# Renumber vs SyncML LITE 4

The clearest difference is in-app purchases: SyncML LITE 4 at none against Renumber's 3. SyncML LITE 4 also leads on ads (none vs shown) and iOS requirement (10.0 vs 16.6). Renumber's advantage is update cadence (every 2 months vs every 26 months). On price and device support there is nothing between them.

Both are free to download. Renumber sells 3 in-app purchases, starting at $0.99 per month. SyncML LITE 4 asks for nothing beyond the download.

Renumber ships an update every 2 months, SyncML LITE 4 every 26 months. The most recent releases landed on October 15, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Renumber | SyncML LITE 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.7 (3 ratings)](https://appshunter.io/ios/app/syncml-lite-4/id1170925516/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 26 months |
| Monetization | — | Free |
| Size | 7 MB | 6 MB |
| Requires iOS | 16.6 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Miciniti Technologies](https://appshunter.io/developer/1847893750) | [Lukas Zeller](https://appshunter.io/developer/299521020) |

## What reviewers say

### Renumber

[App page](https://appshunter.io/ios/app/renumber-track-what-counts/id991488576)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $9.99 | per year |
| Renumber Lifetime | $29.99 | one-time |


### 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


## Frequently asked questions

### Is Renumber free?

Renumber is free to download, with in-app purchases available.

### Is SyncML LITE 4 free?

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

### Do Renumber or SyncML LITE 4 have ads?

Renumber shows ads; SyncML LITE 4 does not.

### Which is updated more often, Renumber or SyncML LITE 4?

Renumber ships an update every 2 months, and SyncML LITE 4 every 26 months. Most recently, Renumber was updated on October 15, 2026 and SyncML LITE 4 on October 26, 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.*