Short answer: An app cannot tell you whether you have Achilles pain, and it cannot treat it. What an app can do is help you keep a log, adjust load and stay consistent while you follow the advice of a physiotherapist or doctor.
What running apps can and cannot do
They can: log runs and how your body felt, scale back planned sessions, send reminders, and show how your weekly load has changed. Runna has an easing-off mode, Toga lets you log niggles, and Exakt Health offers physio-style rehab plans for common running injuries, according to its listing.
They cannot: examine you, tell injuries apart, or know what is causing your pain. Pain around the Achilles tendon can have several causes. Only a health professional can sort that out.
Load management: the general idea
- Note how it feels the next morning, not just during the run. That tells you more than the run itself.
- Avoid sudden jumps in hills, speed work or volume.
- Keep a steady level for a while before you add anything.
These are general principles, not a treatment plan. If a physiotherapist has given you a plan, follow that instead.
Apps worth a look
- Exakt Health – step-by-step rehab plans that end with a walk-run return. Paid after a 7-day trial.
- Runna – race plans with a “Not Feeling 100%” mode for easing off.
- Toga – log niggles and the plan adapts. iPhone only.
- Recover Athletics – strength and mobility routines with a body map.
- Garmin Coach – free plans for Garmin owners, with no tools for niggles.
We compared these from store listings and the makers' pages. We have not tried them hands-on.
Common mistakes
- Running through increasing pain because the plan says so.
- Jumping back to full load on the first good day.
- Changing several things at once (shoes, surface, volume), so you cannot tell what mattered.
- Skipping professional advice when it does not settle.
When to see a doctor or physio
See a doctor or physio if you felt a sudden pop or sharp pain, cannot push off, see swelling or a gap in the tendon, or if morning pain and stiffness do not settle. Do not ignore a sudden change. If you take warfarin (Marevan), have lymph cancer or active cancer, a blood clot, an acute infection, heart failure, or severe pain with no known cause, go to a doctor before trying self-treatment.
Our own product
PFU Running Coach is our own product, and we earn money if you use it. It gives you a free plan to race day where you say how your body feels after each run. It has no rehab plan for Achilles pain. See PFU Running Coach. Related reading on PainFreeU: Achilles pain after running? Check the next morning.
Frequently asked questions
Can an app diagnose Achilles pain?
No. Apps cannot examine you. Pain in this area can have several causes, so get it assessed if it does not settle.
Why does it hurt most in the morning?
Morning stiffness is a common pattern with tendon pain, which is why the next-morning check is useful. It is not a diagnosis.
Should I stop running?
That depends on your symptoms. Strong pain, pain that changes your stride, or pain that keeps getting worse is a reason to stop and get advice.
Is PFU Running Coach a rehab app?
No. It gives you a running plan where you log how your body feels, and has no rehab plans for specific injuries.
Sources
Rune Åbø – PT and therapist, has treated 26,000+ people with lymph treatment.
Professional behind PainFreeU. This guide is an editorial overview and gives no diagnosis or treatment.
Last updated: September 30, 2026
Apps in the comparison
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