Fasting vs Aster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fasting
Easily track your intermittent fasting periods with this app. Adjust your fasting start and end times with simple drag gestures. All your data is stored locally on your device, ensuring privacy and no account creation is necessary.
- Record fasting times
- Adjust start and end times
- View and change fasting history
- No account required
- Local data storage
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Fasting Timer helps you to keep track of your intermittent fasting times. It allows you to easily adjust the start and the end of your fasting with just a single finger drag. You can use Fasting Timer without having to create an account. All the data is yours and stays on your device! Fasting Timer does not advice you to fast. It helps you if you decide this on your own. Please ask your doctor! Features: - Record your fasting times - Easily adjust start and end times - View and change your fasting history - No account or profile is needed - Uses only the local storage on your device Security: Fasting Timer stores your fasting times only locally on your device. Your data is not stored on any third party cloud servers. Therefore you don’t need any separate account / login or any kind of profile to use Fasting Timer. It’s your data. Feedback: If you have any questions or suggestions to improve the app, please use the integrated feedback functionality in our app.
Aster
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You know your pain is real. Aster helps you prove it. People with endometriosis wait years for a diagnosis — and those who feel dismissed by their doctors wait longest. What finally gets someone believed usually isn't a number. It's being able to say what the pain feels like, and what it stopped them doing. Aster records all three. HOW BAD, WHAT KIND, WHAT IT COST A 0–10 scale for intensity. Pain character — cramping, labour-like, burning, squeezing, stabbing, dragging, nerve-like. And how much the episode disrupted your day, from barely to couldn't get out of bed. LOG A FLARE IN SECONDS Built for your worst days: big tappable targets, one-tap symptom and location chips, no typing required. Log from the app, your Lock Screen, or a Home Screen widget. Choose which symptoms appear on your log screen so it stays fast. TRACK WHAT ACTUALLY HAPPENS TO YOU Twenty-three symptoms across thirteen pain locations. Cramps, bloating and endo belly, fatigue, brain fog, nausea, clotting, heavy bleeding, spotting, constipation and diarrhoea tracked separately, bladder urgency and leaking, pain with sex, headache, lightheadedness, mood changes and more — across pelvic, abdominal, lower back, hip, thigh, leg and bowel locations. A REPORT DOCTORS TAKE SERIOUSLY Generate a clean one-page PDF designed around what a clinician needs: average and peak pain, flare days per month, your most frequent symptoms, how pain lines up with your cycle, what it's costing you day to day, and the treatments you've tried. Timestamped, structured, and hard to wave away. SEE YOUR PATTERNS Charts show pain over time, symptom frequency, and how symptoms line up with your cycle — so you spot the patterns before your specialist asks. COMPLETELY PRIVATE No account. No cloud. No tracking. Everything stays on your device, protected by Face ID if you choose. We can't see your data — we built it that way on purpose. FREE VS PREMIUM Logging, cycle tracking, reminders, basic trends and the basic doctor report are free — forever. Premium ($3.99/month or $29.99/year, 1-month free trial) adds cycle-day and phase analysis, custom report ranges, medication effectiveness insights, appointment reminders and unlimited history export. Aster is a symptom record, not medical advice, and it doesn't diagnose anything — only a clinician can do that. Your pain deserves to be on the record, and taken seriously. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Aster at Free against Fasting's $0.99. Fasting's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 17.0). On update cadence, ads and device support 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
Aster is free to download; Fasting costs $0.99 up front. Aster sells 2 in-app purchases, starting at $3.99 per month. Fasting asks for nothing beyond the download.
Fasting ships an update monthly, Aster every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Fasting | Aster |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.5 (2 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 12+ |
| Developer | Christian Kirsch | Gradatim Pty Ltd |
In-app purchases
Fasting
No in-app purchases
Aster
- Aster Premium Monthly7 Days trial$3.991 Month
- Aster Premium Yearly7 Days trial$29.991 Year









