Comparison

Lactate Express vs eval

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

Head to head
About

Lactate Express

This app enables performance diagnosticians and endurance athletes to conduct precise lactate step-tests. It offers scientifically recognized models for computing thresholds and generating training zones, replacing manual spreadsheet methods. The app supports automatic data capture via Bluetooth and generates professional, branded PDF reports.

Highlights
  • Precise lactate step-test capture
  • Multiple scientifically recognized threshold models
  • Automatic Bluetooth data readings
  • Generation of applicable training zones
  • Professional branded PDF reports
  • Comparison and tracking of tests over time
  • AI-powered personalized training plans
Features
Read full description

Lactate Express brings the lactate step-test to iPad, Mac, and iPhone — built for performance diagnosticians and serious endurance athletes. Capture every step-test precisely, compute thresholds with scientifically recognized models, and turn them into training zones you can actually apply. No more error-prone spreadsheets and manual entry. CAPTURE — fast and error-free • Step-test one step at a time: load (watts or km/h), lactate, heart rate, and Borg per step • Automatic readings over Bluetooth: SensCore lactate meters and Polar heart-rate sensors • Clear phases: rest, examination, recovery — with the current step clearly marked • Large input fields and one-tap entry, even under time pressure during a test ANALYZE — scientifically grounded • Six threshold models: Mader (4.0 mmol/l), Dickhuth, LT1, dMax, dMaxMod, and user-defined fixed values • Automatic curve fitting with coefficients and R² — the math stays transparent • Training zones such as GA1, GA2, and EB at a glance • Publication-grade charts REPORT — professional • Branded PDF reports with header and footer, charts, tables, and zones • Share via the native iOS and macOS share sheet COMPARE & TRACK — over time • Compare Tests: put any two step-tests side by side (Mac and iPad) to see exactly what changed • Home dashboard with threshold trends and deltas — an athlete's form at a glance • Roster overview to manage many athletes from one place (Team/Pro) • Cohort percentiles: see where an athlete ranks within the group TRAIN — with a plan • Training plan straight from your training zones • Personalized training plans from Jo, the mesics AI assistant (with a subscription) FIND — diagnostics near you • Diagnostician Map: performance diagnosticians near you at a glance EDUCATION • Education access for partner workshops: the full feature set for the length of your course, unlocked with a code or QR code — no subscription, no payment details WHO IT'S FOR • Diagnosticians: fast capture, athlete management, professional reports • Athletes: clear zones instead of jargon, an honest performance snapshot PLATFORMS Native SwiftUI — optimized for iPad and Mac, compact on iPhone, and ready for iPhone Duo: the outer display when closed, the large inner display when open. SUBSCRIPTIONS Lactate Express offers auto-renewable subscriptions with monthly and yearly terms. The subscription title, duration and price are shown in the app before purchase. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your Apple Account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. Privacy Policy: https://www.lactate-express.de/lactate-express-policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Lactate Express — train smarter, not harder.

About

eval

This app acts as your digital cycling coach, transforming your training data into actionable insights. It helps you understand the meaning behind your performance metrics and guides your decisions on when to push harder or recover. Seamlessly integrates with popular fitness trackers and platforms.

Highlights
  • Interprets training session data
  • Provides guidance on exertion levels
  • Adapts training load to life factors
  • Tracks progress towards goals
  • Connects with Strava, Garmin, Apple Health, etc.
Features
Read full description

You train. Your coach gets to know you. eval:u is your personal AI coach for road and gravel cycling. It learns from your past sessions, identifies your strengths and weaknesses, and builds your training around you. No training plan templates. Your goals, your progress and your everyday life shape the plan. A COACH THAT LEARNS FROM YOUR TRAINING Which sessions help you improve? When do you need more recovery? eval:u identifies patterns in your training and uses those insights to plan what comes next. YOUR TRAINING PLAN, BUILT FOR YOU Your goals, available time and fitness form the foundation. When your schedule or recovery changes, your training adapts. KNOW HOW TO APPROACH EVERY SESSION Get practical guidance on pacing, fuelling and hydration. Your coach also considers how you performed in similar sessions before. UNDERSTAND WHY YOU TRAIN THIS WAY Why take it easy today? Why fewer intervals this week? Ask your coach directly in the chat. It explains its decisions using your data and training history. SEE YOUR PROGRESS Understand your strengths, discover where you can improve, and track how your performance develops. CONNECT YOUR TRAINING DATA Bring together your data from Strava, Garmin, Apple Health, WHOOP, Oura, ROUVY and Wahoo to power your personal coaching. TRY IT FREE FOR 14 DAYS Connect your data, choose your goal and get to know your coach. eval:u — Your training. Your coach. By using this app, you agree to our Terms of Use and Privacy Policy. Privacy Policy: https://www.evalu-app.com/privacy Terms of Use: https://www.evalu-app.com/terms

Screenshots

Lactate Express2 screens
eval4 screens

Verdict

The call

The clearest difference is review sentiment: eval at 100% against Lactate Express's 38%. eval also leads on iOS requirement (15.0 vs 17.5). On price, update cadence, ads and in-app purchases 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. Lactate Express sells 4 in-app purchases, starting at $24.99 per month and eval sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 6 level
Lactate Express versus eval: the parameters behind the verdict, then further details
ParameterLactate Expresseval
PriceFreeFree
Positive reviews37.5% of reviews100.0% of reviews — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.515.0 — better
Further details — not scored
Size135 MB97 MB
Age rating4+4+
DeveloperCOPAtec GmbHeval:u Athlete Analytics UG (haftungsbeschränkt)

Customer experience

Lactate Express

Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

eval

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Lactate Express

Subscriptions4
  • Teams (Monthly)$24.991 Month
  • Professionals (1 Month)$44.991 Month
  • Teams (Yearly)$250.001 Year
Show 1 more
  • Professionals (Yearly)$399.001 Year
3 purchases

eval

Subscriptions3
  • eval:u monthly subscription$12.991 Month
  • eval:u 6-months subscription$69.996 Months
  • eval:u yearly subscription$119.991 Year

Questions

Is Lactate Express free?
Lactate Express is free to download, with in-app purchases available.
Is eval free?
eval is free to download, with in-app purchases available.
Do Lactate Express or eval have ads?
Neither Lactate Express nor eval shows ads.
Which is updated more often, Lactate Express or eval?
Lactate Express ships an update every 3 weeks, and eval every 3 weeks. Most recently, Lactate Express was updated on November 3, 2026 and eval on October 30, 2026.

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