Comparison

Secret Diary With Passcode vs Petlog

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Secret Diary With Passcode

This app provides a secure and user-friendly platform to record your daily life, emotions, and secrets. It offers features like password protection, mood selection, and photo attachments to help you preserve your memories privately.

Highlights
  • Password protection
  • Add photos to entries
  • Select moods for entries
  • Calendar overview
  • Search entries by text or mood
  • Customizable themes and fonts
Features
Read full description

Beautiful yet discrete, this amazing secret diary was created to be simple and user friendly just so that you can focus on writing your day to day life story as it happens. Either you want to keep your secret away from prying eyes, maybe a secret love story, or you just want to record your life's emotions as time passes, you now have a friend that listens to you without judging. You have the chance to own an elegant secret journal which is always there for you when you want to confess or when you want to relive great moments of your life. Lock all your secrets and take advantage of some great features that this diary offers you: DIARY ENTRIES - EASY TO USE - see all your diary entries at a glance - beautiful main screen calendar with great overview - create, modify, delete entries in a very simple and intuitive way - add pictures functionality - possibility to choose suggestive moods for each entry - emoji support - journal timeline - see your all your journal notes for a certain time period - search functionality - search entries by mood or containing text PASSWORD & LOCK - PRIVATE & PROTECTED - set a password(PIN code) to protect your diary secrets - change password whenever you want - disable or enable password CUSTOMIZATION - choose from different beautiful color styles/themes - choose from different text fonts - add, edit, delete moods - manage moods to best fit your emotions - add, edit, delete reminders - friendly reminder to write about your day - choose calendar first day of week (Sunday or Monday) - data reset functionality A beautiful diary for your amazing stories and secrets. Enjoy writing so that you can relive your lifetime moments.

About

Petlog

Features
Read full description

Petlog is the daily health log built for pets with chronic or ongoing conditions — allergies, IBD, thyroid disease, post-surgery recovery, and anything else that needs careful watching. Most pet apps are for healthy pets. Petlog is for the other ones. THE 20-SECOND DAILY LOG Six quick questions. One answer each. Auto-saves as you go — no submit button, no forgotten entries. Tap through appetite, energy, stool, vomiting, a photo, and a note. You're done before the kettle boils. Do it every day and you have a real record, not a pile of guesses. THE VET BRIEF — YOUR APPOINTMENT SUPERPOWER Before your next visit, tap "Create Vet Brief". Choose a date window, check which sections to include, and hit Preview. Petlog generates a clean one-page PDF — formatted like a clinical handout, not a screenshot of an app. Appetite trends, energy trends, stool and vomit counts, current medications, upcoming vaccines, and your notes, all on a single page. Hand it to the vet at the door or AirDrop it before you walk in. Vets will actually read it. That's the point. HISTORY AT A GLANCE The calendar heatmap shows every day at once. Warmer cells mean more flags that day — low appetite, loose stool, a vomiting episode. Tap any cell to see the full entry. Swipe left or right to move between months. Spot the week things got worse before you'd consciously noticed a pattern. TRENDS WITHOUT GUESSWORK Three metric charts — appetite, energy, stool — over the last 7 or 30 days. When a metric falls below its rolling baseline for five or more days, a callout card appears: "Appetite below normal 5 of last 7 days. Consider mentioning at next visit." Descriptive only, never diagnostic. You bring the context, Petlog brings the data. MEDICATIONS AND VACCINES IN ONE PLACE Log current medications with dose and schedule. Track vaccines with administered and due dates. Vaccines due within 60 days show in amber so they don't slip past. The Vet Brief pulls all of this in automatically. MULTIPLE PETS Managing more than one animal? Switch between pets in the header. Each pet has its own log, history, trends, and profile. Free tier covers one pet — Pro unlocks unlimited. CALM BY DESIGN No streaks. No achievements. No guilt when you miss a day. Petlog is for owners in a difficult situation — a pet with a chronic condition is stressful enough. The app stays out of the way and shows up when you need it. PETLOG PRO Upgrade to unlock unlimited pets, full history beyond 14 days, and Vet Brief PDF export. - Monthly: $4.99 - Yearly: $34.99 (save vs monthly) A 7-day free trial is included. Subscriptions auto-renew until cancelled in iOS Settings. IMPORTANT Petlog is a descriptive log, not a diagnostic tool. Every generated PDF includes the disclaimer: "descriptive log only, no diagnosis." Always consult your vet for medical decisions. Terms of Use: https://petlog.vertostudios.com/terms Privacy Policy: https://petlog.vertostudios.com/privacy

Screenshots

Secret Diary With Passcode4 screens
Petlog4 screens

Verdict

The call

The clearest difference is in-app purchases: Secret Diary With Passcode at none against Petlog's 2. Secret Diary With Passcode also leads on iOS requirement (12.0 vs 16.0). Petlog's advantage is ads (none vs shown). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Petlog sells 2 in-app purchases, starting at $4.99 per month. Secret Diary With Passcode asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Secret Diary With Passcode versus Petlog: the parameters behind the verdict, then further details
ParameterSecret Diary With PasscodePetlog
PriceFreeFree
Rating4.6 (8.2K ratings) — better—
Positive reviews83.1% of reviews—
Number of ratings8.2K — better—
Update frequencyEvery 6 weeks—
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size30 MB45 MB
Age rating4+4+
DeveloperBerce AlinMads Borg Hundahl

Bugs and requests

Secret Diary With Passcode

Reported bugs

3 issues
  • Incorrect date display on calendar
  • Entries disappearing after app updates
  • Password reset not working

Requested features

5 requests
  • Ability to edit/delete entries
  • Backup/sync options across devices
  • More customization options (colors, backgrounds, emojis)
  • Voice recording or video integration
  • Reminders and notification options

Petlog

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Secret Diary With Passcode

No in-app purchases

2 purchases

Petlog

Subscriptions2
  • Petlog Pro Monthly$4.991 Month
  • Petlog Pro Annual$34.991 Year

Questions

Is Secret Diary With Passcode free?
Secret Diary With Passcode is free to download, with no in-app purchases.
Is Petlog free?
Petlog is free to download, with in-app purchases available.
Do Secret Diary With Passcode or Petlog have ads?
Secret Diary With Passcode shows ads; Petlog does not.

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