# Fitter - Bike — user reviews

> 30 indexed App Store user reviews of Fitter by Jongheon Lee, rated 4.70/5 from 67 ratings.

- Source: https://appshunter.io/ios/app/fitter-bike/id1528225944/reviews
- App overview in markdown: https://appshunter.io/ios/app/fitter-bike/id1528225944.md
- Rating breakdown: 5★ 57 · 4★ 4 · 3★ 3 · 2★ 0 · 1★ 3

## Newest reviews (10 of 30)

### 3/5 — Wouldn’t work

*2025-03-04*

Every time I tried to take a photo or video it produced an error stating there could only be one person in the frame even though that’s all there was. Changing location didn’t help either.
Edit: started working, not sure what changed

**Developer response:** Thank you for your feedback, and we’re sorry for the trouble you experienced earlier. The message about multiple people can sometimes appear due to lighting conditions, shadows, or background elements that the system might misinterpret.

We’re glad to hear it’s working now! If the issue happens again, please feel free to contact our support team — we’re always here to help ensure the best experience.

### 4/5 — Coole App, mehr Info wäre super

*2024-11-07, version 1.4.0*

Eine ziemlich coole und einfache App. Die Kobelposition oben und unten wird nicht immer exakt erkannt, da wäre ein Tool gut, um die entsprechenden Frames auszuwählen. Zudem wäre eine Information um wie viel Zentimeter man den Sattel hoch oder runter versetzen sollte, gut. Sonst eine gute App

### 3/5 — It’s OK

*2022-12-19*

The app seems to struggle finding when the crank is level for the saddle for and aft. I believe this is due to needing great lighting. Also at regular cadence or higher the ball of foot is hard to determine due to blur. We added a piece of tape to shoe to help. The Ad watching is annoying as well. Well actually there isn’t an ad so it’s just a blank screen while you wait.  

Basically it could be great with some minor tweaks.

### 1/5 — It’s broken.

*2022-05-20, version 1.1.7*

This app touch system is broken.

I do not recommend this app.

### 1/5 — Incomplete

*2022-01-22*

It will tell you to move seat up or down but not much else.  It has identified that my angles are off but offers no suggestions on what to do about it. This is the case even with the paid version.

### 1/5 — Doesn't work

*2021-04-04*

Tried using the motion capture. The app just gets stuck on "analyzing".

### 5/5 — 정말 훌륭한 앱!

*2021-03-13, version 1.1.2*

자전거 피팅이라는게 어느정도는 셀프로 하다가 막히는 순간이 옵니다. 결국 돈 내고 피팅을 한번 받아보려고 검색하다보면 평가가 엇갈리죠. 주변에서는 오히려 불편해졌다는 얘기도 나오고요. 피터앱은 사용법도 직관적이고, 간단하고, 결과도 바로 볼 수 있느니 정말 좋은 것 같습니다. 처음에는 안장 높이만 되었는데 이제는 여러군데 각도도 나오네요. 아무래도 표준 각도나 범위의 피팅을 하기에 백프로 맞지 않을 수 있겠지만 좋은 참고 기준이 될 것 같습니다. 좋은 앱 만들어주셔서 감사하고, 앞으로 더욱 발전하여 더 많은 데이터 분석이 가능하면 좋을 것 같습니다!

### 5/5 — 엄청 유용한 앱이 될꺼같아요.

*2020-12-16, version 1.0.1*

관절마다 인식도 잘 되고 너무 유용한 앱인데 전 이상하게 안장을 16cm올리라고 나오네요. 그럼 너~~무 높을텐데.
다시하니 이번엔 13cm 또 다시하니 11cm.
제가 설정을 잘 못한걸까요?

### 5/5 — 잘쓰고 있습니다

*2020-12-04, version 1.0.1*

상세 분석이 빨리 나왔으면 좋겠네요 다른 관절은 잘 잡는데 발목이 좀 다르네요 발바닥 찍을때 발목도 수정 가능했으면 좋겠습니다

### 5/5 — 좋아요!!

*2020-10-29, version 1.0*

따릉이 탈 때 사용했는데 편하네용

## Most critical reviews (10 lowest-rated)

### 1/5 — Не работает

*2025-07-11*

Покупка либо просмотр видео которое не грузит

### 1/5 — 카메라 인식안됨 카메라 허용해도 그럼 작동도 안됨

*2025-06-24, version 1.4.1*

이상함

### 1/5 — 使えない

*2025-04-28, version 1.4.1*

足首の角度を作れとか言われても無理　
膝の位置はもっと無理
マーカーが色んな所に移動する
バイクフィットエリートのが全然使える

### 1/5 — Bike fit does not give feedback

*2025-04-21, version 1.4.1*

Disappointed!  Does a video analysis and then gets stuck in a loop asking you to spay when you already have!  Tried to start again, says I have a fit available does the video click next step and asks you to pay!  I ALREADY HAVE!!!

### 1/5 — Wouldn’t work

*2025-03-02*

Every time I tried to take a photo or video it produced an error stating there could only be one person in the frame even though that’s all there was. Changing location didn’t help either

### 1/5 — Doesn’t work

*2024-03-27*

Tried photo and motion capture, but the points where the hip and ankle are were off, which I imagine would throw everything else off.
Just recommends lowering saddle, without regard for stem length or height, good idea but bad execution. Don’t use this app to adjust your fit!
I recommend Wrenchscience.com fit calculator, much more reliable and it’s free!

### 1/5 — Totaler Schwachsinn

*2023-12-11, version 1.1.8*

Alle Einstellungen habe ich genau nach Vorgabe durchgeführt. Die App hat den Sattel dermaßen tief einstellen lassen, dass ich davon nach nur wenigen Pedalumdrehungen tief sitzende Knieschmerzen bekam. Zudem war der Lenker am Ende höher als der Sattel. Eine endgültige Sattelposition war durch die App nie abschließend einzustellen. Wenn der Sattel zu tief war, sollte er höher eingestellt werden. Wenn er dann höher war, sollte er wieder tiefer eingestellt werden. Nach X versuchen habe ich dann letztenendes aufgegeben. Hab’s dann mit einer anderen App versucht, welche für sechs Euro im Jahr sehr übersichtlich bei den Kosten ist. Damit war es dann im Hand umdrehen und nachvollziehbar möglich mein Rad ordentlich einzustellen.

### 1/5 — 동영상 결제했더니 인식하고선 분석 넘어가면 이상함

*2023-09-24, version 1.1.8*

사진을 못올리네요
영상 결제했더니
불러오기 정상으로 되는데
클릿페달 하단 선택하는 화면 넘어가면
터치 포인트 이상해지고
인식한 관절도 갑자기 작아짐. 
레티나 지원이 갑자기 안되는 그런 느낌??
개발자분 연락처 주시면 피드백 드리겠으니 연락 바랍니다

### 1/5 — Video uploaded and unable to get any further

*2022-09-21, version 1.1.8*

When asked to point out where the widest part of the foot is, wherever you tap puts your line in the wrong position.

### 1/5 — 다좋은데 광고시청시 앱 꺼져버림

*2022-06-09, version 1.1.7*

옷입고 스티커 붙이고 자전거 세팅하고
다 준비하고 촬영후 광고시청후 분석보기 클릭하면 앱이 꺼져버리네요.
모션, 사진 기능 둘다 에러납니다.
혹시나 결제할려니 그래도 안되면 돈만 날리게 되니 안하게 되네요.
고쳐 주시면 감사하겠습니다.

## Most praised reviews (10 highest-rated)

### 5/5 — 광고주들 얼른 들어오셈

*2024-05-07, version 1.1.8*

이거슨 혁명이다

### 5/5 — Genial

*2024-04-15*

Excelente app para fittings

### 5/5 — Easy and helpful

*2024-03-18*

Awesome app for figuring out the best seat height!

### 5/5 — 발목 골반 등 지정은 안되나요?

*2023-04-19, version 1.1.8*

관절에 표시해놓고 확인하고 있는데
지정해주는곳이 영상 여러개로 해보면 엉뚱해서 확인이제대로 안되는데
리뷰보니깐 아직 개선 안된것 같은데 업데이트 계획은 없으신가요?

### 5/5 — Easy and helpful

*2023-02-12, version 1.1.8*

Cool app!
Calculates angels quite precisely and the interface is very easy.
But I miss the feature to upload already filmed video or photo.

### 5/5 — 좋은 앱입니다

*2022-10-09, version 1.1.8*

정말 편하고 좋은 앱인데, 프로버전을 구매할수가 없나보네요.? 아.. 동영상불러오기에서 결재가 가능하군요.
상세분석에서 광고없이 보는 프로버전구매는 안되네요. 어쨌든 결재했습니다. ㅎ

### 5/5 — Watching Ad to see analysis causes crash

*2022-09-10*

UPDATED REVIEW: Upon discussing the crash problem with the developer, he fixed the problem very soon. And upon further discussion about the aligning guide of the app he helped me to understand the correct setup and said that hopefully he will fix that in the near future as well. Now it’s highly recommended.

~~~~~~

ORIGINAL REVIEW: Seems like a decent app, only problem is that when trying to see the detailed analysis by watching an advertisement, the app crashes. Also another thing that is confusing is alignment of the camera. When set at 2.5m from the bike and camera at handlebars’ height, like the instructions suggest, the bike frame guide won’t align with the bike and the camera has to be lowered and set farther away, for the guide to line up with the bike frame. Device used is iPhone SE 2nd generation running on iOS 15.6.1.

**Developer response:** i resolved the crash problem and will fix the guide asap
Thank you for feedback

### 5/5 — recommend

*2021-12-29*

This app is the most helpful app I have ever used when it comes to bicycle fitting. I ran to my neighborhood uphill and could feel the difference right away. 

This app uses machine learning feature of iOS and shows all major angles of your body when your crank is 12:00, 3:00 and 6:00 position. Funny thing is that I thought my saddle height was a bit low but app showed it was actually too high. Same thing with my stem length. I thought it was a tad long and it turned out to be a bit short. 

Just to know the idea in my head were all wrong made me feel grateful and purchase the “pro” version which removes ads.

### 5/5 — I purchased “pro” version without hesitation.

*2021-06-18, version 1.1.7*

This app is the most helpful app I have ever used when it comes to bicycle fitting. I ran to my neighborhood uphill and could feel the difference right away. 

This app uses machine learning feature of iOS and shows all major angles of your body when your crank is 12:00, 3:00 and 6:00 position. Funny thing is that I thought my saddle height was a bit low but app showed it was actually too high. Same thing with my stem length. I thought it was a tad long and it turned out to be a bit short. 

Just to know the idea in my head were all wrong made me feel grateful and purchase the “pro” version which removes ads.

### 5/5 — ❤️

*2021-03-22, version 1.1.6*

좋아용💜

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*