Comparison

marble.fit vs SweatDiary

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

Head to head
About

marble.fit

Features
Read full description

Marble is a private workout journal built for fast logging, focused training, and clear progress. Record weights, reps, distance, time, RPE, rest, notes, bodyweight, and supplements without an account, ads, or tracking. Your core data stays on your iPhone or iPad. ADD A WORKOUT IN YOUR OWN WORDS - Paste or type natural language, gym notation, multi-day Notes, or a Hevy or Strong CSV - Let Apple Intelligence structure prose on device when available - Review every workout, exercise match, set, date, RPE, rest, and note before saving - Resume an interrupted review with your saved edits intact - Keep working with deterministic on-device parsing for notation and file imports LOG WITHOUT LOSING YOUR FLOW - Repeat your last set or use Save + Next for quick logging - See personal-record targets while you enter a set - Start and finish focused workout sessions - Search completed sessions, filter by date, and repeat a workout as an editable draft - Build weekly splits and reusable sprint prescriptions - Track rest with an in-app timer, Live Activity, Dynamic Island, and rest-complete alert UNDERSTAND YOUR PROGRESS - See your top weighted exercises with their personal-record weights and dates - Open Details for weekly goals, estimated 1RM, records, and training consistency - Review Daily Highlights: a private evening recap of truthful same-day progress - Track bodyweight manually or import it from Apple Health, and correct a weigh-in if a number was wrong - Compare strength relative to bodyweight with a per-lift DOTS score - Explore muscle-group, rep-range, effort, supplement, and calendar views REACH MARBLE FROM iOS - Add the Weekly Goal widget to your Home Screen or Lock Screen - Log a set, repeat your last set, and start or finish workouts with Siri and Shortcuts - Find exercises through Spotlight - Open quick logging from Control Center, the Lock Screen, or the Action button BRING IN MORE WORKOUTS - Import Apple Health and Apple Watch workouts - Bring Garmin workouts through Apple Health - Scan handwritten workouts with on-device text recognition and review before saving - Optionally send completed strength sessions to Apple Health YOUR DATA STAYS YOURS - Export and restore a portable JSON backup of your persisted training data - Progress photos and videos remain on your device and are not included in backup files - No account, Marble server, advertising, or third-party tracking Just your training, clearly recorded and clearly understood.

About

SweatDiary

Features
Read full description

Sweat Diary is a fast, distraction-free workout journal for your iPhone and Mac. Log your workouts, jot down notes, and find them later — no dashboards, no gamification, no clutter. • Log any workout in seconds - gym, running, cycling, rowing, kitesurfing, hiking, or your own custom type • Free-text notes for every entry - capture the details that matter to you • Attach photos to your sessions • See all your activities on a map • Full-text search to find any past workout instantly • Synch between Mac and iPhone via iCloud • Import via HealthKit on iPhone • Weekly activity strip and stats to stay aware without obsessing

Screenshots

marble.fit4 screens
SweatDiary3 screens

Verdict

The call

The clearest difference is update cadence: SweatDiary at every 4 days against marble.fit's fortnightly. SweatDiary also leads on iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

marble.fit ships an update fortnightly, SweatDiary every 4 days. The most recent releases landed on October 22, 2026 and October 13, 2026 respectively.

Scorecard2 real differences Ā· 4 level
marble.fit versus SweatDiary: the parameters behind the verdict, then further details
Parametermarble.fitSweatDiary
PriceFreeFree
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, Mac
Requires iOS26.018.0 — better
Further details — not scored
Size10 MB7 MB
Age rating4+4+
DeveloperLorenzo Quaid SisonChristoph Werner

In-app purchases

None

marble.fit

No in-app purchases

None

SweatDiary

No in-app purchases

Questions

Is marble.fit free?
marble.fit is free to download, with no in-app purchases.
Is SweatDiary free?
SweatDiary is free to download, with no in-app purchases.
Do marble.fit or SweatDiary have ads?
Neither marble.fit nor SweatDiary shows ads.
Which is updated more often, marble.fit or SweatDiary?
marble.fit ships an update fortnightly, and SweatDiary every 4 days. Most recently, marble.fit was updated on October 22, 2026 and SweatDiary on October 13, 2026.

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