OvaCue vs Synka
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
OvaCue
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OvaCue helps people who are trying to conceive understand todayβs timing without sorting through scattered notes. Log the minimum signals that matter: last period, cycle length, ovulation test, basal temperature, cervical mucus, intercourse timing, sleep, and stress. OvaCue estimates the ovulation date, highlights the fertile window, calculates a daily timing score, and turns the result into a polished shareable card. AI advice is concise and practical. It gives one non-diagnostic action for today, such as when to test again or how to keep timing consistent. OvaCue is for fertility tracking and general wellness reference only. It is not a medical device and does not replace professional medical advice.
Synka
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You don't stop at the first setback when you have a goal. Synka fits your training to your body, and when an injury comes, your physio takes over your plan: the goal stays in sight. IT'S NOT THE MILES, IT'S THE SPIKES 4 runners in 10 get injured while training for a race. Most training mistakes are sudden jumps: a long run much longer than anything you did this month, two hard sessions in a row, a comeback that starts too fast. Synka builds your plan to race day and smooths those jumps out to reduce the risk, week after week. A PLAN THAT FOLLOWS YOUR BODY Ten seconds each morning: energy, pain, period. Your heart rate variability, resting heart rate and how you feel decide today's session: tired, the hard session gets easier or moves to a better day. Short on time? Say how many minutes you have and Synka builds a session that fits. Took a break? The plan eases you back in, based on how long it lasted. INJURED? YOUR PHYSIO TAKES OVER Log your pain: Synka tracks it every morning and after every run, and guides you through a step-by-step return, from walking back to your plan. If a physio follows you, they set up your return from their free web space, see your pain and your runs between visits, and their limits come before everything else in the plan. No physio? The return works on its own, and the app can help you find one. YOUR CYCLE, ONE MORE LEVER For runners who track it, Synka learns which phases cost you more and places hard sessions on your best days: it moves them, it never waters them down. On hormonal contraception or without cycle tracking, the plan works exactly the same. EVERYTHING A PREP NEEDS From 5k to marathon, one to seven runs a week, a run-walk start for beginners. Intervals, threshold, tempo, long runs, lighter weeks, guided strength work. GPS runs with voice-guided pace, your run on the lock screen, sessions sent to your watch: Apple Watch, COROS, Suunto, and your Garmin runs through Apple Health. SEE YOURSELF PROGRESS Your paces are set on your measured level, not on a wish. Synka shows the race time you can aim for, your VO2max pace (with a 6-minute test when it gets stale), your freshness and your pace at the same heart rate. No watch? Everything works by feel. HONEST Every change to your plan comes with its reason, in "What moved". No made-up numbers, no ads, no tracking, no in-app purchase. Delete your account and all your data from the app, immediately. Synka is not a medical device and does not replace medical advice.
Screenshots
Verdict
The clearest difference is device support: Synka at 3 against OvaCue's 1. Synka also leads on iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | OvaCue | Synka |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPod, Apple Watch β better |
| Requires iOS | 17.0 | 15.1 β better |
| Further details β not scored | ||
| Size | 3 MB | 72 MB |
| Age rating | 9+ | 4+ |
| Developer | Shanxi Jinshangxing Technology Co., Ltd | Arthur Tornqvist |
In-app purchases
OvaCue
No in-app purchases
Synka
No in-app purchases









