Comparison

FLXBL vs Kaizo

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

Head to head
About

FLXBL

Features
Read full description

Discover new activities and exercise classes where you are! Through FLXBL trainers, instructors and organisers can offer their activities to you directly. Try something new or find what you enjoy. FIND - BOOK - PAY - PARTICIPATE *For clients *No subscription *Find training where you are *The app handles booking / cancellation and payment *Great variety of activities *Pay only for the training you participate in *Show up at the agreed location and join *Book an instructor to give classes for your group of friends, family or colleagues For instructor Through the FLXBL app you can arrange workouts and activities You decide where and when the training will take place You decide the maximum number of participants per class (minimum 3) You can arrange individual trainings or courses that run for several weeks By organizing exercise classes through FLXBL, you collect points which you can exchange for exciting courses and workshops

About

Kaizo

Features
Read full description

Kaizo is an app that allows users to receive workouts, diet plans, and follow-up from their coach. The app serves as a supplement to an external coaching platform where the user already has access. With Kaizo, users can: - View assigned workouts - Track personal goals and log progress - Receive feedback from their trainer - Communicate and keep track of their activities Kaizo is designed to make communication and follow-up between coach and client more organized and accessible.

Screenshots

FLXBL4 screens
Kaizo3 screens

Verdict

The call

The clearest difference is update cadence: Kaizo at every 9 days against FLXBL's monthly. Kaizo also leads on device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

FLXBL ships an update monthly, Kaizo every 9 days. Both last shipped on October 25, 2026.

Scorecard3 real differences · 3 level
FLXBL versus Kaizo: the parameters behind the verdict, then further details
ParameterFLXBLKaizo
PriceFreeFree
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.014.0 — better
Further details — not scored
Size54 MB30 MB
Age rating4+4+
DeveloperFLXBL ASVegard Karlsson

In-app purchases

None

FLXBL

No in-app purchases

None

Kaizo

No in-app purchases

Questions

Is FLXBL free?
FLXBL is free to download, with no in-app purchases.
Is Kaizo free?
Kaizo is free to download, with no in-app purchases.
Do FLXBL or Kaizo have ads?
Neither FLXBL nor Kaizo shows ads.
Which is updated more often, FLXBL or Kaizo?
FLXBL ships an update monthly, and Kaizo every 9 days. Most recently, FLXBL was updated on October 25, 2026 and Kaizo on October 25, 2026.

Other comparisons