CatAche Diary vs SymptomLog
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
CatAche Diary
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A cat can't cure your headache โ but it might just make it easier to bear. CatAche is a simple, friendly headache diary that helps you log and track your headache episodes โ so you can start to understand your patterns and take back control. No sign-up. No account. No fuss. Just you, your data, and a cat who cares. Use it for free for logging 10 episodes. If you like the app, upgrade to Premium and get unlimited episodes. What you can do: โข Log headache episodes quickly and easily โข Record the date and details of each episode โข Track your history over time โข Spot patterns to better understand your headaches Why CatAche? Headaches are no fun โ but your diary doesn't have to be miserable. CatAche brings a little feline warmth to an otherwise frustrating experience. Because cats make everything better. ? Your privacy, always: All your data stays on your device. Nothing is sent anywhere, ever. Simple. Private. A little bit cat-shaped. Download CatAche and start understanding your headaches today. CatAche is a personal tracking tool and does not provide medical advice.
SymptomLog
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Log every symptom, flare, medication, and trigger in under 5 seconds โ no setup overwhelm, no freezing, no blank screen when you feel worst. Built for lupus, fibromyalgia, CFS, POTS, endometriosis, and all autoimmune conditions. Analytics show your trigger patterns and help you prepare for appointments. Track sleep alongside symptoms. Export a full health timeline to share with your doctor. Not just a diary โ an analytical engine that works on your worst days. Terms of Use: https://docs.google.com/document/d/e/2PACX-1vQdEtKDnCjuEDWelsB_wM-TjZAkXYh9ySPqfApocJcf4VjOaZX7NLnHqF0K46oGEhyfIsls3yvEDiPN/pub
Screenshots
Verdict
The clearest difference is ads: CatAche Diary at none against SymptomLog's shown. CatAche Diary also leads on iOS requirement (13.0 vs 17.6). SymptomLog's advantage is update cadence (every 2 days vs every 4 days). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. CatAche Diary sells 1 one-off in-app purchase and SymptomLog sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
CatAche Diary ships an update every 4 days, SymptomLog every 2 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | CatAche Diary | SymptomLog |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | Every 2 days โ better |
| Ads | No โ better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.6 |
| Further details โ not scored | ||
| Size | 27 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefanus van de Wetering | Sajith Lal m k |
In-app purchases
CatAche Diary
- Premium Upgrade$1.99
SymptomLog
- SymptomLog Monthly7 Days trial$2.991 Month
- SymptomLog Annual7 Days trial$14.991 Year
- SymptomLog Lifetime$24.99
Questions
Is CatAche Diary free?
Is SymptomLog free?
Do CatAche Diary or SymptomLog have ads?
Which is updated more often, CatAche Diary or SymptomLog?
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