KeepDates vs Plunder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeepDates
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Your iPhone remembers birthdays. But important dates like anniversaries are easy to miss. KeepDates fixes that automatically. # What it does KeepDates finds the dates stored in your contacts: anniversaries, custom events, and more. It turns them into reminders you’ll actually see. It works quietly in the background and keeps everything up to date as your contacts change. # Why it’s useful * Never forget anniversaries, milestones, or important personal dates * See all upcoming dates in one simple list * Get reminders before they happen * Works automatically, with no manual setup # How it works * Scans your contacts for date fields * Lets you review and choose what to include * Syncs selected dates into a dedicated calendar * Keeps everything updated in the background # Key Features * Automatic contact date detection * Calendar sync with yearly recurring events * Optional reminders (day before by default) * Widgets for quick access to upcoming dates * Background sync, so it is always up to date * Works completely offline # Widgets * Small widget: next upcoming date * Medium widget: multiple upcoming dates * Lock screen widget: quick glance countdown # Privacy KeepDates is built to be simple and private: * No accounts * No cloud sync * No tracking * All data stays on your device # Premium (Optional) Unlock additional control and customization: * Smart reminders (multiple timings) * More events in widgets + large widget * Look-ahead window control * Pinned contacts * Advanced filtering and customization ### KeepDates is designed to feel like a missing system feature: simple, automatic, and out of the way.
Plunder
Organize and document your personal collections, from challenge coins and pins to patches and memorabilia. Log detailed information, track provenance, and visualize your collection's history and geographic origins.
- Detailed item cataloging
- Log provenance and history
- Visual inventory map
- Searchable collection ledger
- Photo and notes documentation
- Categorization and tagging
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Plunder is a personal collection logbook built for anyone who collects challenge coins, patches, or pins. Create a detailed catalog of the items you own, document the history behind each piece, and build a visual record of how your collection has grown over time. Whether you collect pins, coins, medallions, souvenirs, or any other personal memorabilia, Plunder gives you one place to keep a proper manifest of it all. MAINTAIN THE MANIFEST Record the details that matter for every item in your collection. Add photos, names, categories, dates, acquisition details, prices, notes, and other information you want to preserve. Plunder turns your collection into an organized archive you can enjoy browsing. LOGGING PROVENANCE Every piece has a story. Record when it came from, who gave it to you, and any other details that make it significant to you. Over time, your log becomes more than an inventory—it becomes a history of your collection and how you built it. CHART YOUR TREASURES See where your collection came from on a personal inventory map. Items can be tied to the places where you got them, creating a geographic record of your haul and letting you look back at the people, places, or ports of call from your memories. CONSULT THE LEDGER Browse your collection visually, search through what you own, and pull up an item’s details whenever you need them. No spreadsheets, scattered photos, or forgotten notes—just one organized ledger for the things you’ve collected. BUILT FOR COLLECTORS Plunder is part collection catalog, part ship’s log, and part personal archive. It’s designed to make documenting a collection feel useful without making it feel like bookkeeping. Every piece has a provenance. Every collection has a history. So set sail sail and log your loot with Plunder.
Screenshots
Verdict
The clearest difference is update cadence: Plunder at daily against KeepDates's every 9 days. Plunder also leads on iOS requirement (18.0 vs 26.0). 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. KeepDates sells 1 one-off in-app purchase and Plunder sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
KeepDates ships an update every 9 days, Plunder daily. The most recent releases landed on September 19, 2026 and September 23, 2026 respectively.
| Parameter | KeepDates | Plunder |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 9 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Ziga Dolar | Connor Rose |
In-app purchases
KeepDates
- Premium Unlock$3.99
Plunder
- Drop a Dubloon$1.99
- Buy the Crew a Round$4.99
- Support the Voyage$9.99





