download, with in-app purchases available.
Is One free?
One is free to download, with no in-app purchases.
Which has better reviews, Wellmetry or One?
Wellmetry and One are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.
Do Wellmetry or One have ads?
Neither Wellmetry nor One shows ads.
Which is updated more often, Wellmetry or One?
Wellmetry ships an update every 2 months, and One weekly. Most recently, Wellmetry was updated on November 5, 2026 and One on October 31, 2026.

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