Omnisphere
Serum
Korg Legacy Collection
Traktor Pro
SynthMaster One
samplv1
Dexed
Nexus 2 is a synthesizing tool that comes with easy navigation columns, categories, presets, color tags, bookmarks, and other features, which makes it an easy-to-use but powerful software.

Truecaller
CallApp
Allo for Desktop (Unofficial)
Bad Numbers
Blacklist Blocker
Callblock
CallerSmart
Free Android app that automatically blocks telemarketing and scam calls, using official regulator data and community reports.

Which is more popular?
Based on our record, Nexus 2 seems to be more popular. It has been mentioned 7 times since March 2021.
Website, pricing, platforms and company facts side by side.
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N
Nexus 2
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|---|---|---|
| Website | refx.com | allociao.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from France · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Nexus 2 yet.
Allociao is a free Android app that automatically blocks telemarketing calls, robocalls, and phone scams, with no subscription or ads required for the core protection. Instead of relying on a single crowdsourced blocklist, Allociao combines two data sources: official phone numbering data...
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

No analysis of Nexus 2 yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing Nexus 2 and Allociao.
Allociao's answer:
Allociao combines two data sources instead of relying on one: official phone numbering data published by telecom regulators (200+ countries) and real-time community reports. It also detects wangiri/satellite scam prefixes that most call blockers miss, includes an on-device SMS phishing detector (SMS Guard), and its premium tier extends protection to family members with AI-based cross-signal detection between calls and texts. The free tier requires no account and no ads.
Allociao's answer:
Allociao's answer:
Everyday smartphone users tired of telemarketing and scam calls, and families who want to protect relatives (especially older parents) who are common targets of phone scams. The app started in France and is expanding internationally, with phone numbering data covering 200+ countries and a UI in 72 languages.
Allociao's answer:
Allociao was built by a solo developer frustrated with spam calls and unsatisfied with existing call-blocker apps that ask for heavy permissions or upload your address book. The goal was a privacy-respecting alternative that still works well, using public regulator data and community reports instead of harvesting user contacts.
Allociao's answer:
Allociao's answer:
Share your experience with using Nexus 2 and Allociao. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

If you are okay with spending money I would HIGHLY suggest reFX Nexus with the "edm" and "future house" packs (this is basically the only thing I use personally). Source: about 4 years ago
Ya it’s right here all you have to do is click buy now 💀https://refx.com/nexus/. Source: over 4 years ago
I noticed nobody said Nexus yet - so here you go. Source: over 4 years ago
Tracking Allociao since Jul 2026.
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Korg Legacy Collection is a suite of VST instruments that acts as an audio plugin software for integrating synthesizers and effects units into your digital audio workstation.
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A native desktop app for Google Allo
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