Symptom Log vs Plotsy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Symptom Log
This app helps individuals manage chronic conditions by logging daily symptoms, moods, and potential triggers. It provides insights into trends and allows for easy sharing of health data with doctors. The app focuses on private, on-device storage for user peace of mind.
- Daily symptom logging
- Mood tracking
- Trigger identification
- Doctor reports (PDF)
- Data export (CSV)
- Customizable symptom list
- On-device data storage
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SymptomLog is a private daily diary for one person living with one long-term condition. Log how the day actually went in under a minute, then show your doctor a record instead of trying to remember. At setup you choose your condition — migraine, IBS and gut health, autoimmune, fibromyalgia, chronic pain, endometriosis, allergies, mental health, or something else — and your starting symptom list is built around it. WHAT ONE DAY LOOKS LIKE Tap the quick-log card on the home screen. Pick one of five moods, from Terrible to Great. Slide each symptom you track from 0 to 10. Tap anything that may have played a part: poor sleep, stress, weather change, a certain food, alcohol, exercise, a missed dose, menstrual cycle, dehydration, overexertion, travel, illness. Add a note if you want one, then save. That's the whole thing. The home screen shows your logging streak, your total days logged, and a week-at-a-glance strip, so you can see which days you missed and go back and fill them in. An optional reminder at a time you choose nudges you once a day. IT STAYS ON YOUR PHONE There's no account, no sign-up and no cloud sync. Your entries are stored on this device — no copy sits on a server, and nobody else can open your log. PREMIUM: TURN THE LOG INTO AN ANSWER • See the shape of it — trend lines, a severity breakdown, a calendar heatmap and your mood distribution across 7, 30 or 90 days. • Check your triggers — a frequency chart showing which triggers you tapped most over the period you chose. • Hand your doctor something readable — a full Doctor Report as a PDF, a single-symptom report, or a side-by-side comparison of two date ranges. • Keep the raw numbers — export everything as a CSV file. • Track what you actually have — add, remove and reorder your own symptoms. • Look back a full year instead of 30 days. You get a few minutes with your doctor. Spend them on the conversation, not on reconstructing the last three months out loud. GETTING STARTED Setup takes about a minute: choose your condition, choose the symptoms you want to start with, set a reminder if you'd like one. Daily logging and the last 30 days of history are included at no cost. Premium is available weekly or yearly, or as a one-time Lifetime purchase, whenever the charts and reports are worth it to you. The weekly and yearly plans are auto-renewing subscriptions, charged to your Apple ID at confirmation of purchase and renewing unless canceled at least 24 hours before the current period ends. Manage or cancel anytime in your account settings. A trial is offered on a plan only when your account is eligible for one. Lifetime is a single purchase with no recurring charge. Current prices are shown on the plan screen in your local currency. Terms of Use: https://sites.google.com/view/symptom-log/eula?authuser=0 Privacy Policy: https://sites.google.com/view/symptom-log/privacy-policy?authuser=0 SymptomLog is a personal tracking tool. It does not diagnose, treat or provide medical advice — always speak to a qualified healthcare professional about your health.
Plotsy
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Track pain, symptoms, triggers and meds — a calm, private journal for your own records. Logging is free forever, offline, with no account and no ads. Plotsy is not a medical device and does not diagnose, treat, or give medical advice. Hate subscription tricks? So do we. Everything you log stays free forever — unlimited entries, the full symptom & condition library, charts, reminders, and JSON backup. Plotsy Pro adds doctor-ready exports and deeper charts — and if you prefer to pay once, the Lifetime unlock is yours forever. No subscription required. WHAT YOU CAN LOG • Symptoms & pain on a simple 0–10 scale, with pain-quality tags and an interactive body map • Triggers — food, weather, sleep, stress, hormones and more • Medications you take, with optional "did it help?" notes • Daily mood, sleep, energy and wellbeing • Flare-ups as named periods, to see the rough stretches at a glance BUILT FOR A ROUGH DAY • Big, one-handed quick-log — record "headache, 7/10" in seconds • "Repeat last day" for when you have no energy • Calm, warm design — no harsh white, no alarm-red, no clutter • Full Dynamic Type, VoiceOver and Reduce Motion support SEE YOUR OWN PATTERNS • Trends for severity, mood, sleep and energy • A body heat-map of where things show up • Plain-language observations from your own records (never a diagnosis) • 7 / 30 / 90-day summaries PLOTSY PRO • Doctor report (PDF) — a formatted summary of your notes to print or share at appointments • CSV export of every record for your own analysis • Deeper charts: the day-by-day heatmap and side-by-side patterns of what you logged • Your full history in charts, not just the last 30 days • Accent color themes to make Plotsy yours • Monthly or yearly (with a 3-day free trial) — or a one-time Lifetime purchase, yours forever PRIVATE BY DESIGN • Everything stays on your device. No account, no cloud by default, no ads, no trackers. • Optional Face ID lock. • Available in 40 languages. Plotsy keeps your records organized and ready to share — calmly, privately, and in your language. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Payment is charged to your Apple Account; manage or cancel anytime in Settings. Terms of Use: https://sites.google.com/view/plotsy/terms Privacy Policy: https://sites.google.com/view/plotsy/privacy Plotsy is a personal journal for your own records. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional. In an emergency, call your local emergency number.
Screenshots
Verdict
The clearest difference is iOS requirement: Symptom Log at 15.0 against Plotsy's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Symptom Log sells 3 in-app purchases, starting at $2.99 per 7 days and Plotsy sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | Symptom Log | Plotsy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 43 MB | 9 MB |
| Age rating | 17+ | 4+ |
| Developer | AlgoSoft Technologies Limited | Serhii Tykhonenko |
In-app purchases
Symptom Log
- Weekly Plan$2.997 Days
- Annual Plan3 Days trial$39.991 Year
- Lifetime$89.99
Plotsy
- Pro Monthly$4.991 Month
- Pro Yearly3 Days trial$29.991 Year
- Pro Lifetime$59.99









