OpenBook vs dynaimic
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
OpenBook
Read full descriptionHide 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: โข Bench Press โ weight ร reps โข Zercher Hold โ weight ร time โข Sled Push โ weight ร distance โข Planche Lean โ distance ร time โข Dead Hang โ time only โข Stretching โ time only โข 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. โโโ 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
dynaimic
Read full descriptionHide full description
A real personal-trainer experience, powered by AI, in your pocket. Most apps just log what you did. dynaimic decides what you should do next โ adapted to your goals, your recovery, and how your last session actually felt. TWO WAYS TO TRAIN โข Your coach builds today's session. Tap once for a complete workout โ warm-up, working sets, optional cardio and cool-down โ programmed around your goals, equipment, experience, split, and which muscles have recovered. โข Routines that progress themselves. Pick a template, build your own, or ask for a multi-week program that actually changes: each block gets its own split and its own exercises, instead of repeating one week forever. dynaimic climbs your weights, reps and RPE week over week, and deloads when a lift stalls. Training off a plan someone else wrote? Paste it in and it becomes a routine โ days, sets, reps and rest. NEW: STACK โ TRACK YOUR SUPPLEMENTS Your supplements, one tap per dose. Creatine, protein, vitamins, electrolytes โ grouped by when you take them, with a streak and a 12-week consistency grid for each one. Search the library or add anything you track yourself: name it, set the dose and the schedule, and get reminded only on the days that item is due. Everything you log stays yours. It never turns up in a coach message, a leaderboard or a notification. dynaimic records what you enter โ it doesn't dose or advise. Free for everyone. WHAT MAKES DYNAIMIC DIFFERENT โข It adapts session by session. Rate each workout โ too easy, just right, or crushed me โ and your load, volume, exercise choice and recovery dial in over time. โข Pick your coach. 29 AI coach personalities across 5 tiers, each programming and talking to you in their own voice. โข Real progression. Compound lifts climb in 2.5 kg steps, isolation in 1.25 kg โ once you have earned it. โข Honest numbers. Band exercises record the band you used instead of a made-up weight, and rest timers follow the rest your program prescribes. โข Stay hooked. Earn XP, climb the seasonal ranks, take on daily challenges, and chase 100+ achievements. FEATURES โ Stack: log supplements, protein and vitamins with reminders and streaks โ AI sessions built around goals, equipment, recovery and your feedback โ Routines: templates, AI-designed multi-week programs, or your own builder โ Import a written program and turn it into a routine โ Automatic progressive overload with RPE targets and auto-deloads โ Exercise swaps ranked by useful difference, for your gear or a full gym โ 1,000+ exercises with how-to demos โ Personal Records, session summaries, analytics, streaks and challenges PRO Coach-written workouts, multi-week programs and training reviews are Pro, along with plateau detection, optimal starting weights and the premium coaches. FREE Stack, template and custom routines, full logging, history and analytics, exercise swaps, challenges, streaks and coach chat โ free, with no trial to cancel. SUBSCRIPTION โข dynaimic Pro โ 1 Month auto-renewing subscription โข dynaimic Pro โ 1 Year auto-renewing subscription Payment is charged to your Apple Account at confirmation of purchase. It renews automatically at the same price unless auto-renew is turned off at least 24 hours before the current period ends. Manage it in your Apple Account Settings. PRIVACY & TERMS Your workout data is yours. We don't sell it. Privacy Policy: https://dynaimicpt.com/legal/privacy Terms of Use (EULA): https://dynaimicpt.com/legal/terms
Screenshots
Verdict
The clearest difference is ads: dynaimic at none against OpenBook's shown. OpenBook's advantage is iOS requirement (15.5 vs 17.0). On price, update cadence, in-app purchases and device support 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
Both are free to download. OpenBook sells 2 in-app purchases, starting at $3.99 per month and dynaimic sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
OpenBook ships an update every 2 weeks, dynaimic every 3 weeks. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.
| Parameter | OpenBook | dynaimic |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks โ better | Every 3 weeks |
| Ads | Yes | No โ better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod โ better | iPhone |
| Requires iOS | 15.5 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 55 MB | 78 MB |
| Age rating | 4+ | 12+ |
| Developer | OpenArcX Pty Ltd | Burak Ozaslan |
In-app purchases
OpenBook
- OpenBook Full Access - Monthly$3.991 Month
- OpenBook Full Access - Yearly$29.991 Year
dynaimic
- dynaimic Pro$6.991 Month
- dynaimic Pro โ Annual$39.991 Year









