Adapt.io vs Altss: A Category Mismatch (And What to Use Instead)
Adapt.io vs Altss isn't a real comparison - they're in completely different categories. Altss is a private-markets intelligence platform for fund managers hunting LP capital. Adapt.io is a B2B sales prospecting database for SDRs running outbound. Comparing them is like comparing Salesforce to Bloomberg Terminal.
We've seen this confusion come up repeatedly, so let's clear it up and then cover the alternatives that actually matter for B2B prospecting.
Our Picks (TL;DR)
- Raising a fund or targeting LPs? Altss. It covers 9,000+ family offices and 1.5M verified LP contacts. Nothing in the B2B sales stack touches this.
- Running B2B outbound sales? Prospeo. 98% email accuracy, 7-day data refresh, ~$0.01/email. It solves Adapt.io's two biggest complaints - credit caps and email accuracy - without a sales call.
- Want an all-in-one with built-in sequences? Apollo.io. But verify your lists separately - independent testing shows 25-35% bounce rates on Apollo-sourced emails.
What Is Altss?
Altss is a private-markets intelligence platform that helps fund managers find the right capital partners. It covers 9,000+ family offices, 30,000+ institutional investors, and 1.5M verified LP contacts globally. The platform verifies allocator status before inclusion, so you won't waste time on RIAs, broker-dealers, or wealth advisors mislabeled as institutional investors.
Data freshness is a core strength: every record is re-verified within 30 days, and key fields update in real time. Institutional LP coverage launched in February 2026, with a Q2 roadmap adding startup and company datasets. Pricing isn't public - expect custom quotes in the $5K-$25K/year range. Altss explicitly positions itself as not a CRM, not an email tool, and not a deal-sourcing platform like PitchBook or CapIQ.
Adapt.io's credit caps and email accuracy issues are its top G2 complaints. Prospeo eliminates both: 300M+ profiles, 98% verified email accuracy, and ~$0.01/email with no annual contract. Data refreshes every 7 days - not whenever they get around to it.
Stop rationing 500 credits a month. Get accurate data at scale.
What Is Adapt.io?
Adapt.io is a B2B lead intelligence platform with 150M+ contacts across 30M companies. It's built for SDRs, demand gen teams, and sales leaders who need targeted prospect lists with verified emails and phone numbers. The Chrome extension is the feature users love most - 71 mentions on G2 praising ease of use. All plans include unlimited users, and there's a 7-day free trial with no credit card required.
Here's the thing: the credit model is where frustration starts. The Starter plan at $49/mo gives you 500 email credits - roughly 23 per business day. That's not enough for serious outbound. Credit limits are the #1 complaint on G2 with 34 mentions, followed by credit-related charges at 24 mentions. Incorrect email addresses show up 14 times.
| Plan | Monthly | Annual | Email Credits | Phone Credits |
|---|---|---|---|---|
| Free | $0 | - | 25 | - |
| Starter | $49 | $490/yr | 500 | - |
| Basic | $99 | $990/yr | 1,000 | 100/month |
| Custom | Contact sales | - | Negotiable | Negotiable |
API access requires the Custom plan. Annual billing saves ~20%. Average implementation takes 4 months, with ROI at 16 months - a long ramp for a prospecting tool. On Reddit, Adapt.io shows up in sysadmin opt-out guides alongside ZoomInfo and Apollo, which tells you how widely its data gets used for cold outreach.
Adapt.io vs Altss: Side-by-Side
| Dimension | Adapt.io | Altss |
|---|---|---|
| Category | B2B sales prospecting | Private-markets LP intel |
| Target user | SDRs, demand gen | Fund managers, GPs |
| Database | 150M+ contacts, 30M companies | 9K family offices, 30K institutional investors |
| Contact scope | General B2B emails + phones | 1.5M verified LP contacts |
| Pricing | From $49/mo (credits) | Custom (~$5K-$25K/yr) |
| Data refresh | Not disclosed | 30-day re-verification |
| Best for | Outbound sales | Fundraising, capital raising |
These tools don't compete. If you're a VC-backed SaaS company that also needs to raise your next round, you'd run both in parallel - Adapt.io (or a better alternative) for sales pipeline, Altss for investor pipeline.
Best Adapt.io Alternatives for B2B Prospecting
Look, if your average deal size is under five figures and you're running lean outbound, you don't need a bloated all-in-one platform. You need accurate data and a separate sequencer. That combination outperforms every "do-everything" tool we've tested. If you want a broader shortlist, start with these sales prospecting databases and outbound lead generation tools.
Prospeo
Use this if you've been burned by bounced emails and want the highest accuracy in the category without negotiating an enterprise contract. (If you're comparing vendors, our breakdown of data enrichment services is a good companion read.)
Prospeo covers 300M+ professional profiles with 143M+ verified emails and 125M+ verified mobile numbers. The 98% email accuracy comes from a 5-step verification process with catch-all handling, spam-trap removal, and honeypot filtering. In our experience, the 7-day data refresh cycle makes a noticeable difference after the first month - contact databases go stale at roughly 2.5% per month, and the industry average refresh is 6 weeks. That gap compounds fast. If you're troubleshooting deliverability, see our guide to email bounce rate benchmarks and fixes.
Search filters go 30+ deep, covering buyer intent powered by Bombora across 15,000 topics, technographics, job changes, headcount growth, and funding signals. The Chrome extension has 40,000+ users. Pricing starts free - 75 verified emails/month and 100 Chrome extension credits/month. Paid plans run ~$0.01/email with no annual contracts. One of our customers, Snyk, dropped their bounce rate from 35-40% to under 5% and saw AE-sourced pipeline jump 180% after switching.
Skip this if you need a built-in email sequencer. Prospeo focuses on data quality and pairs with Smartlead, Instantly, or Lemlist for outreach. If you're building a repeatable outbound motion, these sales prospecting techniques help tighten targeting and messaging.
Apollo.io
Apollo is the #1 named alternative to Adapt.io on G2, and the free tier is genuinely generous - unlimited email credits (with limits), 5 mobile credits/month, 10 export credits/month, and basic sequence automation with 2 sequences. Paid plans run $49-$149/user/month.
The caveat is data quality. Apollo has 503 review mentions flagging inaccurate data - that's not a fringe complaint, it's a pattern. Independent testing shows 25-35% bounce rates versus their claimed ~91% accuracy. Apollo is the right pick if you want sequences and prospecting in one tool and don't mind running a separate verification step before sending. For teams already deep in the Apollo ecosystem, it works. For teams starting fresh, the data quality tradeoff deserves serious thought. If you do go this route, pair it with a dedicated verifier (see Bouncer alternatives) and follow an email deliverability guide before scaling volume.
UpLead
Reviewers consistently say UpLead is easier to do business with than Adapt.io, with better support and simpler admin. Plans run $74-$299/month on annual billing, with a 7-day free trial. It's best for small teams that want clean data without complexity. If you're also evaluating other vendors in this lane, our Coefficiy alternatives roundup is a useful cross-check.
ZoomInfo and Lusha are also common switches, though ZoomInfo starts around $15K/year and Lusha runs more expensive than Adapt.io per seat. Unless you're an enterprise team with budget to spare, neither makes sense as an Adapt.io replacement.
Snyk's 50 AEs dropped their bounce rate from 35-40% to under 5% and grew AE-sourced pipeline 180% with Prospeo. If bounced emails and stale data are costing you meetings, the fix is a 7-day refresh cycle and 5-step verification - not more credits from the same broken source.
Replace credit anxiety with pipeline. Start with 75 free verified emails.
FAQ
Is Altss the same as Adapt.io?
No. Altss is a private-markets intelligence platform for fund managers targeting family offices and institutional LPs. Adapt.io is a B2B sales prospecting database for SDRs and demand gen teams. They serve completely different markets and don't compete. You'd only use both if your company runs outbound sales and raises institutional capital.
Why do people leave Adapt.io?
Credit limits (34 G2 mentions) and incorrect email addresses (14 mentions) drive most churn. The Starter plan caps you at 500 emails/month - roughly 23 per business day - which isn't viable for serious outbound. Teams typically switch to tools with higher accuracy and more generous credit structures.
What's the most accurate Adapt.io alternative?
Prospeo delivers 98% verified email accuracy with a 7-day data refresh cycle, compared to the 6-week industry average. It also offers 125M+ verified mobile numbers with a 30% pickup rate - the strongest option for teams that have been burned by bounced emails from credit-constrained platforms.
Can I use a free tool instead of Adapt.io?
Apollo.io's free tier offers unlimited email credits and basic sequences, but expect 25-35% bounce rates without separate verification. Prospeo's free plan includes 75 verified emails and 100 Chrome extension credits monthly - fewer credits, but each contact is pre-verified at 98% accuracy, so you waste less on bounces and protect your sender reputation in the process.
