Comparison

kaizen | Adaptive Run Training vs Saga

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

Head to head
About

kaizen | Adaptive Run Training

This app uses your running history to calculate your current fitness and set dynamic weekly distance targets. It offers personalized training guidance to help you achieve your running goals, whether for a specific race or general improvement. The app provides race predictions and flexible training plans that adapt to your schedule.

Highlights
  • Data-driven training partner
  • Dynamic weekly distance targets
  • Personalized fitness calculations
  • Race predictions for various distances
  • Flexible training plans
  • Build consistency and improve fitness
Features
Read full description

kaizen is load-based run training for committed runners, starting with the running you have already done. Connect Strava, Garmin or Apple Health so kaizen can analyse your training and race history. See how your fitness is developing, what shape you are in now and what your training suggests is possible. kaizen then connects that picture with your goal and timeline to map the weekly training load needed ahead. kaizen does not process or store location data. Train toward a 5K, 10K, half marathon or marathon—or set a rate of improvement without an upcoming race. CHOOSE HOW YOU TRAIN Use a suggested training structure or build the week yourself: • Even Spread for a calm, repeatable weekly rhythm • 1 Long, 1 Hard to anchor the week around one longer run and one harder effort • Build Your Own for complete control over the week Choose structured workouts, plan your runs and see how each session contributes to your weekly target. ADAPT AS YOU GO Move or edit sessions when the week changes. Every completed run recalculates both your current fitness and the training load needed ahead. HOW LOAD WORKS Equal distances do not always represent equal training. kaizen uses distance, pace and elevation—along with supported cross-training minutes—to understand the load created by different activities. This keeps the bigger picture consistent while giving you control over how the work gets done. Start with a seven-day free trial. Terms: https://runkaizen.com/terms Privacy: https://runkaizen.com/privacy

About

Saga

This app helps athletes and coaches plan, execute, and analyze blood lactate tests for running and cycling. It streamlines the process of finding an athlete's lactate inflection point, a key metric for endurance performance.

Highlights
  • Lactate testing protocols for running and cycling
  • Determine lactate inflection point (LIP)
  • Analyze endurance performance
  • Streamline testing process
  • Metabolic efficiency indicator
Features
Read full description

The application is a comprehensive tool designed to assist athletes and coaches in the meticulous planning, execution, and analysis of blood lactate testing protocols specifically for running and cycling activities. Its core objective is to streamline the process of determining an athlete's lactate inflection point (LIP) or lactate threshold, a critical indicator of endurance performance and metabolic efficiency.

Screenshots

kaizen | Adaptive Run Training4 screens
Saga2 screens

Verdict

The call

The clearest difference is review sentiment: Saga at 100% against kaizen | Adaptive Run Training's 58%. Saga also leads on in-app purchases (none vs 15). On price, ads, 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. kaizen | Adaptive Run Training sells 15 in-app purchases, starting at $12.99 per month. Saga asks for nothing beyond the download.

Scorecard3 real differences · 7 level
kaizen | Adaptive Run Training versus Saga: the parameters behind the verdict, then further details
Parameterkaizen | Adaptive Run TrainingSaga
PriceFreeFree
Rating4.8 (28 ratings) — better—
Positive reviews58.0% of reviews100.0% of reviews — better
Number of ratings28 — better—
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhoneiPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size81 MB1 MB
Age rating4+4+
DeveloperRun Kaizen LTDNucleon AS

Customer experience

kaizen | Adaptive Run Training

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews88 reviews
Positive58.0%
Neutral13.6%
Negative28.4%

Saga

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

kaizen | Adaptive Run Training

Reported bugs

25 issues
  • Setup process crashes or loops
  • App crashes frequently
  • Mileage calculations are incorrect
  • Planned mileage doesn't add up correctly
  • App doesn't get past the first step
Show 20 more
  • Race prediction screen freezes
  • App doesn't work at all
  • Data imports incorrectly (mileage/pace)
  • Issues with unit conversion (miles/kilometers)
  • Subscription charge without reminder
  • Weekly targets change based on paces
  • Only shows one week ahead
  • Can't get past prediction screen
  • Stuck on loading stage
  • Imported Strava data is wonky
  • Race predictor only gives marathon distance prediction
  • Training days logged as previous day
  • Cannot control subscription
  • Inconsistent distance recommendations
  • Records disappear and reappear
  • Improve prediction section hides event selection
  • Week planning tool shows wrong paces
  • Marathon goal always defaults to 2:00:00
  • Can't consistently log in
  • App is immature and has bugs

Requested features

9 requests
  • Allow editing of runs
  • More personalization in training plans
  • Ability to start the training week on different days
  • Consider elevation in training calculations
  • Add more workout suggestions and paces
Show 4 more
  • Predict times for distances other than marathon
  • FAQ and tutorials for better understanding
  • Ability to plan runs in decimals
  • Integration with other platforms beyond Strava

Saga

Not enough reviews yet to summarise bugs or requests.

In-app purchases

15 purchases

kaizen | Adaptive Run Training

Subscriptions15
  • Subscription1 Month trial$12.991 Month
  • Subscription$12.991 Month
  • Monthly Subscription7 Days trial$14.991 Month
Show 12 more
  • Monthly Subscription14 Days trial$14.991 Month
  • Subscription$14.991 Month
  • Subscription$19.993 Months
  • Subscription$24.993 Months
  • Quarterly Subscription14 Days trial$34.993 Months
  • Quarterly Subscription7 Days trial$34.993 Months
  • Subscription$49.991 Year
  • Subscription$69.991 Year
  • Annual Subscription7 Days trial$89.991 Year
  • Annual Subscription14 Days trial$89.991 Year
  • Subscription1 Month trial$89.991 Year
  • Subscription2 Months trial$89.991 Year
None

Saga

No in-app purchases

Questions

Is kaizen | Adaptive Run Training free?
kaizen | Adaptive Run Training is free to download, with in-app purchases available.
Is Saga free?
Saga is free to download, with no in-app purchases.
Do kaizen | Adaptive Run Training or Saga have ads?
Neither kaizen | Adaptive Run Training nor Saga shows ads.

Other comparisons