Comparison

Subintervals vs Lactate Training

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

Head to head
About

Subintervals

Visualize your training data with detailed displays and interactive graphs. Customize your analysis and sync seamlessly with intervals.icu for up-to-the-minute insights into activities, events, and performance metrics.

Highlights
  • Detailed activity and event visualization
  • Interactive performance graphs
  • Seamless intervals.icu sync
  • Customizable data analysis
  • Actionable training insights
Features
Read full description

Elevate Your Training with Subintervals Subintervals transforms your intervals.icu data into actionable insights. This app brings your training activities, events, and performance metrics to life through detailed displays and interactive graphs. Customise and control your data for a tailored analysis, and seamlessly sync with intervals.icu for up-to-the-minute information. Key Features: - Detailed visualisation of activities and events. - Dynamic, interactive graphs for performance tracking. - Effortless sync with intervals.icu. Please note that it is an independent application developed by an enthusiast keen on providing a complementary tool to the official platform.

About

Lactate Training

An AI-powered coach for runners, cyclists, and triathletes that adapts training plans based on user feedback and existing watch data. Get personalized session recommendations, understand workout intensity, and adjust your schedule around life events.

Highlights
  • AI-driven personalized training plans
  • Voice and text-based coaching interaction
  • Integration with Garmin and Strava data
  • Adaptive scheduling for real-life events
  • Progress tracking dashboard
  • Session comparison and analysis
Features
Read full description

Less guesswork. More legendary training. Lactate Training is an AI coach for runners, cyclists and triathletes who train around work, family and a changing week. Ask about your training. Add how it felt. Learn what to try next. No blood lactate test needed. Start with the watch data you already have from Garmin or Strava. TRAINING HARD BUT NOT SURE WHAT'S WORKING? • What should I do today? Tell your coach how you feel and get today's session, based on your plan, your sleep and your recent training. • Why did that session feel hard? Your coach reads the recording, compares a similar session and asks what else was going on. • Am I improving? See pace and heart rate trends side by side, explained in plain English. • How do I fit training around life? Move a session or add a work trip and your week adjusts. Nothing changes until you say yes. ONE COACH, LOTS OF WAYS TO ASK • Type a question about any session and get a review in plain English • Talk it through by voice after your run, hands-free • Message your coach on WhatsApp to ask a question, log a session or move a workout • Connect ChatGPT or Claude and plan your week on a bigger screen, using your real numbers • Send workouts straight to your Garmin A COACH THAT REMEMBERS Your coach keeps your goals, preferences and training rules, and saves lessons from one session to use in the next. You can see, edit or delete all of it in Coaching Memory. SEE YOUR PROGRESS • Training dashboard with fitness, fatigue and training load • Sleep, HRV and resting heart rate trends • Compare similar sessions side by side • Weather on every session • Strava Segment Hunter BUILT FOR REAL LIFE • Plans that fit your week: let Auto Coach build one, or pick a ready-made plan • A daily check-in that takes about two minutes • Miles or kilometers, day and night themes, 24 languages • For runners from a first half marathon to a sub-3 marathon, plus cyclists, triathletes and Hyrox athletes. Coaches can manage their athletes on Max. PLANS Every plan starts with 30 days of Pro, free. Then choose: • Free: track and plan your training, with a small monthly AI allowance • Basic: unlimited WhatsApp coaching, Auto Coach, coach memory and 50 in-app AI requests a month • Pro: everything in Basic, plus 150 requests, the dashboard, session compare, Grill Me, weather and Send to Garmin • Max: everything in Pro, plus 1,000 requests and Coach mode Payment is charged to your Apple Account when you confirm your purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period, and your account is charged for renewal within the 24 hours before it ends. Manage or cancel your subscription in your App Store account settings. Any unused part of a free trial ends when you buy a subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lactatetraining.ai/policies/privacy-policy Lactate Training gives training guidance, not medical advice. Check with a doctor before starting a new training program.

Screenshots

Subintervals4 screens
Lactate Training4 screens

Verdict

The call

The clearest difference is rating: Subintervals at 5.0 against Lactate Training's 4.0. Subintervals also leads on review sentiment (100% vs 75%). On price, ratings volume, update cadence and ads 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. Subintervals sells 4 one-off in-app purchases and Lactate Training sells 9 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Subintervals holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of Subintervals's written reviews are positive against 75% of Lactate Training's.

UpkeepUpdate frequency

Subintervals ships an update weekly, Lactate Training every 8 days. The most recent releases landed on November 4, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 8 level
Subintervals versus Lactate Training: the parameters behind the verdict, then further details
ParameterSubintervalsLactate Training
PriceFreeFree
Rating5.0 (2 ratings) — better4.0 (2 ratings)
Positive reviews100.0% of reviews — better75.0% of reviews
Number of ratings22
Update frequencyWeekly — betterEvery 8 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size109 MB170 MB
Age rating4+4+
DeveloperInaki Arroyo NebredaBarney Reed

Customer experience

Subintervals

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Lactate Training

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

In-app purchases

4 purchases

Subintervals

One-time4
  • Coffee$3.99
  • Lunch$11.99
  • Big Thanks$17.99
Show 1 more
  • Sponsor$44.99
9 purchases

Lactate Training

Subscriptions9
  • Basic$4.991 Month
  • Full Access (Monthly)$9.491 Month
  • AI Access (Monthly)7 Days trial$9.951 Month
Show 6 more
  • Full Access + Coach (Monthly)$14.991 Month
  • Pro 6 Months$49.996 Months
  • Full Access (Yearly)$99.991 Year
  • AI Access (Yearly)1 Month trial$99.991 Year
  • Max 6 Months$119.996 Months
  • Full + Coach (Yearly)$229.991 Year

Questions

Is Subintervals free?
Subintervals is free to download, with in-app purchases available.
Is Lactate Training free?
Lactate Training is free to download, with in-app purchases available.
Which has better reviews, Subintervals or Lactate Training?
Subintervals is rated higher. Subintervals averages 5.0 out of 5 from 2 ratings, while Lactate Training averages 4.0 from 2 ratings.
Do Subintervals or Lactate Training have ads?
Neither Subintervals nor Lactate Training shows ads.
Which is updated more often, Subintervals or Lactate Training?
Subintervals ships an update weekly, and Lactate Training every 8 days. Most recently, Subintervals was updated on November 4, 2026 and Lactate Training on November 12, 2026.

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