Shindo vs Intervals.icu

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The short answer#

Intervals.icu is the best free training analysis platform in existence, and if you enjoy digging through your own data you should be using it regardless of what else you run. It costs nothing, it is not trying to upsell you, and its depth is genuinely remarkable.

Shindo is for the other kind of athlete — the one who does not want to open a dashboard, and wants the answer instead of the data.

What each one is#

Intervals.icu is a browser-based training platform, free for everyone with no card required and an optional $4/month supporter tier. The free tier includes fitness and fatigue modelling (CTL, ATL, TSB), the power-duration curve, automatic interval detection, the calendar, a workout builder, custom charts and sync with Garmin, Wahoo and Strava. The supporter tier adds weather analysis, an annual plan builder, full Strava history import and fully custom zones. There is a companion iOS app.

Shindo is an iPhone app that reads Apple Health, computes a readiness score with its drivers, models training load per sport, generates and adapts a weekly plan, and writes a morning report explaining the day in words.

Where they differ#

Pricing checked 2026-08-29 against each vendor’s public pricing page.

Being straightforward about the value question#

Intervals.icu is free and does the analytical half better than Shindo does. That is not a concession made reluctantly — it is the accurate statement, and any comparison that implied otherwise would be worthless to you.

What Shindo sells is not more numbers. It is the removal of the step where you have to interpret them. Intervals.icu will show you that your form is −28 and your ramp is steep; you decide what to do about it. Shindo decides, tells you what it decided, and shows the drivers so you can overrule it.

Whether that is worth a subscription depends on one thing: whether you enjoy the interpretation step. A lot of cyclists genuinely do, and for them Shindo is solving a problem they do not have.

When Intervals.icu is the better choice#

• You like analysis. This is the whole of it. If opening a dashboard is a pleasure rather than a chore, Intervals.icu is a better product for you than Shindo.
• You want a large screen. Serious data work on a phone is a compromise.
• You are a cyclist with a power meter and want the full power-duration curve, interval detection and custom charts.
• You are on Android, or want platform independence.
• Budget is decisive. It is free, permanently, and not a trial.
• You want to build your own workouts in detail and control every field.

When Shindo fits better#

• You want a decision rather than a dashboard.
• You want a readiness score that combines recovery signals with training load.
• You want the plan generated and maintained for you, and re-flowed when you miss.
• You want fuelling targets attached to the training you did.
• You are on an iPhone and want everything computed on the device with no account.

Running both#

They coexist well and this is arguably the strongest setup on this page: Intervals.icu for deep retrospective analysis on a large screen, Shindo on the phone for the daily decision. Shindo reads Apple Health and Intervals.icu reads Garmin, Wahoo and Strava, so neither interferes with the other.

Claims about Intervals.icu were checked against its public pages on the date shown above and are not warranted to stay current — pricing and features change without notice, and the vendor's own site is authoritative. Shindo is not affiliated with, endorsed by or sponsored by Intervals.icu. Product names are used only to identify the products discussed. Found something out of date? Tell us and it gets corrected.

Read next

Shindo is free on the App Store — readiness, the weekly plan and the load charts need no subscription.