Plain Events vs RAID Calc2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Plain Events
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PlainEvents helps groups coordinate the details that make an event work: who is coming, where to be, what is happening, what needs to get done, and what changed. Create an event, invite guests, build a schedule, add activities, assign tasks, share updates, and collect quick decisions with polls. Whether you are planning a wedding weekend, birthday, potluck, trip, conference, or casual get-together, PlainEvents keeps the moving pieces organized in one shared place. Key features: • Create events with dates, locations, descriptions, and helpful details • Invite guests and track response states • Build schedules and activities with registrations for multi-part events • Assign tasks so responsibilities are clear • Post event news and updates • Use polls to make group decisions • Organize locations and event-specific details • Coordinate potlucks, weddings, conferences, birthdays, and more PlainEvents is built for real coordination, not just saving a date. It gives hosts and guests a clear shared view of the plan so everyone knows what is happening and where to be next. Privacy Policy: https://www.plainevents.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
RAID Calc2
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RAID Calc2 is retiring. It leaves the App Store on December 31, 2026. It keeps working on your device after that, but won’t get updates. Its successor is RAID Calculator, from the same developer. It’s the same calculator, plus NAS planning for Synology SHR, Unraid, ZFS, SnapRAID and Btrfs, RAID 50 and 60, and RAID-Z. Search the App Store for “RAID Calculator”, or tap the banner in the app. UNTIL THEN, RAID CALC2 STILL DOES THE JOB • RAID 0, 1, 5, 6, 10 and JBOD • Usable and raw capacity, and how efficient the layout is • What the space will show as in TiB, the binary units most systems report • A drive strip showing which drives hold data, parity or mirrors • How many drive failures the array survives • Speed and availability ratings, with a plain-language guide to every level • A caution before a risky rebuild on large drives, with a one-tap switch to RAID 6 • One-tap fixes when the drive count doesn’t suit the level ON EVERY SCREEN • On iPad, and on iPhone Duo opened in landscape, results sit beside inputs • Rotates to landscape on iPhone • Built for iOS 26 with native controls and Liquid Glass • Dark mode, Dynamic Type at every size, and full VoiceOver support • In English, Spanish, French, Italian, Japanese, German, Traditional and Simplified Chinese, Korean and Brazilian Portuguese PRIVATE No accounts, no tracking, no ads. Everything stays on your device. Not affiliated with or endorsed by Synology Inc. Synology and SHR are trademarks of Synology Inc. Not affiliated with or endorsed by Lime Technology, Inc. Unraid is a trademark of Lime Technology, Inc. ZFS is a trademark of Oracle and/or its affiliates. Not affiliated with or endorsed by Oracle.
Screenshots
Verdict
The clearest difference is in-app purchases: RAID Calc2 at none against Plain Events's 3. Plain Events's advantage is update cadence (every 8 days vs every 5 months) and iOS requirement (18.5 vs 26.0). On price, ads 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. Plain Events sells 3 in-app purchases, starting at $4.99 per month. RAID Calc2 asks for nothing beyond the download.
Plain Events ships an update every 8 days, RAID Calc2 every 5 months. The most recent releases landed on September 21, 2026 and October 16, 2026 respectively.
| Parameter | Plain Events | RAID Calc2 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.5 — better | 26.0 |
| Further details — not scored | ||
| Size | 52 MB | 7 MB |
| Age rating | 4+ | 12+ |
| Developer | TightApps | Todd Greco |
In-app purchases
Plain Events
- Plain Events Pro (Monthly)7 Days trial$4.991 Month
- Plain Events Pro (Yearly)1 Month trial$44.991 Year
- Plain Events Pro (Lifetime)$399.00
RAID Calc2
No in-app purchases









