One plan, €3 per month
Splitbook€3 per month
A runner crouched on asphalt, hand on the knee, a black sports watch on the wrist

Polar4Drive

The only Polar-compatible training log that writes every session, by itself, into a Google Sheet you own.

For runners, cyclists and triathletes who wear a Polar watch and keep their own stats.

See a sample
Two runners with sports watches, seen from above on a grey road
A cyclist's legs and pedals in motion beside a concrete wall

A sample of what lands in your Google Drive

Pale grey concrete surface

Sample

Training log 2026
ABCDE
1DateSportTimeKmAvg HR
22026-09-28Running0:48:319.4151
32026-09-30Cycling1:36:5044.1137
42026-10-02Swimming0:45:001.8132
52026-10-04Running1:12:4014.0149
62026-10-06Running0:52:1410.2148

One row per session

Date, sport, duration, distance, average and max heart rate, calories. Each session lands as a new row.

Terracotta floor tiles in sunlight

Sample

Yearly totals 2026
ABCD
1SportSessionsDistanceTime
2Running74812 km71 h 05 m
3Cycling381,640 km62 h 20 m
4Swimming2138 km19 h 10 m
5Total1332,490 km152 h 35 m

Totals by your formulas

Yearly totals by sport, built on the rows with the formulas you already know.

Dense green foliage

Sample

My Drive / Training
  • 2026-10-02
  • 2026-10-04
  • 2026-10-05
    Cycling session, original file

The original file, kept

Each session also saves its original file in a dated folder in your Google Drive.

Matte black studio wall above a glossy red floor

Sample

Distance per month, 2026
JanFebMarAprMayJunJulAugSep

Charts, your way

Draw the charts you want from your own rows. The sheet is yours to shape.

€3per month

One monthly plan

Sync runs for one Polar account into one Google Drive. Sold through NanoCorp's hosted Stripe checkout, with sign-in on the site. No yearly billing, no free trial.

See a sample

Made for the Polar watch on your wrist

How it works

  1. A wrist wearing a black sports watch against blue tiles

    Step 1

    Connect Polar once

    Sign in on the site and link the Polar account your watch syncs to.

  2. A laptop, white running shoes, a water bottle and a sports watch on a linen runner

    Step 2

    Connect Google Drive once

    Pick the Drive that will hold your sheet and your dated folders.

  3. Terracotta floor tiles

    Sample

    Training log 2026

    Date

    2026-10-06

    Sport

    Running

    Duration

    0:52:14

    Distance

    10.2 km

    Avg HR

    148

    Calories

    612

    Step 3

    Finish a session

    The row and the original file land on their own. Nothing to export.

Splitbook

Polar4Drive is not Polar

An independent log for people who wear a Polar watch.

See a sample