Comparison

STRAFFR vs KraftApp for Kieser Training

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

Head to head
About

STRAFFR

This app offers personalized, data-driven resistance band workouts. It provides over 100 exercises and guided routines for all fitness levels, with smart feedback for technique refinement when using a connected smart band. Progress can be synced with Apple Health.

Highlights
  • Personalized resistance band workouts
  • Over 100 exercises designed by professionals
  • Smart band integration for real-time feedback
  • Guided full-body routines for all levels
  • Apple Health sync and performance analytics
  • Portable fitness solution
Read full description

STRAFFR: Your Smart Resistance Band Training App Discover a new standard in resistance band training with the STRAFFR app. Whether you’re training with a classic resistance band or the connected STRAFFR smart band, STRAFFR transforms your workout into a personalised, data-driven fitness experience. Features and Benefits Train Anywhere, Anytime Access over 100 resistance band exercises designed by physiotherapists and trainers to improve strength, flexibility, and mobility. Tailored Workouts Guided full-body workouts for all fitness levels, whether you’re using a traditional resistance band or the STRAFFR smart band. Smart Feedback With the STRAFFR smart band, receive real-time audio and visual coaching to refine technique, reduce injury risk, and maximise results. Seamless Integration Sync your progress with Apple Health and track performance using advanced analytics. Portable Fitness Turn your living room, park, or hotel room into a personal gym with minimal equipment. STRFAFFR combines proven training principles with cutting-edge digital technology to deliver a smarter, more effective resistance band workout. Start training now and experience the future of resistance band fitness with STRAFFR. TERMS OF USE https://shop.straffr.com/policies/terms-of-service PRIVACY POLICY https://shop.straffr.com/policies/privacy-policy

About

KraftApp for Kieser Training

Manage your Kieser Training workouts seamlessly on your smartphone. Create, edit, and track multiple training plans, and sync them across devices. Export your progress for trainer discussions.

Highlights
  • Create and edit training plans
  • Manage multiple plans
  • Training mode for focus
  • Track progress
  • Cross-device syncing
  • Export plans for trainers
Features
Read full description

Gone are the days of juggling paper training plans and clipboards. Plan, measure, and document your Kieser Training effortlessly using your smartphone. Benefit from the following features: * Create and edit your training plan * Manage multiple training plans simultaneously * Training mode, allowing you to focus on your workout * Track your training progress * Access your training plan across multiple smartphones * Export your training plan for discussions with your trainer We are keen to incorporate your desires and ideas. Let us know what you think of the app and share your suggestions at: https://getkraft.app/en

Screenshots

STRAFFR4 screens
KraftApp for Kieser Training4 screens

Verdict

The call

The clearest difference is ads: KraftApp for Kieser Training at none against STRAFFR's shown. STRAFFR's advantage is review sentiment (66% vs 43%). On price, update cadence, in-app purchases and monetization model 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. STRAFFR sells 3 in-app purchases, starting at $2.99 per month and KraftApp for Kieser Training sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 3, 2026.

Scorecard2 real differences · 8 level
STRAFFR versus KraftApp for Kieser Training: the parameters behind the verdict, then further details
ParameterSTRAFFRKraftApp for Kieser Training
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews65.8% of reviews — better42.9% of reviews
Number of ratings3 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size93 MB53 MB
Age rating4+4+
DeveloperSTRAFFR GmbHSebastian Westhues

Customer experience

STRAFFR

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews38 reviews
Positive65.8%
Neutral5.3%
Negative28.9%

KraftApp for Kieser Training

Written reviews14 reviews
Positive42.9%
Neutral21.4%
Negative35.7%

In-app purchases

3 purchases

STRAFFR

Subscriptions3
  • STRAFFR+14 Days trial$2.991 Month
  • 6 Month STRAFFR+14 Days trial$19.996 Months
  • 12 Monate STRAFFR+14 Days trial$29.991 Year
3 purchases

KraftApp for Kieser Training

Subscriptions3
  • Supporter (1 Monat)$0.991 Month
  • Supporter (6 Monate)$5.996 Months
  • Supporter (12 Monate)$9.991 Year

Questions

Is STRAFFR free?
STRAFFR is free to download, with in-app purchases available.
Is KraftApp for Kieser Training free?
KraftApp for Kieser Training is free to download, with in-app purchases available.
Do STRAFFR or KraftApp for Kieser Training have ads?
STRAFFR shows ads; KraftApp for Kieser Training does not.
Which is updated more often, STRAFFR or KraftApp for Kieser Training?
STRAFFR ships an update every 2 months, and KraftApp for Kieser Training every 2 months. Most recently, STRAFFR was updated on November 3, 2026 and KraftApp for Kieser Training on November 3, 2026.

Other comparisons