Comparison

STEX Sync vs 런잇 RUNIT

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

Head to head
About

STEX Sync

Features
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STEX Sync is a pairing app that manages and records personal workout info. 1. STEX Machine & Smartphone Paring * Record personal workout information in STEX Sync by pairing a smartphone with STEX machine. - Enjoy an easy pairing system through the QR code scan. - User can be pairing STEX Sync by selecting STEX machine directly from the list. ▷ After pairing with the STEX machine, set up your workout plan. 2. Workout Setting Menu * Set up and start a workout plan that suits the user’s workout ability and taste. - Select the ‘Quick start’ when the user wants a ‘Free workout’ (non-target setting) - Select the ‘Goal setting’ when the user wants a target setting workout. - Enjoy an exercise program suitable for today's feeling through 'Recommendation'. ▷ Practice your exercise plan consistently through the free workout and goal setting workout. 3. Synchronizing of Set Values and STEX Machine * Set workout goals remotely onto the STEX machine. - Synchronize the workout goal type and 'set value' onto the STEX machine. - Synchronize the 'Cooldown‘ (on/off) setting onto the STEX machine. ▷ After synchronizing the STEX Sync and STEX machine, press the ‘Start button’ to start the workout. 4. Workout Info Indicator * Motivate user by providing workout performance and goal achievement rate. - Check the workout performance(Km/mile, Kcal, min) in real-time. - Check the goal achievement rate in real-time. - Check the cooldown progress in real-time. ▷ Record the workout information performed and achieved. 5. Workout History * Analyze workout performed history to manage correct workout habits. - Visualize(graph) workout history. - Check the records(all, yearly, monthly, weekly) from the start date of workout to the present. - Check the user's preferred (treadmill/bike/elliptical) workout. - Check the workout name and workout location registered in the record. (Modification & change available) - Share the user’s workout history (image or Excel document) with friends. ▷ Establish and practice a more beneficial workout plan by examining the workout history. 6. Bookmark * User can reuse the workout settings satisfied with through the bookmark function. - The user can save the goal types, set values, and cooldown settings in the goal setting workout. - User can save up to 50 settings as bookmarks. ▷ Take advantage of the workout settings bookmark function. 7. Personal information & Setting. * Manage the workout records, bookmark data, Etc, and receive customer support services. - If there are any questions while using STEX Sync, please use the Help & feedback tab. - User can back up and restore workout history and bookmark data to the smartphone's internal storage. - User can reset STEX Sync. (workout history, bookmarks, user information) ▷ If there are any questions, please contact us through the ‘Help & feedback’ menu. We will do our best to provide a better user environment and experience. [Permission required] - Location access permission → required to scan a pairable STEX machine while using the app. - Camera access permission → required to scan the QR code affixed to the STEX machine.

About

런잇 RUNIT

Discover, register for, and manage your running race results all in one place. Track your personal bests, compare your performance with others, and stay updated on upcoming events. Prepare for your next race with this comprehensive running companion.

Highlights
  • Find and register for running races
  • Track personal race records
  • View race rankings and compare with others
  • Stay updated on upcoming race schedules
  • Manage all running event participation
Features
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■ 런잇(Runit) — 러닝 대회의 시작과 끝 전국의 마라톤과 러닝 대회를 한 곳에서 찾고, 접수하고, 기록까지 관리하세요. 대회 신청부터 나의 성적과 랭킹 확인까지, 러너에게 필요한 모든 것을 런잇에 담았습니다. ■ 주요 기능 · 대회 접수 원하는 대회를 검색하고 앱에서 바로 신청하세요. 복잡한 절차 없이 간편하게 참가 신청을 완료할 수 있습니다. · 나의 기록 참가한 대회의 기록을 한눈에 확인하세요. 완주 기록과 페이스를 모아보며 나의 성장을 기록합니다. · 랭킹 대회별 랭킹을 통해 나의 순위와 다른 러너들의 기록을 확인하세요. 다음 목표를 향한 동기부여가 됩니다. · 대회 일정 한눈에 다가오는 대회 정보를 놓치지 마세요. 새로운 대회와 이벤트 소식을 빠르게 받아볼 수 있습니다. 지금 런잇과 함께 다음 대회를 준비하세요.

Screenshots

STEX Sync4 screens
런잇 RUNIT4 screens

Verdict

The call

The clearest difference is update cadence: 런잇 RUNIT at every 3 days against STEX Sync's every 4 months. STEX Sync's advantage is iOS requirement (12.0 vs 15.5). 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

STEX Sync ships an update every 4 months, 런잇 RUNIT every 3 days. The most recent releases landed on September 11, 2026 and September 25, 2026 respectively.

Scorecard2 real differences · 6 level
STEX Sync versus 런잇 RUNIT: the parameters behind the verdict, then further details
ParameterSTEX Sync런잇 RUNIT
PriceFreeFree
Positive reviews—55.2% of reviews
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.5
Further details — not scored
Size18 MB201 MB
Age rating4+4+
DeveloperTaeha Mechatronics Co., Ltd.Runit Co., Ltd

In-app purchases

None

STEX Sync

No in-app purchases

None

런잇 RUNIT

No in-app purchases

Questions

Is STEX Sync free?
STEX Sync is free to download, with no in-app purchases.
Is 런잇 RUNIT free?
런잇 RUNIT is free to download, with no in-app purchases.
Do STEX Sync or 런잇 RUNIT have ads?
Neither STEX Sync nor 런잇 RUNIT shows ads.
Which is updated more often, STEX Sync or 런잇 RUNIT?
STEX Sync ships an update every 4 months, and 런잇 RUNIT every 3 days. Most recently, STEX Sync was updated on September 11, 2026 and 런잇 RUNIT on September 25, 2026.

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