# iPlonge vs Contact.s Back Up

The clearest difference is in-app purchases: iPlonge at none against Contact.s Back Up's 9. iPlonge also leads on review sentiment (100% vs 74%) and iOS requirement (7.0 vs 15.0). Contact.s Back Up's advantage is update cadence (fortnightly vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Contact.s Back Up sells 9 in-app purchases, starting at $3.99 per month. iPlonge asks for nothing beyond the download.

iPlonge ships an update every 6 weeks, Contact.s Back Up fortnightly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | iPlonge | Contact.s Back Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (1.3K ratings)](https://appshunter.io/ios/app/contacts-back-up/id1474294286/reviews)** |
| Number of ratings | — | **1.3K** |
| Positive reviews | **100.0% of reviews** | 73.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 61 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TIWAS COMPANY](https://appshunter.io/developer/638890930) | [Symon Johnson](https://appshunter.io/developer/1469249200) |

## What reviewers say

### iPlonge

[App page](https://appshunter.io/ios/app/iplonge/id638890847)

This app provides an instant dive time calculator based on MN90 tables. It displays ascent times and GPS data for quick dive planning. It is a supplementary tool and does not replace formal dive table training.

**Highlights:** Instant dive time calculation, MN90 table based planning, Ascent time display, GPS data integration, Simple value display

**Features:** macOS Compatibility

**In-app purchases:** none


### Contact.s Back Up

[App page](https://appshunter.io/ios/app/contacts-back-up/id1474294286)

Easily back up, restore, and sync all your phone contacts with a single tap. Store them locally or in cloud services like Google Drive and iCloud. Export contacts to spreadsheets for organization and analysis.

**Highlights:** One-tap contact backup, Cloud sync (Google Drive, iCloud), Contact restore functionality, Export contacts to spreadsheets, Merge, filter, and remove contacts, Auto backup function

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contacts Monthly Subscription | $3.99 | per month |
| Contacts Weekly Subscription | $4.99 | per 7 days |
| Premium Monthly | $4.99 | per month |
| Weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |
| Premium Monthly | $19.99 | per month |
| Contacts Yearly Subscription | $49.99 | per year |
| Yearly | $49.99 | per year |
| Unlock Everything | $19.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast and efficient
- 💯 Works as expected
- 🔒 Secure backup
- 📚 Helpful for job transition

**What reviewers complain about**

- 🐛 Crashes frequently
- 🔍 Difficult to navigate
- 💳 Requires payment info
- 🔋 High battery consumption
- 🤖 Poor interface design

**Reported bugs**

- Login/signup issues
- Disappearing contact information
- Backup and restore not working as expected
- Incompatible with older devices

**Requested features**

- Dark mode option
- Sync with Gmail contacts
- Restore deleted contacts
- Improved backup and restore process
- Better error handling and warnings


## Frequently asked questions

### Is iPlonge free?

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

### Is Contact.s Back Up free?

Contact.s Back Up is free to download, with in-app purchases available.

### Do iPlonge or Contact.s Back Up have ads?

Neither iPlonge nor Contact.s Back Up shows ads.

### Which is updated more often, iPlonge or Contact.s Back Up?

iPlonge ships an update every 6 weeks, and Contact.s Back Up fortnightly. Most recently, iPlonge was updated on November 1, 2026 and Contact.s Back Up on November 3, 2026.

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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.*