Digestly: Food Allergy Diary
The whole family, one diary
Free · Designed for iPhone. Not verified for macOS.
Log the meal. Log the symptom. See what came before, including reactions up to three days later. A family allergy diary with a report for your doctor. Free.
Digestly is a food, symptom and exposure diary for families managing food allergies and intolerances. Log what was eaten, what happened afterwards and anything else that might matter, and Digestly looks for patterns between them — including reactions that arrive up to three days later — and turns them into a report you can hand to your doctor.
It never diagnoses. It says what was logged and when, how often one thing came before another, and how sure it is. What that means is a conversation for a clinician, and Digestly exists to make that conversation better informed.
LOG IN SECONDS
• Meals with their ingredients — favourites, recents, "same as yesterday", saved meals
• Scan a barcode and the ingredient list is offered to you
• On iPhones with Apple Intelligence, read a photo of the plate on the device itself; suggestions stay unticked until you confirm them
• Symptoms with a severity from 1 to 5, the part of the body, a note and a photo
• Exposures: pollen, pets, skin products, detergents, dust and more
• Medication, sleep and illness, so a pattern that overlaps one of them says so
PATTERNS WITH HONEST LABELS
• Every food and exposure is checked against every symptom across windows from 2 to 72 hours
• Each pattern is put through an exact statistical test and corrected for everything else that was tried, so testing many pairings does not manufacture a result
• Labelled Recurring or Possible, with its counts, the window that matched and the entries behind it
• A "why am I seeing this?" sheet explains what was compared, and what the pattern does not mean
THE WHOLE FAMILY, ONE DIARY
• A profile for each person, a switcher on every screen, patterns worked out per person
• Link a breastfed baby to the parent who feeds them and see the parent's meals alongside the baby's symptoms
• Feeding stages for babies: breastmilk, formula, first solids, the family menu
• Share a profile to a co-parent's phone as an encrypted file that opens only with a code you pass on yourself
FOR THE APPOINTMENT
• A PDF report for a date range: symptom timeline, the foods and exposures that appeared before symptoms with their counts, the exposure log and any trial in progress
• An emergency card per person: the action plan your doctor gave you, stored exactly as given, who to call, and auto-injector expiry dates with reminders
• Elimination and reintroduction trials, comparing the symptom rate during the trial with the weeks around it
• CSV export of the raw diary
EVERY DAY
• Trends: each symptom's frequency and severity by week or month, with sleep and activity from Apple Health if you connect it (read-only, optional, off by default)
• Foods: a child's journey through first foods, group by group
• Apple Watch: log a symptom from the wrist in one tap; the emergency-care notice appears there too
• Widgets for today's counts and the emergency card; a Control Center control that opens the log
PRIVACY IS THE PRODUCT
• No accounts, no servers, no analytics, no tracking, no third-party code
• Your diary stays on your iPhone and, if you choose, in your own iCloud
• The only network request is the barcode lookup, and it sends the barcode digits and nothing else
• Erase all data removes everything from the device and from your iCloud
FREE, ALL OF IT
No subscription, no adverts, no locked features.
Available in English, German, Spanish, French and Russian. Requires iOS 18 or later. Apple Watch companion requires watchOS 11 or later.
Digestly is a journal, not a medical device. It does not diagnose or treat any condition. Always consult a qualified clinician about allergies — especially for children, and urgently for any severe reaction. Call emergency services for signs of anaphylaxis.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Keep a running trial on your Lock Screen. On the trial's page, turn on Show on the Lock Screen to see which day it is on, with a button that opens the quick log.
Send us feedback from inside the app: Settings > Help & feedback. You can rate Digestly and tell a friend about it from there too.
The Feature counts screens are now in German, Spanish, French and Russian, and Settings now says more precisely what stays on your phone.
Our privacy policy has been updated to cover feedback and Lock Screen cards: longstopsoftware.com/privacy
The developer, Longstop Software Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- User Content
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Search History
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LONGSTOP SOFTWARE LTD
- Size
- 18.6 MB
- Category
- Medical
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
English and 4 more
- English, French, German, Russian, Spanish
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Longstop Software Ltd