Perimeter vs Collections
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perimeter
This AI-powered security app detects potential threats before they occur. It uses unique lights and sounds to warn individuals and deter crime before it happens.
- AI threat detection
- Proactive crime deterrence
- Neighbor Safe™ lights
- Audible warnings
- Driveway monitoring
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Finally, deter theft before it happens. By detecting and warning people before they enter your driveway, your AI named Ava can determine whether to deter any would-be criminals using unique Neighbor Safe™ lights and sounds.
Collections
Easily manage and catalog your personal collections, from watches and stamps to coins and more. Save detailed information, pictures, and values for each item. Syncs across all your iOS devices via iCloud and offers a convenient dark mode.
- Catalog watches, stamps, coins, and more
- Add pictures, descriptions, and values
- Syncs across iOS devices with iCloud
- Quick search functionality
- Dark mode support
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The ultimate app to help manage your collectibles: watches, stamps, coins, etc... Quickly add new items to your collections app. Save pictures, descriptions, manufacturers, price values. Features: - Build your collection quickly adding pictures for each item. - Explore each item in your collection. - Collections are stored and shared between all your IOS devices using iCloud. - Quickly search and find across all your items. - No adds, forever. - Dark mode support. Features to come very soon: - Export and share your collection using .csv files. If you have any questions or feedback we'd love to hear from you at info@nicoyuste.es
Screenshots
Verdict
The clearest difference is rating: Perimeter at 5.0 against Collections's 4.5. Perimeter also leads on iOS requirement (11.0 vs 15.0). Collections's advantage is update cadence (every 5 days vs every 3 weeks). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Perimeter holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
Perimeter ships an update every 3 weeks, Collections every 5 days. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | Perimeter | Collections |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.5 (2 ratings) |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 54 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | PERIMETER AI INC. | Nicolas Yuste Tirados |
Customer experience
Perimeter
Collections
In-app purchases
Perimeter
No in-app purchases
Collections
No in-app purchases
