Adapt.io vs Gigasheet: Different Tools, Different Jobs
We keep seeing Adapt.io and Gigasheet lumped together on "alternatives" lists, and it's genuinely confusing - these tools don't belong in the same bucket. Adapt.io is a B2B contact database built for outbound prospecting. Gigasheet is a big-data spreadsheet built to crunch huge files and optionally enrich rows through third-party APIs. Here's what each tool actually does, and which one you should pick.
30-Second Verdict
Use Adapt.io if you want a classic prospecting workflow - search, grab emails and phones, export - and you can live with credit limits. (If you're comparing more sales prospecting techniques, this is the “database + export” lane.)
Use Gigasheet if you need to work with massive datasets (think millions of rows) and want spreadsheet-style enrichment powered by providers like RevenueBase, Apollo, Hunter, or People Data Labs. (If you’re evaluating data enrichment services, this is more “enrichment workflow” than “data source.”)
Skip both if your top priority is verified B2B emails with high accuracy and no daily caps. Prospeo delivers 98% email accuracy, refreshes data every 7 days, and starts free with 75 emails per month. If deliverability is the constraint, see our email deliverability guide.
What Each Tool Does
Adapt.io
Adapt.io is a straightforward B2B contact database for sales teams. Filter for the right people, pull emails and phone numbers, export into your CRM or sequences. The Chrome extension is the best part - when you're moving fast, grabbing contact data from the web without breaking your flow matters a lot. (If you’re shopping this category, compare SDR tools and sales prospecting databases.)
Adapt.io has a strong footprint on G2 with a 4.6/5 rating across 2,789 reviews. The pattern is consistent: people love the convenience of the extension and workflow, and they get frustrated by limited credits and incorrect email addresses. A Reddit thread from someone using Adapt.io focused heavily on converting contacts into booked meetings, which tells you exactly what users care about - deliverability beats "database size" every time. (Related: email bounce rate.)
Pricing is credit-based. The Free tier includes 25 Email Credits, 25 Enrichment Credits, and 25 contacts per day. Starter runs $49/month for 500 Email Credits and 500 Enrichment Credits at 50 contacts/day. Basic is $99/month for 1,000 Email Credits, 1,000 Enrichment Credits, and 100 Phone Credits at 100 contacts/day. Custom plans add API access and team features. Here's the thing: if you're doing real outbound volume, the lower tiers feel tight fast.
Gigasheet
Gigasheet isn't a prospecting tool. It's a big-data spreadsheet built for analyzing huge datasets, and it's increasingly known for healthcare price transparency workflows. The company reports 150,000+ users and 13.75 trillion cells processed - this is analytics-first, not sales-first.
Row limits depend on the tier. Premium Individual supports up to 25 million rows per sheet, while MRF Explorer handles up to 1 billion rows for large-scale healthcare price transparency analysis including payer-negotiated rates. MRF Explorer is priced at $295/user/month billed annually ($3,540/year). On G2, Gigasheet sits at 4.9/5, but with only 23 reviews - useful signal, small sample.
Gigasheet can enrich data, but it routes your file to third-party providers like Apollo and Hunter. The free Community tier includes 1,000 enrichment credits per month. Premium Individual runs $75/user/month billed annually ($95 month-to-month). For sales teams, this is a clunky way to get contacts: you're paying for a spreadsheet platform, then paying again for the underlying data provider. That two-layer cost structure adds up quickly, and you're still dependent on whatever accuracy the third-party source delivers. (If you’re trying to do this at scale, you may want a dedicated lead enrichment workflow instead.)
Adapt.io caps your contacts at 25/day. Gigasheet routes you through third-party providers you can't control. Prospeo gives you 300M+ profiles with 98% email accuracy, refreshed every 7 days - no middlemen, no daily limits.
75 free verified emails per month. No contracts, no credit caps.
Side-by-Side Feature Comparison
| Category | Adapt.io | Gigasheet | Winner |
|---|---|---|---|
| Primary job | Prospecting + list building | Big-data analysis | Adapt.io (sales) / Gigasheet (analytics) |
| Contact database | 61M+ contacts | No native database | Adapt.io |
| Enrichment model | Built-in contact lookup | Third-party API enrichment | Adapt.io (simpler) |
| Email accuracy signal | Not disclosed | Varies by connected provider | Depends on provider |
| Reviews | 4.6/5 (2,789) | 4.9/5 (23) | Adapt.io (confidence via volume) |
| Free tier | 25 contacts/day + credits | 1,000 enrichment credits/month | Gigasheet (more flexible) |
| Paid starting point | $49/month | $75/user/month (annual) | Adapt.io (lower entry) |
| Chrome extension | Yes | No | Adapt.io |
| Scale | Typical B2B list exports | Up to 1B rows/sheet | Gigasheet |
| Sales handoff | CRM exports + sales workflows | CSV exports for large files | Adapt.io |
Let's be honest: if your average deal size is under $10k, you don't need "big data" anything. You need accurate emails, clean lists, and fast iteration. Gigasheet is powerful, but it's the wrong hammer for most sales nails. (If you’re building a repeatable motion, start with a lead generation workflow.)
Who Should Skip Both
If you came here comparing Adapt.io vs Gigasheet for reliable B2B contact data, we wouldn't build a prospecting motion around Adapt.io's caps or Gigasheet's indirect enrichment loop. In our testing, Prospeo kept bounce rates under 4% because it verifies emails at 98% accuracy and refreshes data every 7 days - the industry norm is closer to 6 weeks. It also runs on proprietary email-finding infrastructure, so you aren't stuck with the same third-party pipes everyone else uses. (More on list hygiene: spam trap removal.)
With 300M+ professional profiles and 30+ search filters including buyer intent, technographics, and job change signals, Prospeo covers the prospecting workflow end to end. The Chrome extension (40,000+ users) lets you pull verified emails and direct dials from any website or CRM in one click. Free includes 75 verified emails and 100 Chrome extension credits per month, with self-serve signup and no contracts. (If you’re comparing options, see free lead generation tools.)
Bounce rates kill domain reputation faster than low volume kills pipeline. Prospeo's proprietary email infrastructure keeps bounce rates under 4% - while Adapt.io reviewers keep flagging bad emails on G2. At $0.01 per email, accurate data costs less than one bounced send.
Stop paying for emails that bounce. Start with 75 free verified contacts.
FAQ
Is Gigasheet a prospecting tool?
No. Gigasheet is a big-data spreadsheet for analyzing massive datasets, not a B2B contact database. It can enrich rows through third-party providers like Apollo and Hunter, but it lacks native prospecting workflows - list building, sequencing, CRM handoff - that sales teams need day to day.
Why are Adapt.io emails bouncing?
G2 reviewers consistently flag incorrect email addresses and limited credits as recurring pain points. If you're running outbound at real volume, that combination burns credits fast and pushes bounce rates above safe thresholds for domain reputation. The consensus on r/sales is that email accuracy matters more than database size, and Adapt.io's verification doesn't always hold up under pressure.
What's a good alternative to both tools for email finding?
For teams focused on outbound, Prospeo delivers 98% email accuracy with a 7-day data refresh cycle compared to the 4-6 week industry average. Bounce rates stay under 4% for most teams. The free tier includes 75 verified emails per month - more generous than Adapt.io's 25 daily credits and far more direct than Gigasheet's third-party enrichment loop.