Comparison

E vs ondo.

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

Head to head
About

E

Easily measure your foot size and find the perfect shoe size. Save measurements for yourself and loved ones, and share them to ensure accurate purchases or gifts.

Highlights
  • Measure foot size
  • Select shoe size
  • Save multiple measurements
  • Share measurements
  • Family and friend profiles
Features
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E-size helps you to measure your foot size and choose your shoe size. - Get your foot size and use it when choosing your shoes - Do measurements not only for yourself, but also for your family, or loved ones - Keep your E-size measurements and use them at any time - Share your size with your family and friends so they can be sure of choosing what to buy or present for you.

About

ondo.

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Ondo. is a minimalist habit tracker for iPhone. Build habits, stay fit, and let Apple Health auto-complete the rest. Free, easy to use, and no in-app purchases. The name comes from Japanese 音頭 (ondo) — "the beat that leads." A calm, private place for the things you actually want to repeat — workouts, water, weight, steps, reading, anything. No accounts. No sync. No ads. Your habits live on your iPhone and nowhere else. Link a habit to a workout type or a Health metric, and Ondo. checks the box for you. Run a 5K — your "Run twice a week" habit ticks. Apple Health logs your steps — your step goal updates. Lift weights — your strength habit counts the session. Ondo. only reads from Apple Health. It never writes back, and your data never leaves your iPhone. You stay in control: any auto-complete can be overridden manually, and you can edit past days at any time. — Three kinds of habits, easy to set up — • Binary — done or not done. Read tonight. Stretched today. Took the meds. • Counter — count toward a target. Three workouts this week. Eight glasses today. • Metric — read a value from Apple Health and check it against a goal. Hit 8,000 steps. Stay under 75 kg. Walk 30 minutes. Cadence is yours: daily, weekly with specific days, or weekly with a count (e.g. "three times a week, any days"). Easy to change as life changes. No streaks-as-pressure. No confetti. No badges. Two gentle daily reminders — your morning intent and your evening reflection — plus optional per-habit nudges. The interface is monochrome, calm, and built for reading at a glance. — Private. On-device only. — Ondo. has no servers. There is no sign-up, no login, no cloud account. The app does not know who installed it, when you opened it, or what you tracked. The App Store privacy label is "Data Not Collected," and that is the whole story. — Honest accountability — Completion percentage over fragile streaks. If you miss a day, you don't lose months of progress — you see exactly what happened and keep going. Weekly and monthly views make it easy to spot patterns without judgment. — What you get — • Today view — every habit you set, what's left, what's done • Week view — the current week at a glance, retroactively editable • Library — every habit you've defined, organized your way • Per-habit analytics — completion rate, last 365 days, weekly grids, daily averages for metrics • Apple Health auto-complete for steps, weight, workouts, distance, exercise minutes, and more • Optional reminders, scheduled by iOS, computed on your device

Screenshots

E4 screens
ondo.4 screens

Verdict

The call

The clearest difference is update cadence: ondo. at every 3 days against E's every 3 months. E's advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

E ships an update every 3 months, ondo. every 3 days. Both last shipped on October 2, 2026.

Scorecard2 real differences · 7 level
E versus ondo.: the parameters behind the verdict, then further details
ParameterEondo.
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better18.0
Further details — not scored
Size33 MB3 MB
Age rating4+4+
DeveloperAIVA LLCTrinx Solutions

In-app purchases

None

E

No in-app purchases

None

ondo.

No in-app purchases

Questions

Is E free?
E is free to download, with no in-app purchases.
Is ondo. free?
ondo. is free to download, with no in-app purchases.
Do E or ondo. have ads?
Neither E nor ondo. shows ads.
Which is updated more often, E or ondo.?
E ships an update every 3 months, and ondo. every 3 days. Most recently, E was updated on October 2, 2026 and ondo. on October 2, 2026.

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