Comparison

LINK_O vs Chalker

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

Head to head

About

LINK_O

This app simplifies CrossFit box membership registration and class booking. It allows users to manage exercise records, track body composition, and discover local CrossFit events. Stay connected with your fitness community and streamline your gym experience.

Highlights

Quick CrossFit box registration
Instant class reservation
Exercise and WOD record management
Body composition tracking
Event discovery and participation

Features

Read full description

Describe the simplicity of "Link Coach" ● CrossFit Box Registration: Do you register as a member every time? I'm done registering in 5 seconds! ● Class reservation: You can book classes at the gym right away. ● Exercise records management: WOD provided to the gym and Design and record your own exercise. ● Body care: Weight that changes with exercise I can record the body fat percentage. ● Participate in the event: Check out various crossFit competitions every month at a glance and participate. Any time you have a problem or feedback, Please contact help@link-soft.io :)

About

Chalker

Features

Read full description

Chalker 쵸커: 우리 박스의 모든 와드 기록과 랭킹을 한눈에 매일의 땀방울을 기록으로 증명하세요! Chalker는 고강도 기능성 트레이닝(Functional Fitness)을 즐기는 운동인들을 위한 가장 직관적인 와드(WOD) 기록 플랫폼입니다. 주요 기능: 실시간 박스 랭킹: 내가 다니는 박스를 설정하고, 오늘 같은 와드를 수행한 동료들 사이에서 나의 순위를 확인하세요. 정교한 와드 기록: AMRAP, For Time, EMOM 등 다양한 운동 유형을 완벽하게 지원하며, Rx'd와 Scaled 기록을 명확히 구분하여 저장할 수 있습니다. 나만의 운동 일지: 텍스트와 사진을 통해 그날의 컨디션, 보완점, 오운완(오늘 운동 완료)의 감동을 기록하세요. 다크 모드 최적화: 체육관의 거친 환경에서도 눈이 편안한 세련된 다크 모드 인터페이스를 제공합니다. Chalker와 함께라면 어제보다 더 강해진 나를 만날 수 있습니다. 지금 바로 다운로드하고 첫 번째 와드를 기록해보세요!

Screenshots

LINK_O4 screens

Chalker4 screens

Verdict

The call

The clearest difference is update cadence: Chalker at every 3 days against LINK_O's every 8 days. Chalker also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support 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

LINK_O ships an update every 8 days, Chalker every 3 days. The most recent releases landed on October 16, 2026 and September 19, 2026 respectively.

Scorecard2 real differences · 6 level

LINK_O versus Chalker: the parameters behind the verdict, then further details
Parameter	LINK_O	Chalker
Price	Free	Free
Positive reviews	56.0% of reviews	—
Update frequency	Every 8 days	Every 3 days — better
Ads	No	No
In-app purchases	No	No
Monetization	Ad-supported	—
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	15.1	13.0 — better
Further details — not scored
Size	67 MB	20 MB
Age rating	4+	4+
Developer	HIVIS.inc	Eunseo Lee

In-app purchases

None

LINK_O

No in-app purchases

None

Chalker

No in-app purchases

Questions

Is LINK_O free?

LINK_O is free to download, with no in-app purchases.

Is Chalker free?

Chalker is free to download, with no in-app purchases.

Do LINK_O or Chalker have ads?

Neither LINK_O nor Chalker shows ads.

Which is updated more often, LINK_O or Chalker?

LINK_O ships an update every 8 days, and Chalker every 3 days. Most recently, LINK_O was updated on October 16, 2026 and Chalker on September 19, 2026.