Lusha vs. Synce: Which Tool Delivers the Best Mobile Numbers?

Why reliable data matters

When you’re running sales in the Netherlands and need to reach decision-makers directly, one thing matters most: reliable and up-to-date mobile numbers. This is especially important in niche or smaller markets, where finding each phone number matters since you don’t want to miss out on valuable opportunities.

So as a proof of concept for one of our clients that delivers a SaaS solution for managing deals in manufacturing we put the data to the test.

To put this to the test, we compared Lusha and Synce using identical filters:

• Industry: manufacturing

• Company size: 10–200 employees

• Function: sales manager

• Location: Netherlands

• Important: only mobile (06) numbers included — no landlines

The Numbers

So let’s check the numbers, in total we put 33 leads to the test resulting in the following find rates:

At first glance, Synce delivers a stronger find rate: nearly 78.8% compared to Lusha’s 63.6%. In practice, this means Synce provides more usable mobile numbers from the exact same target audience.

Overlap and Differences

So now let’s not only look at the find rates, but actually at the overlap & differences between Synce and Lusha:

👉 What stands out: Synce delivers more unique matches (9 extra mobile numbers) compared to Lusha. On top of that, there are 5 cases where both found different numbers — raising questions about the freshness of the data.

Observations on Lusha

During the test, several issues with Lusha became clear:

• Lack of transparency on missing numbers: Lusha doesn’t show how many mobile numbers it couldn’t find. As a user, it feels like you’re getting the full picture, but when you double-check the total leads, some are missing.

• Landlines count as “phone numbers”: Lusha includes direct landline numbers as valid phone numbers, even though we’re only interested in mobile numbers. This adds noise to the data.

• Multiple numbers per contact: In some cases, Lusha enriches two numbers for the same person. While that may sound useful, in practice it’s unclear which one is current or private. This can lead to wasted call attempts or outdated data.

Why Synce Performs Better

Synce stands out by focusing specifically on accurate and current mobile numbers. In practice, this means:

• More matches within a niche audience

• Cleaner data — no landlines included

• Externally verified through a validation system: We use Clearoutphone for our phone number validation. When a phone number is unvalid, we keep on searching in our waterfall without charging any credits to our users. You only get charged if it’s truly valid.

The result: sales teams save time and increase their chances of reaching the right person directly.

Conclusion

Both Lusha and Synce provide valuable data, but for sales in the Netherlands, Synce clearly comes out ahead.

• Find rate: higher with Synce (78.8% vs. 63.6%)

• Unique matches: more with Synce (9 extra mobile numbers)

• Data transparency: better handled by Synce with only verified phone numbers

• Pricing for 50 phone numbers: €0.50/phone number (Synce) vs. €0.598/phone number (Lusha)

For sales teams that want to prospect effectively in the Dutch market, Synce offers more more verified results against a lower price point.

Ask about the dataset or see for yourself here