Everything you want to know about Summit.

That is what it is built to do, and it is worth being exact about how far it goes today. In one app: your recovery and your sleep, read against your own baselines; every ride imported on its own; training load and power analysis on the sport's own metrics; a plan that rewrites itself around both; and your race-day fuelling.

What it does not cover: Summit prescribes cycling. Other sports are recorded and count towards your load, but nothing is structured or coached for them. There is no Android app and no web version. Daily training-driven nutrition, with recipes and a shopping list, is in development and not part of the current App Store release.

And if you keep a platform for deep analysis, you don't have to drop it. Summit pushes its structured sessions to intervals.icu and reads your wellness data back, so the two hold the same season.

From a deterministic periodisation engine, not from a language model. It works backwards from your event: the phases between now and the date, then one weekly load budget, then the sessions that fit inside it. Each layer reads only the one above it, which is what makes a session's load traceable all the way up to the date you gave it.

The models are the published ones. Load follows the Performance Manager model of Allen, Coggan & McGregor; taper length follows Bosquet et al. and Mujika & Padilla; peak length follows Issurin; intensity distribution follows Seiler & Kjerland. Summit ships that bibliography inside the app, every reference with its DOI, reachable from the screens that use it.

What stays ours is how those models are combined and weighted; that lives in the engine and is not published. Everything else you can check: the inputs are your own rides and your own nights, and every output traces back to a rule.

Depends on how you define AI. No model decides anything: fitness, fatigue, form, your readiness and your session are computed by a deterministic engine that follows codified sports-science rules. In two places — your recovery trend and today's session — an on-device model writes a short explanation of a decision the engine has already taken, because a generic template would be worse than useless there. If it isn't available, the deterministic text is what you get anyway.

We think "algorithm" is more honest than "AI" here. Every decision Summit makes can be traced back to a specific rule or calculation — not a black box.

Summit detects it automatically and recalculates your plan. This is called plan cascading — skipped sessions, completed sessions, illness, travel, or any change in availability all trigger an automatic adjustment of what comes next.

You'll never be stuck following a plan that stopped making sense three days ago.

Yes. Activities from other disciplines are imported and contribute to your overall training load calculation. Summit accounts for the fatigue they generate.

That said, Summit doesn't structure or analyse non-cycling activities in detail. The training plan is built around cycling. Cross-training is acknowledged, not coached.

For training load calculations, no. Summit uses heart rate and perceived exertion to estimate load when power data isn't available.

For structured workouts, yes for now. Workouts are currently prescribed in power zones (% FTP), so you need a power meter to follow them precisely. Roadmap Heart rate zone prescriptions are coming — this is a known priority.

No. Summit reads HRV, sleep, and recovery data directly from Apple Health, so it works with whatever writes there.

You can skip Apple Health entirely, too: sync Garmin, Whoop or another device through intervals.icu and Summit reads that same wellness data — HRV, resting heart rate, sleep, SpO2 — straight from there instead.

In practice the Apple Watch is the only device that writes the full set Summit uses — heart-rate variability, resting heart rate, sleep, respiratory rate, blood oxygen and overnight wrist temperature. Another wearable gives you a recovery score from what it does write; the Apple Watch gives the complete picture. There is still no Summit watch app: the watch is the sensor, and the iPhone does the reading.

If you do wear one, the parts Summit builds from it — your recovery score and your sleep analysis — are part of the free tier.

Summit adapts your plan from your completed activities, so it needs a way to see them. There are two automatic sources: connect Strava, or — if you ride a Hammerhead Karoo — connect the Karoo directly. Either one imports your rides automatically, so you don't strictly need Strava if your Karoo is connected.

You'll want at least one of them connected — that's how Summit sees your rides and keeps the plan adapting. Strava is the broadest option, since it collects rides from almost any device or app, so it's the recommended choice if you don't ride a Karoo.

For a Hammerhead Karoo, Summit sends structured workouts straight to the head unit over a native, direct connection.

For Garmin, Zwift and MyWhoosh, Summit uses intervals.icu as a distribution hub — one connection reaches all three. You connect each once in Summit's settings, and from then on it's automatic.

Yes — and it's Summit's first direct integration, now a full two-way connection as of v1.2. Structured workouts sync straight to your Karoo, and your completed rides — including your back catalogue — import directly from the head unit over the same native connection. It's the complete flow, just like Strava.

Connect it once in Summit's settings and it runs automatically from then on — no intervals.icu or Strava needed in between.

Yes. When you connect Strava, Summit imports your recent activity history automatically. This gives the engine real data to work with from day one — your eFTP estimation and load baselines are calculated from your actual rides, not from scratch.

Not yet. Summit is iOS-first and available on the App Store now. Android is on the roadmap for 2027, but iOS is the focus for this release.

If you're on Android, follow us on Instagram — we'll share progress and let you know the moment it's ready.

Not in v1.0. Summit is built exclusively for cycling in its first release. Running and swimming support are planned for 2027 — the training engine will expand to multi-sport once the cycling platform is solid.

Summit is free to download, and the free tier isn't a trial: your daily recovery score and your full sleep analysis stay free for as long as you use the app.

Summit Premium adds two tiers: Pro (detailed training analysis — training load, power and per-activity analysis) and Elite (full platform access, including the adaptive plan and new features as they ship, plus priority support).

Pro is €3.99 a month or €24.99 a year (€2.08 a month paid annually); Elite is €9.99 a month or €69.99 a year (€5.83 a month paid annually) — paying yearly saves more than 40% either way. The yearly plans can also be paid monthly on a 12-month commitment: €2.99 a month for Pro (€35.88 in total), €6.99 a month for Elite (€83.88), checked 30 September 2026. These are the Spanish App Store's listed prices in euros, VAT included, checked 17 September 2026 — Apple sets pricing per storefront, so yours may differ. Full breakdown and caveat on the Plans page.

No. If you ride and wear an Apple Watch — or any wearable that writes to Apple Health, or one that syncs through intervals.icu instead, such as Garmin or Whoop — your daily recovery score, your sleep score and the full breakdown behind both are free, for as long as you use Summit. Only the Apple Watch writes the complete set of metrics Summit uses, but another wearable still gives you a score from what it does write.

So is a good deal more: the 30-day recovery trend, the Home and Lock Screen widgets, automatic ride import from Strava, Hammerhead Karoo and Apple Health, and every ride's route map, stats and elevation profile. You can put your races, camps and holidays on the calendar, and see the shape of the day's session — its type, its duration and the training phase you're in. It's the free tier, not a trial that expires. Training load and power analysis, the heart rate and power detail on each ride, and the prescribed session itself are the parts that need Summit Premium.

Yes — Summit is on the App Store now, for iPhone (iOS 26+). Download it, connect Strava, and the plan starts learning you straight away.

It's free to download, with optional Summit Premium tiers.

Yes. Your data belongs to you. You can request an export of your training data at any time, and you can delete your account — and all associated data — directly from within the app.