Comparison

Pace It vs Lact8

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

Head to head
About

Pace It

This app helps runners analyze their training progress by tracking pace improvements across heart rate zones. It provides personalized training paces that adapt to your current fitness level, ensuring your workouts remain relevant. Monitor key metrics like VO2 max and training load for a comprehensive view of your development.

Highlights
  • Track pace progression across heart rate zones
  • Personalized adaptive training paces
  • Monitor VO2 max and training load
  • Build and run structured workouts on Apple Watch
  • Integrates with Strava and Apple Health
  • Shoe tracking and rotation
  • Personal best and yearly performance summaries
Features
Read full description

Pace It is built for runners who want to know if their training is working and if they are getting faster at the same effort. Track pace trends across heart rate zones and get personalized training paces that adjust as your fitness changes. Instead of guessing your current 5K, 10K or threshold pace, Pace It uses your recent runs to recalibrate training targets so workouts stay aligned with your fitness. KEY FEATURES If you train by heart rate zones and care about pacing accuracy and aerobic development, you're in the right place. Whether you’re training for a 5K, 10K, Half Marathon, Marathon, Ultra, or a structured interval block, Pace It helps you: - See if you're getting faster at the same effort - Keep workouts aligned with current fitness using personalised pace targets - Track training distribution and pace trends across heart rate zones - Monitor training load, VO2 max and race estimates - Build structured workouts and run them on Apple Watch Compatible with Strava. Syncs with Apple Health. Built by runners who care about clear, accurate performance insights. ADAPTIVE PACE TARGETS & INSIGHTS - Track monthly pace-at-effort trends - Running efficiency analysis - See training paces, HR ranges, RPE recommendations and race estimates based on your recent running data. - Build structured running workouts using your pace targets APPLE WATCH WORKOUTS Execute runs and see weekly training progress on your watch. - 5 running screens - 30+ configurable metrics - Structured intervals and workouts with real-time pacing guidance - Daily steps & activity time FITNESS TRENDS & RUN ANALYSIS - VO₂ max tracking & VDOT - Training load ratio and training distribution - Pace, heart rate, power, cadence, splits and segments INTEGRATIONS Compatible with Strava. Import and export runs automatically, with historical sync for deeper training analysis. WEEKLY & MONTHLY TRAINING PROGRESS: - Track mileage, duration, streaks and HR zone distribution - Set weekly run goals ADDITIONAL TOOLS: - Home & lock-screen widgets - Shoe tracking & rotation - Race calculator - Personal best tracking - Yearly performance summaries PRIVACY Pace It reads data only from Apple Health. All data is processed locally on your device. No accounts are required. ACCESS, SUBSCRIPTION & PURCHASE INFORMATION Pace It offers both free and paid features. The free version of Pace It includes selected app features only. Freemium does not include access to the Pace It Apple Watch app and Pro features. To access Pace It Pro features, including the Watch app, you can choose between: - Lifetime Access — one-time purchase - Subscriptions — Monthly or Yearly plans Subscription plans include a 1-week free trial. Pro access includes the full Pace It experience, including training trends, adaptive pace targets and Apple Watch features. PAYMENT & RENEWALS - If you start a free trial, you will not be charged until the trial period ends. Unless canceled at least 24 hours before the trial ends, your subscription will automatically renew at the selected price. - Payment is charged to your Apple ID at confirmation of purchase. - Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. - Your account will be charged for renewal within 24 hours before the period ends. - Manage or cancel your subscription at any time in your App Store account settings. Pace It is not a medical device, it provides training insights for informational and educational purposes only. TERMS & PRIVACY Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Additional Terms (Pace It Terms of Use): https://paceit.app/terms-of-service Privacy Policy: https://paceit.app/privacy-policy

About

Lact8

Read full description

Lact8 helps athletes identify their lactate thresholds (LT1 and LT2) from step test data and calculate personalized training zones. Features: • Record lactate, heart rate, and power/pace from step tests • Automatic threshold detection using proven methods • Multiple zone systems (3-Zone, 7-Zone Touretski, 8-Zone Couzens) • Track threshold progression over time • Export data as CSV, JSON, or Markdown Perfect for cyclists, runners, and triathletes who want data-driven training zones based on their own physiology.

Screenshots

Pace It4 screens
Lact84 screens

Verdict

The call

The clearest difference is in-app purchases: Lact8 at none against Pace It's 3. Lact8 also leads on iOS requirement (16.0 vs 18.0). On price, update cadence, 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. Pace It sells 3 in-app purchases, starting at $4.99 per month. Lact8 asks for nothing beyond the download.

UpkeepUpdate frequency

Pace It ships an update every 11 days, Lact8 weekly. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 8 level
Pace It versus Lact8: the parameters behind the verdict, then further details
ParameterPace ItLact8
PriceFreeFree
Rating4.0 (4 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings4 — better—
Update frequencyEvery 11 daysWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.016.0 — better
Further details — not scored
Size23 MB3 MB
Age rating4+4+
DeveloperDionysis KastellanisBEN REEVE

In-app purchases

3 purchases

Pace It

Subscriptions2
  • Pace It Access (Monthly)7 Days trial$4.991 Month
  • Pace It Access (Yearly)7 Days trial$39.991 Year
One-time1
  • Lifetime$89.99
None

Lact8

No in-app purchases

Questions

Is Pace It free?
Pace It is free to download, with in-app purchases available.
Is Lact8 free?
Lact8 is free to download, with no in-app purchases.
Do Pace It or Lact8 have ads?
Neither Pace It nor Lact8 shows ads.
Which is updated more often, Pace It or Lact8?
Pace It ships an update every 11 days, and Lact8 weekly. Most recently, Pace It was updated on October 13, 2026 and Lact8 on October 6, 2026.

Other comparisons