IID pro vs Contacts backup `
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IID pro
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IID is a mobile surveillance client app. With this app you can access surveillance products(Network Cameras,Network Speed Domes,NVRs) through network and view live or recorded video, receive alarms and manage cloud devices using your mobile phone.
Contacts backup `
Safeguard your address book with this straightforward utility. Easily back up, restore, and transfer contacts in various formats, even offline. Schedule regular backups and organize them by date for peace of mind.
- One-tap contact backup
- Restore from previous backups
- Export in VCF or CSV
- Share backups easily
- Smart backup reminders
- Organize backups by date
- Offline functionality
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Never lose a contact again with Contact Keeper – your simple, reliable contact backup and transfer solution. Easily back up, restore, and transfer your contacts in just a few taps. Whether you're switching devices, upgrading phones, or just staying safe, Contact Keeper has you covered. Key Features: • One-tap contact backup to secure your address book • Restore contacts from previous backups anytime • Export contacts in VCF or CSV formats and more • Share backups easily via email, AirDrop, or other apps • Set smart reminders to back up regularly • Organize backups by date • Works offline — no internet required • Unlimited backups and restores • Clean, modern interface with Dark Mode support To unlock unlimited access, you may need to purchase a subscription or in-app purchase. Privacy Policy: enginesstudio.tech/privacy Support & Terms: enginesstudio.tech/support/contact
Screenshots
Verdict
The clearest difference is in-app purchases: IID pro at none against Contacts backup `'s 4. IID pro also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.6). Contacts backup `'s advantage is update cadence (every 3 weeks vs every 38 months). On price 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
Both are free to download. Contacts backup ` sells 4 in-app purchases, starting at $0.99 per 7 days. IID pro asks for nothing beyond the download.
IID pro ships an update every 38 months, Contacts backup ` every 3 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | IID pro | Contacts backup ` |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (53 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 53 — better |
| Update frequency | Every 38 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 111 MB | 11 MB |
| Age rating | 17+ | 4+ |
| Developer | Kariman Raouf | ENGINES STUDIO LAB |
In-app purchases
IID pro
No in-app purchases
Contacts backup `
- Full access for 1 week$0.997 Days
- Full access for 1 month$3.991 Month
- Full access for 1 year$19.991 Year
- Lifetime access$24.99
