Comparison

Subintervals vs Tarmac Trainer

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

Tarmac Trainer

Features
Read full description

Tarmac Trainer: Real Roads, Indoors Ride real roads on your smart trainer. Climb England's Box Hill, circle Richmond Park or take on the whole Pacific Coast Highway in 3D, race ghost riders, and follow structured workouts that set your trainer's resistance for you. Ride Real Roads in 3D Routes are built from real terrain, so the gradient you see is the gradient you feel: beech woods on Box Hill, parkland in Richmond, redwoods and ocean views on the Pacific Coast. Prefer a map? Switch views any time. Race Your PR, the KOM and Other Riders Ghost riders show exactly where you stand: your personal best, the KOM and your last attempt on every climb, and riders who have ridden the road ahead of you on long routes. Real Climbs from Strava Ride the Strava segments you've starred, your saved Strava routes and Tarmac's most popular climbs, with leaderboards and your PRs. Save your rides to Strava with one tap. Workouts That Set Your Power A library of structured workouts for endurance, sweet spot, threshold and recovery. Your smart trainer holds each interval's target for you, and one tap makes the whole session easier or harder. Epic Rides Keep coming back to long routes like the Pacific Coast Highway (almost 3,000 km) and the Shikoku Trail: Tarmac remembers where you stopped. Energy Pods, Streaks and the Tarmac League Fill energy pods as you ride, keep your weekly streak going and climb the weekly league against riders around the world. Works With Your Trainer Wahoo KICKR, Tacx, Elite, Zwift Hub and other Bluetooth smart trainers, plus power meters, cadence sensors and heart-rate straps. Try It Without a Trainer Take a demo ride: a test rider does the pedalling while a quick tour shows you around. Fast, Simple, and Ready to Ride Tarmac is designed to get you from app launch to riding in seconds, so you spend more time training and less time waiting. Start Your Journey Today Download Tarmac Trainer now and enjoy a free trial. Experience real-world roads, tailored workouts and epic adventures, all from the comfort of your home.

Screenshots

Subintervals4 screens
Tarmac Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: Tarmac Trainer at none against Subintervals's 4. Subintervals's advantage is iOS requirement (16.4 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. Subintervals sells 4 one-off in-app purchases. Tarmac Trainer asks for nothing beyond the download.

UpkeepUpdate frequency

Subintervals ships an update weekly, Tarmac Trainer every 5 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
Subintervals versus Tarmac Trainer: the parameters behind the verdict, then further details
ParameterSubintervalsTarmac Trainer
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better18.0
Further details — not scored
Size109 MB225 MB
Age rating4+4+
DeveloperInaki Arroyo NebredaiJisho

In-app purchases

4 purchases

Subintervals

One-time4
  • Coffee$3.99
  • Lunch$11.99
  • Big Thanks$17.99
Show 1 more
  • Sponsor$44.99
None

Tarmac Trainer

No in-app purchases

Questions

Is Subintervals free?
Subintervals is free to download, with in-app purchases available.
Is Tarmac Trainer free?
Tarmac Trainer is free to download, with no in-app purchases.
Do Subintervals or Tarmac Trainer have ads?
Neither Subintervals nor Tarmac Trainer shows ads.
Which is updated more often, Subintervals or Tarmac Trainer?
Subintervals ships an update weekly, and Tarmac Trainer every 5 days. Most recently, Subintervals was updated on October 24, 2026 and Tarmac Trainer on October 28, 2026.

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