BikeFit provides general bike-fit suggestions. It is not a medical device, not a diagnostic tool, and not a substitute for professional advice from a qualified bike fitter, physical therapist, or healthcare provider. If you experience persistent or severe pain, stop riding and consult a professional. The disclaimer in the app reflects the same intent.
Getting started
How do I begin a session?
Open the app and tap Start on the welcome screen. Choose the symptom that's bothering you most. Follow the first adjustment, ride for 10–20 minutes (or longer if you can), then tell the app whether things felt better, worse, or the same. The app will route the next adjustment based on your answer.
Do I need any equipment?
Three small things make every adjustment easier and more accurate:
- A millimeter ruler or tape. Adjustments are measured in millimeters; a ruler with mm markings lets you make a 3 mm change instead of a guess.
- Straight allen keys (not folding). Bike bolts use 4 mm and 5 mm allen keys. Straight L-shaped keys give better leverage and feel for tightness than folding multi-tools.
- A permanent marker or paint pen. Mark the current position of your saddle, cleats, or stem before adjusting. If a change makes things worse, you can return exactly to where you started.
You do not need a tripod, a video camera, a helper, or any measurement device beyond a ruler. BikeFit is designed to work with the basics.
How long does a session take?
The adjustment itself takes 1–2 minutes. The test ride should be 10–20 minutes minimum so you can feel whether the change actually helped. A full session, end to end, is typically 30–45 minutes including the ride.
Using the app
What if no adjustment helps?
BikeFit walks through the most common adjustments a careful fitter would try first. If you've worked through all five steps for your symptom and nothing has improved, the app tells you so and recommends a professional bike fitter or healthcare provider. This is the right outcome, not a failure of the app. Some bike-fit issues require physical assessment that no software can do remotely.
What does "Better / No change / Worse" mean?
- Better: The discomfort decreased noticeably during your test ride. The app stops the session and recommends you keep riding with this change for several rides to confirm.
- No change: You couldn't tell the difference. The app moves to the next adjustment in the sequence.
- Worse: The discomfort increased. The app asks you to undo the last change, then routes to the next adjustment that targets a different axis or direction, never the same one that just made things worse.
Can I go back to a previous adjustment?
The current version walks you forward through the sequence. If you want to revisit a previous adjustment, choose Back to symptom selection and start the symptom flow again. Your session history is recorded so you can see what you tried before.
Are the adjustments specific to road bikes?
The adjustments work for any bike with the relevant adjustable parts: a road bike, a gravel bike, a hybrid, a mountain bike, an indoor trainer setup, or a commuter. The biomechanical principles are the same. The specific saddle-rail geometry or stem mechanism may vary by bike, but the direction and magnitude of the suggested change applies broadly.
Which symptoms are covered?
BikeFit covers the eight most common cycling discomforts:
- Left knee pain
- Right knee pain
- IT-band pain (lateral knee pain that flares on long rides)
- Foot pain or numbness (hot foot, forefoot numbness, arch ache)
- Saddle discomfort
- Hand numbness
- Neck or shoulder pain
- Lower back pain
If yours isn't on that list, like Achilles tendonitis, hip flexor tightness, or calf cramping, email us. Feature requests directly drive what gets added next.
Privacy and data
What data does BikeFit collect?
None. The app collects no personal data, sends nothing to any server, and contains no analytics or tracking. Your session history is stored only on your device. See the full Privacy Policy for details.
How do I delete my session history?
Currently the simplest way is to delete and reinstall the app. We're working on adding an in-app "Reset all data" option in a future update.
Pricing and purchase
How much does the app cost?
$4.99, one-time purchase. No subscription, no in-app purchases, no ads. You buy it once and own it.
Can I get a refund?
Refunds are handled by Apple, not by us. If you'd like a refund, use the Report a Problem page on Apple's site within 90 days of purchase.
Will there be a discount or sale?
Not planned. The price is intentionally low to make the app an easy purchase for any cyclist with discomfort. We may run promotional codes for cycling-community partners. Follow Dan on LinkedIn if you'd like to know when those go out.
Troubleshooting
The app crashes on launch
Try restarting your iPhone. If the crash persists, please email bikefit@dancase.us with your iPhone model and iOS version. Crashes are rare and we treat any report as a top priority.
The disclaimer keeps reappearing on every launch
This usually means iOS is clearing the app's stored preferences, which can happen in low-storage conditions or if you've used "Offload Unused Apps." Make sure you have enough free storage and that BikeFit isn't being offloaded under Settings → General → iPhone Storage.
I have an idea for a feature or new symptom
Email bikefit@dancase.us with your idea. The roadmap is small and informal, and good user requests are how it grows. Adjustments grounded in real cycling biomechanics are especially welcome.
App information
- Current version
- 1.0 (initial release)
- Device
- iPhone 13 or later.
- Languages
- English (US).
- Accessibility
- VoiceOver labels are set throughout. Dynamic Type is supported. If something doesn't feel accessible to you, please report it.
- Developer
- Dan Case, Austin, Texas. dancase.us
- bikefit@dancase.us
Last updated: 2026-05-04