Comparison

OpenBook vs My Workout Diary

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

Head to head
About

OpenBook

Read full description

OpenBook is a clean, pen-and-paper style workout log. Built to be fast, simple, and flexible. No sign-up, no credit card required โ€” start right away with unlimited exercises and routines, full graph access, and CSV export for your own data. Log up to 28 training days. Subscribe anytime for unlimited logging. With OpenBook, you can: Log any exercise. Track any unit or combination of units. However you train โ€” strength, calisthenics, bodybuilding, powerlifting, yoga, or functional fitness โ€” OpenBook fits around it. For example: โ€ข Bench Press โ€” weight ร— reps โ€ข Zercher Hold โ€” weight ร— time โ€ข Sled Push โ€” weight ร— distance โ€ข Planche Lean โ€” distance ร— time โ€ข Dead Hang โ€” time only โ€ข Stretching โ€” time only โ€ข Arrowhead Lunge โ€” breaths Swipe between days Move between days with a simple swipe to review past sessions. See your training at a glance View your days across a calendar or heatmap. Plan or track anytime Start with a saved routine or log as you go. Time your rest. Add notes. Set custom rest timers and add notes for each session. View your progress with context Track your progress over time, including intensity through % max or %1RM. Compare and periodise Track two metrics on one timeline to support structured, periodised training. Edit or repeat sessions Quickly update past logs or duplicate sessions with a single tap. Download your data Export your data at any time. Back up your data to the cloud Keep your data safe and accessible. โ€”โ€”โ€” Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ OpenBook Terms of Service: https://openbook.fit/terms Privacy Policy: https://openbook.fit/privacy

About

My Workout Diary

Easily log your gym workouts, track progressive overload with clear visual indicators, and monitor body stats. Share your progress with friends and organize exercises for quick logging. Stay motivated and see your strength grow over time.

Highlights
  • Simple workout logging
  • Progressive overload tracking
  • Exercise library and custom exercises
  • Body stats tracking
  • Calendar view of training history
  • Workout sharing and social features
Features
Read full description

My Workout Diary is the simplest way to track progressive overload and build strength over time. Every time you log a workout, the app shows whether you lifted more weight or hit more reps than last time so you always know if you're progressing. SIMPLE LOGGING Log sets, reps, and weight in seconds. No complicated workout builders or forced programs. Just open the app, pick your exercise, and record what you did. PROGRESSIVE OVERLOAD TRACKING Clear visual indicators show when you've increased weight or reps compared to your previous session. Progressive overload is the key to getting stronger and this app makes it effortless to track. SHARE & CONNECT Share your workouts with friends and follow their progress. Like and comment on each other's sessions to stay motivated. Control exactly who sees your posts and diary with flexible privacy settings. EXERCISE LIBRARY & CUSTOM EXERCISES Choose from a built-in library of strength, cardio, and bodyweight exercises, or create your own. Organize exercises into custom groups like "Push Day" or "Leg Day" for faster logging. BODY STATS Track your bodyweight and body fat percentage over time alongside your training. CALENDAR VIEW See your training history at a glance. Know exactly which days you trained and what you did. NOTES Add notes to any training day to remember how you felt, what to adjust, or anything else. No ads. No clutter. Just a clean, fast workout log designed for lifters who care about getting stronger. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

OpenBook4 screens
My Workout Diary4 screens

Verdict

The call

The clearest difference is ads: My Workout Diary at none against OpenBook's shown. My Workout Diary also leads on update cadence (daily vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. OpenBook sells 2 in-app purchases, starting at $3.99 per month and My Workout Diary sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OpenBook ships an update every 2 weeks, My Workout Diary daily. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

Scorecard2 real differences ยท 6 level
OpenBook versus My Workout Diary: the parameters behind the verdict, then further details
ParameterOpenBookMy Workout Diary
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 2 weeksDaily โ€” better
AdsYesNo โ€” better
In-app purchasesYesYes
Monetizationโ€”Freemium
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS15.515.0 โ€” better
Further details โ€” not scored
Size55 MB43 MB
Age rating4+4+
DeveloperOpenArcX Pty LtdHUGH PETER ANDERSON

In-app purchases

2 purchases

OpenBook

Subscriptions2
  • OpenBook Full Access - Monthly$3.991 Month
  • OpenBook Full Access - Yearly$29.991 Year
2 purchases

My Workout Diary

Subscriptions2
  • Pro Monthly$1.991 Month
  • Pro Yearly$19.991 Year

Questions

Is OpenBook free?
OpenBook is free to download, with in-app purchases available.
Is My Workout Diary free?
My Workout Diary is free to download, with in-app purchases available.
Do OpenBook or My Workout Diary have ads?
OpenBook shows ads; My Workout Diary does not.
Which is updated more often, OpenBook or My Workout Diary?
OpenBook ships an update every 2 weeks, and My Workout Diary daily. Most recently, OpenBook was updated on October 14, 2026 and My Workout Diary on October 13, 2026.

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