Fathom vs Swimlog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fathom
Read full descriptionHide full description
Fathom is the freediving companion built for divers who take their training seriously. Track breath holds, follow structured training tables, log every dive, and monitor your personal bests — all in one app, synced to iCloud. TRAINING TABLES Built-in CO₂ and O₂ tables with guided holds and timed rest periods. Each session runs automatically — you focus on the breath, not the clock. Build your own tables with the Custom Table Builder and save them as reusable presets with Fathom Pro. BREATHWORK Four guided breathwork techniques for dry training: · Box breathing — pre-dive calm and nervous system reset · Coherence breathing — surface recovery at 6 breaths per minute · 4-7-8 breathing — deep relaxation between sessions · Diaphragmatic breathing — the foundation of every effective breath-up DIVE LOG Log sessions across eight disciplines: Static (STA), Dynamic (DYN), Dynamic No Fins (DNF), Dynamic Bi-Fins (DYNB), Constant Weight (CWT), Constant Weight Bi-Fins (CWTB), Constant No Fins (CNF), and Free Immersion (FIM). Record depth, distance, or hold time alongside water temperature, location, buddy context, equipment, RPE, mental state, and sleep quality. Log safety incidents — including LMC, blackout, and squeeze — with severity and notes. Your entire history syncs to iCloud automatically. PERSONAL BESTS & GOALS Set per-discipline training goals and track personal bests for STA, DYN, DNF, CWT, CNF, and FIM. Every new best is recorded the moment you log a dive that beats it. FATHOM PRO Upgrade to unlock: · Custom training tables · Save and reuse table presets · Unlimited dive log entries Fathom Pro is available as a monthly or annual subscription. Subscriptions are billed to your Apple ID account and auto-renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple ID account settings at any time. Monthly: €2.99/month Annual: €19.99/year (save 44%) Terms of Use: https://fathomfreedive.app/terms Privacy Policy: https://fathomfreedive.app/privacy
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.
- 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
Read full descriptionHide 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
Verdict
The clearest difference is update cadence: Swimlog at every 5 days against Fathom's every 3 weeks. 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
Both are free to download. Fathom sells 2 in-app purchases, starting at $2.99 per month and Swimlog sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Fathom ships an update every 3 weeks, Swimlog every 5 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | Fathom | Swimlog |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Subscription |
| Devices | iPhone | iPhone |
| Requires iOS | 17 — better | 18.0 |
| Further details — not scored | ||
| Size | 10 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Brian Theuma | Edward Baltaza |
In-app purchases
Fathom
- Fathom: Freedive Pro Monthly$2.991 Month
- Fathom: Freedive Pro Yearly$19.991 Year
Swimlog
- Swimlog Pro Monthly7 Days trial$9.991 Month
- Swimlog Pro Yearly7 Days trial$79.991 Year
- Swimlog Pro Lifetime$169.99









