Round Health is the app that popularised reminder windows: instead of nagging you the instant a dose time passes, it reminds you across a window you set. It is simple, free and well loved. Cadence shares that windows philosophy but goes further into insights and health data. Here is an honest look at how the two iPhone apps compare in 2026.
We built Cadence, so weigh this accordingly. Round Health is a genuinely good app, and if you want the simplest possible reminder it may be all you need.
The short answer
Choose Round Health if you want a beautiful, dead-simple reminder with flexible windows and nothing else to think about.
Choose Cadence if you want that same forgiving approach to timing plus real insights, health-metric correlations, supply tracking and a doctor-ready report.
They agree on timing, and that matters
Both apps reject the idea that a dose is either bang on time or a failure. Round Health does this with reminder windows: it nudges you at the start, middle and end of a window up to three hours long until you confirm. Cadence does it with dose windows: a dose taken inside the window still counts as on time, so you are not marked overdue for being a few minutes late. Read more about why dose windows matter.
If forgiving timing is the main thing you want, both apps deliver it. The difference is everything that happens after you log the dose.
Where Round Health is the better choice
- Simplicity. Round Health does one thing, reminders, and does it cleanly. There is very little to learn.
- Free with no upsell. It is free without in-app purchase prompts.
- Birth control pack flow. Round has a specialised flow for birth control packs that some users specifically prefer.
Where Cadence is the better choice
- Insights that act on your data. Round shows your history. Cadence goes further: your adherence rate, your most-missed weekday and time, a dose-share breakdown across medications, and a browsable month-by-month history. See how to read those insights.
- Apple Health correlations. Cadence Pro reads 10 health metrics and shows how your adherence lines up with resting heart rate, blood pressure, sleep and more. Round Health does not connect to your health data.
- Doctor-ready PDF report. Cadence Pro produces an adherence report you can take to an appointment.
- Prescription label scanning to add a medication in seconds.
- Rhythm, not streaks. Round counts streaks, which reset after one missed day. Cadence deliberately counts perfect days and your overall rhythm instead, so a single slip does not wipe your progress.
- No account. Cadence keeps your data on-device with no sign-up. Round offers accounts for backup and sync.
Feature comparison
| Cadence | Round Health | |
|---|---|---|
| Price | Free, Pro $9.99 once | Free |
| Platforms | iPhone, Apple Watch | iPhone, Apple Watch |
| Account required | No | Optional (for sync) |
| Forgiving dose / reminder windows | Yes | Yes |
| As-needed (PRN) support | Yes | Yes |
| Refill reminders | Yes | Yes |
| Adherence insights / patterns | Yes | Basic history |
| Apple Health correlations | Yes (Pro) | No |
| Doctor-ready PDF report | Yes (Pro) | No |
| Prescription label scanning | Yes | No |
The bottom line
Round Health nailed one important idea, forgiving reminder windows, and wrapped it in a lovely, minimal app. If that is all you need, it is a fine choice. Cadence keeps the same respect for real-life timing but adds the layer Round leaves out: insights that tell you where you slip, health correlations that tell you whether it matters, and a report you can act on with your doctor.
For the wider category, see our best medication tracker apps for iPhone guide, or compare Cadence with Apple Health and MyTherapy.
Frequently asked questions
What is the difference between Round Health and Cadence?
Both use forgiving timing windows so a slightly late dose is not treated as a failure. Round Health focuses on simple reminders, while Cadence adds adherence insights, Apple Health correlations, supply tracking and a doctor-ready report.
Is Round Health free?
Yes, Round Health is free without in-app purchase prompts. Cadence is also free for unlimited medications, with an optional one-time $9.99 Pro upgrade for advanced features.
Does Round Health connect to Apple Health metrics?
No. Round Health does not correlate your medication adherence with health metrics. Cadence Pro reads 10 metrics, including heart rate, blood pressure and sleep, and shows them alongside your adherence.
Do both apps support reminder windows?
Yes. Round Health pioneered reminder windows, nudging you across a window up to three hours long. Cadence uses dose windows so a dose taken inside the window still counts as on time.
Which app is better for tracking patterns over time?
Cadence. It surfaces your most-missed weekday and time, a dose-share breakdown and a browsable month history, whereas Round Health offers a simpler historical view.
Cadence is a free medication reminder app for iPhone with unlimited medications and no account required. Cadence Pro is $9.99 as a one-time purchase.
