ScentShelf vs Datto
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ScentShelf
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ScentShelf is a private catalog for the fragrances you actually own: every bottle with its house, concentration, note pyramid, photo, and how many milliliters are really left. The level is the heart of it. Log a wear and ScentShelf lowers that bottle's level automatically, about 0.1 mL per spray, and estimates how many wears remain at your own spray habit. A slider lets you correct it against the glass anytime. When a favorite drops low, the shelf says so before the bottle surprises you. Every wear carries its occasion (work, date night, travel, and more) and its season, filled in from the date. That log becomes your story: your signature scent overall and per season, the notes you actually love ranked by how often they were on your skin, wears by season and occasion, and your shelf by family. Build each bottle's pyramid from the built-in note guide: more than a hundred real fragrance notes across the wheel's fourteen families, from bergamot to birch tar, each explained in plain words. Tap any note on a bottle to read what it smells like. Samples and decants get their own tray: vials, decants, travel sprays, and testers with milliliters remaining and a verdict. When one proves full bottle worthy, send it to the wish list in one tap. The wish list keeps the hunt organized, grail to someday, with budgets and a Found It flow that moves the bottle onto your shelf, details prefilled. Every bottle carries its money story too: what you paid, where it came from, the batch code, and your own value estimate. Insights add it up: collection value over time, paid versus estimated, and the totals that belong in an insurance file. WHAT YOU GET - Bottle catalog with photos, sizes, and live juice levels - Note pyramid per bottle: top, heart, and base - Wear log by occasion and season, with automatic level tracking - Signature scent insights: overall, per season, and the notes you love - Sample and decant tracker with verdicts and milliliters left - Wish list with priorities, budgets, and a found-it flow - Built-in note guide: 100+ notes across 14 families, in plain words - Collection register PDF and shelf CSV export - Syncs across iPhone, iPad, and Mac with iCloud FREE AND LIFETIME Free covers a real start: 10 bottles, 10 samples, the full wear log, the wish list, and the note guide. Lifetime is a single purchase that unlocks unlimited bottles and samples, the insight screens, and the register PDF and CSV export, forever. No subscription. PRIVATE BY DESIGN No account of ours and no tracking. Your shelf lives on your device and in your private iCloud, which we cannot read. Settings has a Delete All My Data control that erases everything from your device and your iCloud. PRICING ScentShelf Pro is a one time Lifetime purchase of $12.99 USD. Payment is charged to your Apple Account at confirmation of purchase. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Datto
Visually track important upcoming dates directly on your device's home screen. Set up events once and get a quiet, constant reminder of how much time remains until your goals, birthdays, or trips.
- Home screen countdown widget
- Unlimited events (Pro)
- Customizable colors
- Repeating events (Pro)
- Milestone reminders (Pro)
- iCloud sync
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You don't have to open it to see how many days are left. Datto is a quiet countdown that puts the days until your important dates right on your Home Screen. There is no habit to keep. Put it there once, and every glance tells you how long is left. An exam, a deadline, a birthday, a trip, a move — you add the day only once. ■ What it does (free) ・Counts down the days to the dates you care about (up to three) ・Shows one of them in a Home Screen widget (small) ・12 curated colors, plus any custom color you like ・Text color adjusts automatically to stay readable ・A dark appearance — match your device, or keep it light or dark ■ Datto Pro (a one-time purchase, not a subscription) ・As many widgets as you like — Medium, Large and the Lock Screen too ・Unlimited events ・Repeating events (yearly or monthly, rolling over on their own) ・Milestone reminders (100 days, the day before, the day itself — always silent) ・Hours and minutes as the day gets close ・Categories to keep work, family and trips apart ・iCloud sync — the same days on every device signed in to the same Apple Account ■ Made for you if ・You want to keep a goal in view ・You would rather be watched over quietly than nagged ・You like a Home Screen that looks like yours No account, no ads. What you enter stays on your device. With iCloud sync on, it lives only in your own iCloud. To improve the app, only anonymous usage (such as which screens were opened) is sent. Never your event names, and never your name, email, or advertising ID. You can turn it off in Settings. Simply, the days until yours.
Screenshots
Verdict
The clearest difference is update cadence: Datto at every 3 days against ScentShelf's every 2 weeks. On price, ads, 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. ScentShelf sells 1 one-off in-app purchase and Datto sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ScentShelf ships an update every 2 weeks, Datto every 3 days. Both last shipped on October 31, 2026.
| Parameter | ScentShelf | Datto |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | InnovaLabWorks | Minari Taniguchi |
In-app purchases
ScentShelf
- ScentShelf Lifetime$12.99
Datto
- Datto Pro$5.99









