Comparison

UltraVO2Max vs Swimlog

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

Head to head
About

UltraVO2Max

Features
Read full description

UltraVO2Max reads your VO₂ Max directly from Apple Health and displays your aerobic fitness level and monthly running distance in real time. Key Features: • Live VO₂ Max with fitness grade • Monthly running distance • Apple Watch swimming posture tracking & data logging • Outdoor activity recommendations based on weather & air quality • Apple Watch complications (circular, rectangular, corner) • Daily motivational quote • Traditional Chinese & English supported All data is processed on-device only. Nothing is ever sent to external servers.

About

Swimlog

This app helps competitive swimmers meticulously log their training sets, track season-long progress, and manage race performance. It allows for detailed capture of workouts, analysis of training volume and intensity, and team collaboration features. Built for serious swimmers, it supports various strokes and course types.

Highlights
  • Structured set logging with shorthand
  • Scan coach's whiteboard into editable sets
  • Import Apple Watch pool swims
  • Track training volume, intensity, and stroke mix
  • Manage upcoming meets and personal bests
  • Team log for shared training volume and collaboration
Features
Read full description

Every set. Every swim. One logbook. Swimlog is the training log for competitive, college, masters and committed swimmers. Capture practice in swimming shorthand, preserve the structure of every set, and see how your training builds over time. LOG YOUR WORKOUTS • Type structured sets in swimming shorthand • Scan the coach's whiteboard into editable sets • Build and edit complete workouts set by set • Import compatible Apple Watch pool swims through Apple Health • Manually import Garmin pool swims from FIT files Review your draft, correct it and log what you actually swam. Open a previous workout to edit it or reuse its sets for your next swim. KEEP YOUR HISTORY CLOSE Browse your swims in a clear native logbook. Search by title, stroke, note or date, then open a workout to see its complete sets, duration, effort and notes. SAVE YOUR FAVORITES Keep workouts you want to swim again in your own Favorites library. Save your own workout or star one shared by a teammate. Find it from Workouts, edit its title, course or sets, and use it for a future swim. SEE YOUR PROGRESS Explore training through charts for distance, swim days, recorded time, stroke mix, effort and equipment. Choose a week, month, three months or a year, browse earlier periods, and tap a chart to explore the details. Missing time and effort stay clearly marked. TRAIN WITH YOUR TEAM Create or join a team and follow your group's shared swims. Clear posts show the swimmer, workout details and sets. React, comment and reuse a teammate's workout for your own session. See upcoming practices and meets in the team schedule. Team owners can add practices, meets and other events, and attach a workout to a practice. Members can respond Going or Can't go and subscribe to the schedule in their calendar app. TAKE YOUR DATA WITH YOU Export workout summaries and detailed sets as CSV, or your complete training data as JSON, for spreadsheets and your own analysis. BUILT FOR SERIOUS SWIMMING • SCY, SCM and LCM courses • Freestyle, backstroke, breaststroke, butterfly, IM, kick, drill and pull • Send-offs, rest, effort, equipment, notes and repetition times • Local-first logging with cloud sync • Optional reminders • No ads Explore the preview before creating an account. Swimlog requires a Swimlog Pro monthly or yearly subscription after account setup. Eligible users may receive a 7-day free trial. Prices and eligibility are shown before purchase. Subscriptions renew automatically unless cancelled in App Store account settings. Terms of Use (EULA): https://swimlog.dev/terms Privacy Policy: https://swimlog.dev/privacy

Screenshots

UltraVO2Max4 screens
Swimlog4 screens

Verdict

The call

The clearest difference is price: Swimlog at Free against UltraVO2Max's $2.99. Swimlog also leads on iOS requirement (18.0 vs 26.5). UltraVO2Max's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On update cadence and ads 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

Swimlog is free to download; UltraVO2Max costs $2.99 up front. Swimlog sells 3 in-app purchases, starting at $9.99 per month. UltraVO2Max asks for nothing beyond the download.

UpkeepUpdate frequency

UltraVO2Max ships an update weekly, Swimlog every 5 days. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 5 level
UltraVO2Max versus Swimlog: the parameters behind the verdict, then further details
ParameterUltraVO2MaxSwimlog
Price$2.99Free — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS26.518.0 — better
Further details — not scored
Size12 MB100 MB
Age rating4+4+
DeveloperPai Chin ChuanEdward Baltaza

In-app purchases

None

UltraVO2Max

No in-app purchases

3 purchases

Swimlog

Subscriptions2
  • Swimlog Pro Monthly7 Days trial$9.991 Month
  • Swimlog Pro Yearly7 Days trial$79.991 Year
One-time1
  • Swimlog Pro Lifetime$169.99

Questions

Is UltraVO2Max free?
UltraVO2Max costs $2.99, with no in-app purchases.
Is Swimlog free?
Swimlog is free to download, with in-app purchases available.
Do UltraVO2Max or Swimlog have ads?
Neither UltraVO2Max nor Swimlog shows ads.
Which is updated more often, UltraVO2Max or Swimlog?
UltraVO2Max ships an update weekly, and Swimlog every 5 days. Most recently, UltraVO2Max was updated on October 15, 2026 and Swimlog on October 28, 2026.

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