# Wise Lum vs Contact Backup & Export Secure

The clearest difference is review sentiment: Contact Backup & Export Secure at 100% against Wise Lum's 0%. Wise Lum's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. Contact Backup & Export Secure sells 1 in-app purchase, starting at $2.99 per 7 days. Wise Lum asks for nothing beyond the download.

## The numbers

| Metric | Wise Lum | Contact Backup & Export Secure |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.4 (7 ratings)](https://appshunter.io/ios/app/wise-lum/id1316358919/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 105 MB | 50 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [兴高 汪](https://appshunter.io/developer/1195509761) | [CodeCross](https://appshunter.io/developer/1660793254) |

## What reviewers say

### Wise Lum

[App page](https://appshunter.io/ios/app/wise-lum/id1316358919)

Control your smart lights' color and brightness. Experience vivid lighting effects that sync with your music, transforming your environment.

**Highlights:** Control light color, Adjust brightness, Music-reactive lighting, Customizable lighting experiences

**Features:** macOS Compatibility

**In-app purchases:** none


### Contact Backup & Export Secure

[App page](https://appshunter.io/ios/app/contact-backup-and-export-secure/id6764262875)

Securely back up and export your phone contacts to various file formats like Excel, CSV, and VCF. This app offers 100% offline processing and direct cloud backups to your personal storage, ensuring your data remains private and under your control.

**Highlights:** Export contacts to CSV, Excel, Word, Plain Text, and vCard, 100% offline processing on device, Cloud backup to Google Drive and iCloud, Zero servers, accounts, or data collection, Export all or select specific contacts, Filter and export by contact groups, Clean, modern design with intuitive navigation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per 7 days |


## Frequently asked questions

### Is Wise Lum free?

Wise Lum is free to download, with no in-app purchases.

### Is Contact Backup & Export Secure free?

Contact Backup & Export Secure is free to download, with in-app purchases available.

### Do Wise Lum or Contact Backup & Export Secure have ads?

Neither Wise Lum nor Contact Backup & Export Secure shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*