Bevel vs Helix

The unusual thing about this comparison

Most pages in this category compare a $239-a-year membership to something cheaper. This one does not. Bevel and Helix arrived at the same conclusion independently: the Apple Watch already records everything a recovery score needs, so charging for the score itself is charging for arithmetic you did not perform on hardware you did not sell. Bevel made its core free in December 2025. Helix launched that way.

Which means the interesting question is not what you get for nothing. It is what each company thinks is worth paying for, and those answers are almost completely disjoint.

What Bevel Pro is for

Bevel’s paid tier is a health product. The headline pieces are an AI coach, Apple Health Records integration so clinical documents from your providers sit alongside your wearable data, and a Biological Age estimate. Together those describe a user who wants to understand their health broadly, over years, with a friendly interpreter in front of the numbers.

It is well built. Bevel has a longer track record than Helix, the design is excellent, and the nutrition logging and Strength Builder in the free tier are more than a token gesture. If your question is “how is my health, generally”, Bevel answers it comfortably.

What Helix Pro is for

Helix’s paid tier is a training product, and every feature in it answers some version of “what should I do in the gym or on the road today”.

Training Lab holds a per-muscle fatigue model. Every set you log deposits fatigue on the muscles that exercise targets, drawn from a 173-exercise catalog with involvement weights, and it decays over muscle-specific windows of roughly 40 to 72 hours. Cardio pulled from Apple Health deposits lighter, sport-shaped fatigue. You get a muscle map instead of one body-wide verdict, which is the difference between “you are 62% recovered” and “your hamstrings are not ready and your chest is”.

VO₂max Lab runs an actual protocol rather than reporting Apple’s passive estimate: a GPS-measured Cooper test, guided 4x4 intervals, lactate threshold detection from the deflection in your heart-rate-versus-pace curve, a trajectory with a forecast cone and a goal ETA, and VDOT race predictions.

Bloodwork takes a panel as a PDF, photo or CSV and scores every marker against age and sex specific ranges, with an athletic recovery lens over the ones that shape training. Experiments then lets you target a marker, follow a designed protocol, and see whether your body tracked the predicted response curve.

Energy Schedule maps a circadian energy curve onto today’s actual wake time and adjusts it for recovery, sleep debt, workouts and naps, which is a small feature that changes when people schedule hard sessions.

Two design decisions worth knowing about

No account, no backend. Helix has no server. Scores are computed and stored on the iPhone, there is nothing to sign up for, and the only data that ever leaves the device is a set of anonymised numbers sent to the model provider when you use the AI coach. That has costs: no web dashboard, no syncing between two phones, no cross-device history restore beyond your own backups.

The score is allowed to say it does not know. Helix surfaces a confidence level while your baselines are still building, shows a dash rather than a fake zero for strain on days with no heart-rate data, and labels phone-estimated sleep as an estimate instead of quietly mixing it in with watch-measured nights. Products that always print a confident number are easier to use and harder to trust.

The verdict

If you are still deciding whether an app on your existing watch can replace a strap at all, the wider field is in the best Apple Watch recovery apps, and the mechanics behind these scores are in how recovery scores work.