Comparison

KBuddy 9 vs Six

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

Head to head
About

KBuddy 9

This digital companion helps you manage and execute your Kieser Training plans. It offers precise timers, automatic weight adjustments, and progress tracking with detailed statistics and muscle overviews. Syncs across Apple devices and integrates with Apple Health.

Highlights
  • Unlimited training plan creation
  • Precise workout timer
  • Automatic weight adjustments
  • Detailed progress statistics
  • Apple Health integration
  • Live Activity on Lock Screen
  • Apple Watch app
Features
Read full description

Ditch the clipboard — KBuddy is your digital workout companion for Kieser Training. Whether on iPhone, iPad, Apple Watch, or Vision Pro: your training plan is always with you. *Why KBuddy?* •⁠ ⁠Create and manage unlimited training plans •⁠ ⁠Precise timer with countdown, auto-stop, and pace control •⁠ ⁠Automatic weight adjustments based on duration or reps achieved •⁠ ⁠Train both sides together or independently •⁠ ⁠Live Activity shows your current workout on the Lock Screen •⁠ ⁠Apple Watch app with Ultra Action Button support •⁠ ⁠iCloud sync across all your devices *Track Your Progress* •⁠ ⁠Detailed statistics and muscle overviews •⁠ ⁠PDF export with weights, pace, settings, and progress changes •⁠ ⁠Control training reminders — never miss a scheduled session •⁠ ⁠Apple Health integration *Built for Your Workout* •⁠ ⁠Siri voice output during training •⁠ ⁠Sound and haptic feedback for phase changes •⁠ ⁠Dynamic Type for optimal readability •⁠ ⁠Create custom exercises •⁠ ⁠Returning after a break? Adjust all weights by percentage in one tap •⁠ ⁠Data backup and easy import from KBuddy 7 KBuddy runs on iPhone, iPad, Apple Watch, and Vision Pro. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Six

Features
Read full description

Der Sechs-Minuten-Gehtest gibt die Distanz an, die ein Proband innerhalb einer Zeitspanne von sechs Minuten zurücklegen kann. Daher ist der Sechs-Minuten-Gehtest ein einfaches, sicheres und kostengünstiges Instrument zur Einschätzung der funktionellen Leistungsfähigkeit einer Person. Wir stellen Ihnen eine App zur Verfügung, mit dem Sie Ihre voraussichtliche Gehstrecke von sechs Minuten ermitteln können. Das Testergebnis wird im Vergleich zur Normalbevölkerung angezeigt, sodass jeder seine individuelle Leistungsfähigkeit objektiv einschätzen kann.

Screenshots

KBuddy 94 screens
Six4 screens

Verdict

The call

The clearest difference is in-app purchases: Six at none against KBuddy 9's 8. Six also leads on iOS requirement (13.0 vs 18.0). KBuddy 9's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads 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. KBuddy 9 sells 8 in-app purchases, starting at $0.99 per 7 days. Six asks for nothing beyond the download.

UpkeepUpdate frequency

KBuddy 9 ships an update every 3 weeks, Six every 2 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
KBuddy 9 versus Six: the parameters behind the verdict, then further details
ParameterKBuddy 9Six
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews92.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, Apple Watch, Vision Pro — betteriPhone, iPad, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size79 MB109 MB
Age rating4+12+
DeveloperOleg MuellerUniversitaetsklinikum Wuerzburg

In-app purchases

8 purchases

KBuddy 9

Subscriptions6
  • Unlock Pro - Weekly$0.997 Days
  • Unlock Pro - Weekly - Family$1.997 Days
  • Unlock Pro - Monthly$1.991 Month
Show 3 more
  • Unlock Pro - Monthly - Family$2.991 Month
  • Unlock Pro - Yearly$17.991 Year
  • Unlock Pro - Yearly - Family$24.991 Year
One-time2
  • Unlock Pro$49.99
  • Unlock Pro - Family$89.99
None

Six

No in-app purchases

Questions

Is KBuddy 9 free?
KBuddy 9 is free to download, with in-app purchases available.
Is Six free?
Six is free to download, with no in-app purchases.
Do KBuddy 9 or Six have ads?
Neither KBuddy 9 nor Six shows ads.
Which is updated more often, KBuddy 9 or Six?
KBuddy 9 ships an update every 3 weeks, and Six every 2 months. Most recently, KBuddy 9 was updated on October 30, 2026 and Six on October 25, 2026.

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