Comparison

Kunto Lite vs OpenBook

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

Head to head
About

Kunto Lite

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Kunto Lite app helps you to follow-up your recovery based on automatic collection of your daily activity data and self-reported experience of your physical condition. Kunto Lite includes: • Automatically extract activity data from smartphone and/or connected wearables • View your daily movement capacity and endurance and compare it to your target level • Report your pain and experienced health • Review the progress of your recovery by the weekly view • Share your recovery data with family, friends & carers • Get notifications and reminders • View FAQ’s and instructions. Your recovery data will always remain safe once you’ve signed up as a Kunto Lite user – even if you change or restore your phone. Recovery history is automatically visible on your new phone. Kunto Lite uses Apple HealthKit to read activity data from your smartphone sensors or connected wearables. After downloading the app you have to sign up for a subscription with a free trial. The subscription begins immediately but it won't be billed until the free trial period is over. Payment will be charged to your Apple ID at confirmation of purchase. Your subscription will automatically renew unless cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscription may be cancelled after purchase by going to the ‘Account’ screen from the main menu. If you cancel your subscription in the middle of a subscription period, you can still access your subscription and app data until the end of the current subscription period. When your subscription ends or is terminated, we store your data for 90 days. You can access your data during that time by subscribing again with your existing user ID. After the 90-day retention period ends, we disable the account and delete all customer data from the account. Account may also be deleted immediately by going to the ‘Account’ screen from the main menu. Deleting your account will remove your data permanently. Note that if you delete your account, you will not be refunded for the remaining days of your current subscription period. Terms and Conditions: https://kuntosolutions.com/terms-and-conditions Privacy Policy: https://kuntosolutions.com/en/privacy-policy

About

OpenBook

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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

Kunto Lite4 screens
OpenBook4 screens

Verdict

The call

The clearest difference is in-app purchases: Kunto Lite at none against OpenBook's 2. Kunto Lite also leads on ads (none vs shown) and iOS requirement (12.4 vs 15.5). OpenBook's advantage is update cadence (every 2 weeks vs every 2 months). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OpenBook sells 2 in-app purchases, starting at $3.99 per month. Kunto Lite asks for nothing beyond the download.

UpkeepUpdate frequency

Kunto Lite ships an update every 2 months, OpenBook every 2 weeks. The most recent releases landed on September 16, 2026 and September 10, 2026 respectively.

Scorecard4 real differences · 2 level
Kunto Lite versus OpenBook: the parameters behind the verdict, then further details
ParameterKunto LiteOpenBook
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.4 — better15.5
Further details — not scored
Size22 MB55 MB
Age rating4+4+
DeveloperKuntosolutions OyOpenArcX Pty Ltd

In-app purchases

None

Kunto Lite

No in-app purchases

2 purchases

OpenBook

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

Questions

Is Kunto Lite free?
Kunto Lite is free to download, with no in-app purchases.
Is OpenBook free?
OpenBook is free to download, with in-app purchases available.
Do Kunto Lite or OpenBook have ads?
OpenBook shows ads; Kunto Lite does not.
Which is updated more often, Kunto Lite or OpenBook?
Kunto Lite ships an update every 2 months, and OpenBook every 2 weeks. Most recently, Kunto Lite was updated on September 16, 2026 and OpenBook on September 10, 2026.

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