Comparison

Moai vs OpenBook

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

Head to head
About

Moai

This app fosters consistency in fitness through small accountability groups. Create or join groups with friends, family, or coaches to set movement goals, follow personalized plans, track progress, and motivate each other.

Highlights
  • Create private accountability groups
  • Join coach-led groups
  • Personalized workout programming
  • Weekly movement goals
  • Workout and activity tracking
  • Group progress dashboards
  • Streaks and milestone tracking
Features
Read full description

Staying consistent with fitness is hard alone. Research has consistently shown that people are more likely to stick with healthy habits when they have accountability and support from others. That's why Moai is built around small accountability groups called Moai's. Create a Moai with friends, family, or coworkers, or join one led by a coach. Set weekly movement goals, follow a personalized fitness plan, track your progress, and support one another along the way. MAKE CONSISTENCY A GROUP PROJECT A Moai is a small accountability group built around a shared commitment to movement. Whether you're training for an event, building healthier habits, getting stronger, or simply trying to move more each week, your Moai helps you stay motivated through shared goals, encouragement, and accountability. PERSONALIZED FITNESS PLANS Receive strength and movement plans tailored to your goals, experience level, schedule, and available equipment. Whether you're working out at home, training in a gym, or just getting started, your plan adapts to fit your life. TRACK PROGRESS TOGETHER Stay motivated with shared progress tracking, weekly commitments, streaks, and milestones. Celebrate wins together, encourage one another through setbacks, and build momentum as a group. ADD A COACH TO YOUR MOAI Looking for extra support? Bring a coach into your Moai for personalized guidance, workout adjustments, progress reviews, and expert accountability. Get the motivation of moving with people you know, plus the expertise of an experienced coach. FEATURES • Create private accountability groups with friends, family, and coworkers • Join coach-led accountability groups • Personalized workout programming • Weekly movement commitments and goals • Workout and activity tracking • Group progress dashboards • Streaks and milestone tracking • Group accountability and encouragement • Coach support and guidance • Reminders and check-ins Find your people. Build your rhythm. Move more, together.

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 — 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 — strength, calisthenics, bodybuilding, powerlifting, yoga, or functional fitness — OpenBook fits around it. For example: • Bench Press — weight × reps • Zercher Hold — weight × time • Sled Push — weight × distance • Planche Lean — distance × time • Dead Hang — time only • Stretching — time only • Arrowhead Lunge — 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. ——— 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

Screenshots

Moai4 screens
OpenBook4 screens

Verdict

The call

The clearest difference is ads: Moai at none against OpenBook's shown. OpenBook's advantage is update cadence (every 2 weeks vs monthly). On price, in-app purchases, device support and iOS requirement 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

Both are free to download. Moai sells 1 in-app purchase, starting at $14.99 per month and OpenBook sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Moai ships an update monthly, OpenBook every 2 weeks. The most recent releases landed on October 30, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 7 level
Moai versus OpenBook: the parameters behind the verdict, then further details
ParameterMoaiOpenBook
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyMonthlyEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.415.5 — better
Further details — not scored
Size89 MB55 MB
Age rating12+4+
DeveloperMoai LLCOpenArcX Pty Ltd

In-app purchases

1 purchases

Moai

Subscriptions1
  • Moai Premium$14.991 Month
2 purchases

OpenBook

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

Questions

Is Moai free?
Moai is free to download, with in-app purchases available.
Is OpenBook free?
OpenBook is free to download, with in-app purchases available.
Do Moai or OpenBook have ads?
OpenBook shows ads; Moai does not.
Which is updated more often, Moai or OpenBook?
Moai ships an update monthly, and OpenBook every 2 weeks. Most recently, Moai was updated on October 30, 2026 and OpenBook on October 14, 2026.

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