# BirdieSync vs Keep Contacts

The clearest difference is iOS requirement: BirdieSync at 8.0 against Keep Contacts's 15.0. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for BirdieSync against 5.0 for Keep Contacts. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 55% of BirdieSync's written reviews are positive against 50% of Keep Contacts's.

BirdieSync ships an update every 2 months, Keep Contacts every 6 weeks. The most recent releases landed on August 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | BirdieSync | Keep Contacts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/birdiesync/id386987593/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/keep-contacts/id399754046/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **55.2% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 4 MB | 11 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Callicia](https://appshunter.io/developer/386987596) | [Tactel ab](https://appshunter.io/developer/399754049) |

## What reviewers say

### BirdieSync

[App page](https://appshunter.io/ios/app/birdiesync/id386987593)

Seamlessly sync contacts and events between your iPhone and desktop applications like Thunderbird. Enjoy automatic updates across devices with a focus on data privacy, as information is transferred directly and securely without cloud storage.

**Highlights:** Automatic synchronization, Direct device-to-device transfer, Contact photo support, Multiple address books and calendars, Recurring events and alarms, Secure connection

**Features:** macOS Compatibility

**In-app purchases:** none


### Keep Contacts

[App page](https://appshunter.io/ios/app/keep-contacts/id399754046)

Securely back up and restore your phone's contact lists for free. Easily manage, merge duplicates, and import/export contacts via a web interface. Sync across multiple devices and restore to a new phone if yours is lost or damaged.

**Highlights:** Contact backup and restore, Sync across multiple devices, Find and merge duplicate contacts, Import and export contact lists, Restore deleted contacts, Web-based contact management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BirdieSync free?

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

### Is Keep Contacts free?

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

### Which has better reviews, BirdieSync or Keep Contacts?

BirdieSync and Keep Contacts are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do BirdieSync or Keep Contacts have ads?

Neither BirdieSync nor Keep Contacts shows ads.

### Which is updated more often, BirdieSync or Keep Contacts?

BirdieSync ships an update every 2 months, and Keep Contacts every 6 weeks. Most recently, BirdieSync was updated on August 24, 2026 and Keep Contacts on September 20, 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.*