# SyncML LITE 4 vs Arca by Privacy Everywhere

The clearest difference is update cadence: Arca by Privacy Everywhere at weekly against SyncML LITE 4's every 26 months. SyncML LITE 4's advantage is iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SyncML LITE 4 ships an update every 26 months, Arca by Privacy Everywhere weekly. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | SyncML LITE 4 | Arca by Privacy Everywhere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (3 ratings)](https://appshunter.io/ios/app/syncml-lite-4/id1170925516/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Weekly** |
| Monetization | Free | Free |
| Size | 6 MB | 38 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lukas Zeller](https://appshunter.io/developer/299521020) | [Privacy Everywhere ApS](https://appshunter.io/developer/1429670189) |

## What reviewers say

### SyncML LITE 4

[App page](https://appshunter.io/ios/app/syncml-lite-4/id1170925516)

This app synchronizes iOS contacts with servers using the legacy SyncML standard. It's designed for users who specifically need this older technology, often recommended by IT departments. It can also act as a local SyncML server for older devices.

**Highlights:** Contacts-only synchronization, SyncML engine, Syncs selected iOS contact stores, Acts as local SyncML server, Assign/remove contact group membership

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

**In-app purchases:** none


### Arca by Privacy Everywhere

[App page](https://appshunter.io/ios/app/arca-by-privacy-everywhere/id1429670190)

This email client offers robust PGP encryption for secure communication. Your private keys are generated and stored locally on your device, ensuring they never leave. It seamlessly integrates with other PGP-compatible applications.

**Highlights:** PGP encryption, Local key generation, Private key security, Public key server storage, Compatibility with PGP Standard apps, Supports PGP/mime and old format

**In-app purchases:** none


## Frequently asked questions

### Is SyncML LITE 4 free?

SyncML LITE 4 is free to download, with no in-app purchases.

### Is Arca by Privacy Everywhere free?

Arca by Privacy Everywhere is free to download, with no in-app purchases.

### Do SyncML LITE 4 or Arca by Privacy Everywhere have ads?

Neither SyncML LITE 4 nor Arca by Privacy Everywhere shows ads.

### Which is updated more often, SyncML LITE 4 or Arca by Privacy Everywhere?

SyncML LITE 4 ships an update every 26 months, and Arca by Privacy Everywhere weekly. Most recently, SyncML LITE 4 was updated on October 16, 2026 and Arca by Privacy Everywhere on October 5, 2026.

---

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