SLIT Support vs Petal
Price, ratings, monetisation and update history for both apps, side by side â with what reviewers say about each.
SLIT Support
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SLIT Support is a daily dose logging, timer, and reminder app for people continuing sublingual immunotherapy (SLIT). With one-tap dose logs, 1- and 5-minute timers, daily reminders, symptom notes, and calendar review, you can keep your SLIT routine organized in one place. This app is designed to help people continuing sublingual immunotherapy for cedar pollen allergy, dust mite allergy, and other allergy treatments reduce missed doses and review daily dose records and condition changes. What you can do: - Log your daily dose with one tap - Use 1- and 5-minute timers with completion notifications - Set daily dose reminders - Record symptoms, condition, and notes - Review dose days and records on a calendar - Check your current streak and total recorded days Premium Plan: - Separate dose records for dust mite and cedar pollen treatment - Monthly reports for past dose records and symptoms - Day-of-week reminder settings - Extended note limits - Ad removal - Theme color, dark mode, and other customization options Recommended for people who: - Are starting sublingual immunotherapy and want to build a daily routine - Want to manage the 1- or 5-minute waiting time after each dose - Want to reduce missed doses - Want to review dose records and condition changes on a calendar - Want to keep track of SLIT for cedar pollen allergy or dust mite allergy This app does not replace medical advice, diagnosis, or treatment. If you have any questions about your medication or condition, please consult your doctor, pharmacist, or another qualified healthcare professional.
Petal
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You know your skin flared. What you do not know is why. Petal is a daily skin diary for people living with eczema, atopic dermatitis, or sensitive skin. Rate your skin each day, log symptoms and triggers, track your routines, and let Petal surface the patterns you might not notice on your own. Not a medical tool. A personal observation tool that helps you understand your skin over time. -What you can do with Petal- 10-point daily score: Rate your skin from 1 to 10. A color-coded bar chart shows your progress at a glance. Detailed symptom and body area logging: Select from symptoms including itching, dryness, redness, swelling, and more. Choose affected areas by category - face, upper body, arms and hands, lower body and feet - with left and right options for each. Environmental triggers: Log weather, body feel (hot and sweating, muggy, indoor dry air, pollen), stress level, sleep hours, and anything you suspect triggered a reaction. Photo diary: Attach up to 5 photos per entry (10 with Premium) to visually track skin changes over time. Routine tracking: Log your skincare and supplement routines daily using quantity steppers. See how consistent routines correlate with your skin score. Trend analysis: View a score line chart with on-device auto insights. Example: "Days with pollen logged score 2.2 pts lower on average." Edit past entries: Update any previous record from the diary tab at any time. Custom options: Add, hide, or rearrange symptom, body area, weather, and trigger options to match your personal situation. Managed from the Routine tab. Who this is for People managing eczema or atopic dermatitis over the long term. Those with sensitive skin who want to understand flare patterns. Anyone who wants to bring concrete records to a dermatologist appointment. People testing a new skincare routine and wanting objective data on results.
Screenshots
Verdict
The clearest difference is ads: Petal at none against SLIT Support's shown. SLIT Support's advantage is update cadence (weekly vs every 6 weeks) and iOS requirement (14.0 vs 17.0). On price, in-app purchases 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
Both are free to download. SLIT Support sells 2 in-app purchases, starting at $2.99 per month and Petal sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SLIT Support ships an update weekly, Petal every 6 weeks. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.
| Parameter | SLIT Support | Petal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly â better | Every 6 weeks |
| Ads | Yes | No â better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod â better | iPhone |
| Requires iOS | 14.0 â better | 17.0 |
| Further details â not scored | ||
| Size | 90 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Kenta Fukushima | torankirite |
In-app purchases
SLIT Support
- Premium Plan (1 Month)$2.991 Month
- Premium Plan (1 Year)14 Days trial$24.991 Year
Petal
- Petal Premium$3.99
Questions
Is SLIT Support free?
Is Petal free?
Do SLIT Support or Petal have ads?
Which is updated more often, SLIT Support or Petal?
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