Comparison

Endorphins Running vs Tether Fit

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

Head to head
About

Endorphins Running

This app provides science-backed, personalized training plans for runners of all levels, from beginners to marathoners. It offers expert coaching, real-time progress tracking, and integrates with popular wearables. Users can also join a large community for in-person training events and support.

Highlights
  • Personalized adaptive training plans
  • Real-time progress tracking
  • Expert coaching and support
  • 1500+ community events
  • Wearable device integration
  • Strength and recovery programs
Features
Read full description

Reach your next finish line with Endorphins — the top-rated training app powered by science, built by world-class coaches, and backed by the largest run community in the country. Whether you’re running your first 5K or chasing a Boston Qualifier, Endorphins gives you personalized plans, real-time progress tracking, expert coaching, and an in person community of 1500 events to help get you there. WHY THOUSANDS OF RUNNERS RUN & TRAIN WITH ENDORPHINS: 1) Personalized Coaching Plans We build your training plan around you—your pace, your race, your goals. Whether it's a 5K, 10K, half, full, or ultra, your plan adapts as you go. 2) 1500 Community Events A Year Train with other runners who share the same goals as you 3) Train Smarter with Wearables Sync your Garmin, COROS, or Strava to track runs in real time. We use your data to adjust your plan and optimize every workout. 4) Strength + Recovery Built In Our strength programs compliment your running schedule for optimal improvements and gains. 5) Real Coaches. Real Results. Our team has trained thousands of runners—from first-timers to sub-elites. You’re never more than a message away from expert support. JOIN THE LARGEST RUN COMMUNITY IN AMERICA: 1) In-Person Energy We host 1,500+ free group runs a year in 12+ cities. From long runs to shakeouts, connect with others who share the same goals and values as you. 2) Community Benefits Endorphins members get access to drops, exclusive partner benefits, and race-weekend events. 3) Track Progress + Stay Accountable From weekly goals to post-run recaps, we keep you on track and connected to your training—day in, day out. 4) Built to Grow With You As your goals evolve, so does your training. Whether you’re starting from scratch or going sub-3, we’ve got the plan. PLANS FOR EVERY GOAL: First-time 5K to your next marathon PR Strength + mobility for runners Recovery programs post-race or post-injury And more, always evolving COMPATIBLE WITH: Garmin, COROS, Strava, and more. ENDORPHINS PREMIUM: Unlock the full experience with a 7-day free trial. Train smarter with adaptive plans, real-time sync, and exclusive coaching content. $20/month or $120/year — cancel anytime. Subscriptions auto-renew. Manage in your iTunes settings. APPLE HEALTH INTEGRATION: Endorphins uses your health data for accurate heart rate, distance, and pace tracking when using Apple Watch. 18+ ONLY: Endorphins is for adults 18+. Accounts may be removed if underage use is detected. Apple's standard license agreement applies to Endorphins Premium purchases: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Tether Fit

This app transforms solo workouts into shared experiences by allowing users to log and share their fitness sessions with a community. It helps users track progress, discover new workouts, and find motivation through social interaction and accountability.

Highlights
  • Fast and easy workout logging
  • Progress monitoring over time
  • Workout template creation
  • Import workouts from files/images
  • Follow and perform community workouts
  • Social accountability through likes/comments
Features
Read full description

Track your workouts, share your progress, and train with friends. Save your favorite routines or try a workout from someone you follow. Tether is the fitness app that turns working out alone into working out together. Log your sessions and share them with your community. When effort is recognized, progress follows. Whether you're brand new to the gym or a veteran stuck on a plateau, Tether connects you to people worth following. Perform their workouts, borrow their momentum, and give some of yours back. TRACK EVERYTHING - Log your workouts with fast, easy tracking - Monitor your progress over time and watch the work add up - Create templates for quick reuse of your go-to sessions - Repeat any workout you've already done in a couple of taps - Import workouts from files or images to bring your old logs with you NEVER TRAIN ALONE - New to fitness? Follow someone with more experience, perform their workouts, and pick up their tips and insights. Skip the awkward "What are you doing to look like that?" conversation - Feeling plateaued or uninspired? Borrow a session from someone further ahead and find your spark again - Coaching or leading the way? Grow your community on Tether. Inspire and guide your followers - Feel like you're training with your community even when you might physically be alone EFFORT RECOGNIZED - Every session you post is proof you showed up - Progress through accountability: likes and comments that actually mean something - Encourage others to keep going and get that energy right back Fitness is better when you are your community are all in it together. Download Tether. Put the work in. Grow with others. Get it recognized.

Screenshots

Endorphins Running4 screens
Tether Fit4 screens

Verdict

The call

The clearest difference is in-app purchases: Tether Fit at none against Endorphins Running's 4. Endorphins Running's advantage is ads (none vs shown) and ratings volume (879 vs 5). On price, rating, review sentiment and update cadence 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. Endorphins Running sells 4 in-app purchases, starting at $19.99 per month. Tether Fit asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Endorphins Running against 5.0 for Tether Fit. That said, the two scores are not equally well evidenced: Endorphins Running has 879 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 99% of Endorphins Running's written reviews are positive against 100% of Tether Fit's.

UpkeepUpdate frequency

Endorphins Running ships an update every 2 weeks, Tether Fit weekly. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
Endorphins Running versus Tether Fit: the parameters behind the verdict, then further details
ParameterEndorphins RunningTether Fit
PriceFreeFree
Rating4.9 (879 ratings)5.0 (5 ratings) — better
Positive reviews98.6% of reviews100.0% of reviews — better
Number of ratings879 — better5
Update frequencyEvery 2 weeksWeekly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemiumAd-supported — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS16.415.1 — better
Further details — not scored
Size177 MB51 MB
Age rating12+4+
DeveloperEndorphins Running LLCCam Brannelly

Customer experience

Endorphins Running

All ratings879 ratings
Positive98.6%
Neutral0.1%
Negative1.3%
Written reviews418 reviews
Positive98.6%
Neutral0.2%
Negative1.2%

Tether Fit

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Endorphins Running

Subscriptions4
  • Monthly7 Days trial$19.991 Month
  • Monthly$19.991 Month
  • Yearly7 Days trial$119.991 Year
Show 1 more
  • Yearly$119.991 Year
None

Tether Fit

No in-app purchases

Questions

Is Endorphins Running free?
Endorphins Running is free to download, with in-app purchases available.
Is Tether Fit free?
Tether Fit is free to download, with no in-app purchases.
Which has better reviews, Endorphins Running or Tether Fit?
Tether Fit is rated higher. Endorphins Running averages 4.9 out of 5 from 879 ratings, while Tether Fit averages 5.0 from 5 ratings.
Do Endorphins Running or Tether Fit have ads?
Tether Fit shows ads; Endorphins Running does not.
Which is updated more often, Endorphins Running or Tether Fit?
Endorphins Running ships an update every 2 weeks, and Tether Fit weekly. Most recently, Endorphins Running was updated on October 17, 2026 and Tether Fit on October 8, 2026.

Other comparisons