Comparison

Prefume vs Kept By

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

Head to head
About

Prefume

This app helps you document and remember your fragrances through a timeline system. It offers personalized daily suggestions based on weather and your mood, and allows for effortless check-ins to track your scent experiences. All your data is kept private and analyzed on your device.

Highlights
  • Timeline-based fragrance journaling
  • Weather-aware daily suggestions
  • Smart collection rotation
  • Acquisition and spending insights
  • Testing workflows with reminders
  • Offline-first design for privacy
Features
Read full description

Transform how you experience and remember your fragrances with Prefume, the personal fragrance assistant designed for perfume enthusiasts, collectors, and newcomers alike. Your Fragrance Journey, Documented Unlike basic fragrance apps that only let you rate scents, Prefume captures your complete relationship with each fragrance through a beautiful timeline system. From first impressions to long-term thoughts, track how your opinion evolves with every wear. Perfect Daily Suggestions Never waste time choosing what to wear again. Prefume learns your preferences and suggests the perfect fragrance based on today's weather, your mood, and which bottles you haven't worn recently. Get contextual recommendations that actually make sense for your lifestyle. Effortless Check-ins Gentle notifications throughout the day help you capture meaningful experiences. Track longevity, projection, compliments received, and how each fragrance makes you feel. Build rich data that reveals patterns in what you truly love. Privacy-First Design All analysis happens on your device. Discover hidden patterns in your preferences and get recommendations without sharing any personal data. Your collection stays completely private. Perfect for Every Fragrance Lover Beginners: Guided testing workflows help you develop your nose Enthusiasts: Comprehensive journaling tools for tracking your growing collection Key Features Timeline-based fragrance journaling with rich context capture Weather-aware daily fragrance suggestions Smart rotation to help you enjoy your entire collection Acquisition tracking with spending insights Testing workflows with automated check-in reminders Offline-first design - your data stays private and secure Beautiful, native iOS interface designed for speed and simplicity Why Fragrance Lovers Choose Perfume "Finally, an app that understands that fragrances are about experiences, not just ratings. The timeline view shows how my relationship with each scent develops over time." - Beta User Free to Start, Premium to Excel Prefume free with up to 12 perfumes in your collection. Upgrade to Premium Extract for unlimited collection, advanced insights, and comprehensive collection analytics. No monthly subscriptions - pay once, own forever. Download Prefume today and discover what your nose has been trying to tell you. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://prefume.app/privacy

About

Kept By

Digitally preserve cherished paper memories like cards, letters, and notes. Capture images, add details like sender and occasion, and easily organize, search, and revisit your personal keepsakes.

Highlights
  • Digitally preserve paper memories
  • Capture front, inside, and back images
  • Add sender, event, date, and notes
  • Organize and search personal collection
  • Browse saved keepsakes easily
Features
Read full description

Kept By helps you preserve the cards, letters, notes, and personal keepsakes that matter. Instead of keeping meaningful paper memories scattered in boxes, drawers, or folders, Kept By gives you a simple way to capture and organize them on your iPhone. Use Kept By to photograph the front, inside pages, and back of a card or letter, then save it with helpful details such as the sender, occasion, date, and personal notes. Your keepsakes can be browsed, searched, and revisited whenever you want. Features: • Capture cards, letters, notes, and keepsakes • Save front, inside, and optional back images • Add sender, event, date, and notes • Browse your saved memories in one place • Search and organize your personal collection • View saved keepsakes in a clean, simple layout Kept By is designed for personal memory keeping. It is not a social network and does not require an account.

Screenshots

Prefume4 screens
Kept By4 screens

Verdict

The call

The clearest difference is in-app purchases: Kept By at none against Prefume's 1. Kept By also leads on ratings volume (3 vs 1) and iOS requirement (18.0 vs 26.0). Prefume's advantage is update cadence (every 6 days vs every 2 months). On price, rating, review sentiment and ads 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. Prefume sells 1 one-off in-app purchase. Kept By asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Prefume against 5.0 for Kept By. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Prefume ships an update every 6 days, Kept By every 2 months. The most recent releases landed on September 25, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
Prefume versus Kept By: the parameters behind the verdict, then further details
ParameterPrefumeKept By
PriceFreeFree
Rating5.0 (1 ratings)5.0 (3 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings13 — better
Update frequencyEvery 6 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.018.0 — better
Further details — not scored
Size94 MB68 MB
Age rating9+4+
DeveloperAnatole AyadiJames Jackson

Customer experience

Prefume

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Kept By

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Prefume

One-time1
  • Extract - Premium Features$24.99
None

Kept By

No in-app purchases

Questions

Is Prefume free?
Prefume is free to download, with in-app purchases available.
Is Kept By free?
Kept By is free to download, with no in-app purchases.
Which has better reviews, Prefume or Kept By?
Prefume and Kept By are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.
Do Prefume or Kept By have ads?
Neither Prefume nor Kept By shows ads.
Which is updated more often, Prefume or Kept By?
Prefume ships an update every 6 days, and Kept By every 2 months. Most recently, Prefume was updated on September 25, 2026 and Kept By on October 1, 2026.

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