Comparison

ONEL1FE vs Book @ TRAIN

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

ONEL1FE

Features

Read full description

Online Coaching Platform for ONEL1FE Clients *Requires paid coaching plan* Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy

About

Book @ TRAIN

Features

Read full description

Guiding you through your health and fitness journey! - Book classes online in just a few clicks - Contact club staff directly - See all the latest club news, offers and events - Refer Friends to the club online Apple Health App Integration Track your progress with our HealthKit app integration to import and measure your daily steps, distance or calories burnt. Also use HealthKit to import your data from a range of different wearable devices.

Screenshots

ONEL1FE3 screens

Book @ TRAIN3 screens

Verdict

The call

The clearest difference is in-app purchases: Book @ TRAIN at none against ONEL1FE's 1. ONEL1FE's advantage is update cadence (monthly vs every 8 months). On price, ads, device support and iOS requirement 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. ONEL1FE sells 1 in-app purchase, starting at $200.00 per month. Book @ TRAIN asks for nothing beyond the download.

UpkeepUpdate frequency

ONEL1FE ships an update monthly, Book @ TRAIN every 8 months. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 4 level

ONEL1FE versus Book @ TRAIN: the parameters behind the verdict, then further details
Parameter	ONEL1FE	Book @ TRAIN
Price	Free	Free
Update frequency	Monthly — better	Every 8 months
Ads	No	No
In-app purchases	Yes	No — better
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0	14.0 — better
Further details — not scored
Size	50 MB	56 MB
Age rating	17+	4+
Developer	Jordan Allen	TeamUp Sports

In-app purchases

1 purchases

ONEL1FE

Subscriptions1

Online Coaching$200.001 Month

None

Book @ TRAIN

No in-app purchases

Questions

Is ONEL1FE free?

ONEL1FE is free to download, with in-app purchases available.

Is Book @ TRAIN free?

Book @ TRAIN is free to download, with no in-app purchases.

Do ONEL1FE or Book @ TRAIN have ads?

Neither ONEL1FE nor Book @ TRAIN shows ads.

Which is updated more often, ONEL1FE or Book @ TRAIN?

ONEL1FE ships an update monthly, and Book @ TRAIN every 8 months. Most recently, ONEL1FE was updated on October 1, 2026 and Book @ TRAIN on September 30, 2026.