Cold calling tools · 2026
Free auto dialer for cold calling: which ones are actually free
Last updated September 3, 2026
"Free auto dialer" is one of the most misleading phrases in sales software. Type it into Google and the top results are a 7-day trial, a 14-day trial, a plan that dies at 25 calls a day, and an open-source project that expects you to run your own Linux server. Almost none of them are what you meant — software that just dials your list, all day, without a subscription. That tool does exist, but it works differently than the listicles assume, and the difference is worth understanding before you sign up for another "free" account you'll abandon in a week.
The short answer
The dialer software can be free forever — but the phone calls always cost a per-minute carrier rate somewhere. Capped tools (Calley) and trials (Kixie, autodialer.net) hide that; the honest version is a bring-your-own-carrier (BYOC) dialer: free software, your own Twilio account, and calls billed at wholesale (~$0.014/min) with no subscription and no per-seat fee. That's how DialSheet works.
The word "free," tool by tool — and the catch in each
Here's every option a search for "free auto dialer" actually returns, what part of it is free, and the string attached. Read the last column first — it's the one that decides whether the tool survives contact with a real cold-calling day.
| Tool | What's free | The catch | Free for real? |
|---|---|---|---|
| Calley (free tier) | Free for life, no card | Caps at 25 calls/day, 50-number list; dials through your phone SIM (mobile app), so you burn cell minutes and get no browser calling | Light follow-ups only |
| Kixie free power dialer | 7-day trial, no card | It is a trial, not a free plan — converts to paid seats after a week; up to 10 lines during the trial | Free for 7 days, then per-seat |
| autodialer.net | 14-day free trial | Trial, then paid; not a permanent free tier | Free for 14 days |
| ICTDialer (open source) | $0 software license | You self-host it on a Linux server and wire up your own SIP trunk — real engineering time and upkeep before a single dial | Server + SIP trunk + your labor |
| "Free" listicle picks (G2) | Filed under "free" | Most are free trials or freemium tiers with the dialer locked behind a paid plan; few are usable for volume cold calling at $0 | Usually a trial in disguise |
| BYOC dialer (DialSheet) | Free software, no per-seat | You bring your own Twilio account and pay the carrier ~$0.014/min at wholesale — the only real cost, and it is not marked up | Only your Twilio minutes |
Facts per each vendor's own site as of September 2026: Calley's free plan caps at 25 calls/day and 50 loaded numbers and routes through your phone's SIM; Kixie's free power dialer is a 7-day trial; autodialer.net is a 14-day trial; ICTDialer is open-source software you self-host.
The one model that's actually free: bring your own carrier
Every hosted dialer bundles two things and charges you for both: the software that dials and logs, and the telephony that carries the call. BYOC unbundles them. You keep the software — free — and plug in your own carrier account (Twilio is the common one) for the calls. Because you pay the carrier directly, there's no markup and no per-seat license sitting on top.
The trade is honest: you spend twenty minutes connecting a Twilio account instead of clicking "free trial." In return, the software cost drops to zero permanently, and your only bill is the raw per-minute rate — the same wholesale number a paid dialer pays before it adds its margin. For anyone doing real cold-calling volume, that's the version of "free" that doesn't evaporate after a week or stall at 25 calls.
$0 to the software — so what's your actual bill?
"Free" still leaves the minutes, so let's put a real number on them. Here's a full month for one rep making roughly 150 dials a day on a free BYOC dialer connected to Twilio — the dialer charges nothing, and every line below is Twilio's published rate, not a markup:
One rep, ~150 dials/day, free software — the whole bill
| Line item | Volume | Rate | Cost |
|---|---|---|---|
| Dialer software | Unlimited dials, unlimited calls | BYOC model | $0.00 |
| Caller-ID number on Twilio | 1 US local number | $1.15 / mo | $1.15 |
| Connected talk time | ~15 conversations/day × ~3 min | $0.0140 / min | ~$13.20 |
| Short/unanswered dials + voicemails | ~135/day, billed by the minute they ring | $0.0140 / min | ~$18.90 |
| Browser call leg on your talk time | ~900 min/mo | $0.0040 / min | ~$3.60 |
| All-in — $0 software, only Twilio usage | ~$37 / mo | ||
Under forty dollars a month, all of it Twilio, none of it software — for a rep dialing 150 times a day with no call cap. Compare that to a hosted dialer at $30–$149 per seat plus its own bundled, marked-up minutes. For the per-SKU breakdown, see our Twilio cold calling cost guide, or estimate your own numbers with the power dialer cost breakdown.
A free auto dialer that doesn't expire or cap you.
DialSheet is a free BYOC power dialer with a built-in CRM. Connect your Twilio account, load a list, and dial it end to end — no subscription, no per-seat fee, no daily call cap. You pay Twilio's wholesale rate for the minutes and nothing to the software. Free up to 500 leads and 500 calls a month; Pro is $29/month per 3-seat pack when you outgrow it.
Connect Twilio and dial freeHow to tell if a "free" dialer is really free
Before you create another account, run the tool through these five questions. If you can't answer all five from the pricing page, the "free" label is doing marketing work, not describing the product.
- ✓
Is it a plan or a trial?
A trial has an expiry date (7, 14, 30 days). A free plan does not. Search the pricing page for "trial" before you believe "free."
- ✓
What is the cap?
Free tiers throttle the thing you came for — daily call limits, list size, or a single seat. Calley's free plan stops at 25 calls a day.
- ✓
Who pays for the minutes?
Every call costs a carrier something. A "free" tool either uses your cell SIM, marks up bundled minutes, or lets you pay wholesale via BYOC. Find out which.
- ✓
Is there a per-seat fee later?
Many "free" dialers are free for one user and charge $30–$149 per additional seat. A team of five is where "free" quietly ends.
- ✓
Do you have to host it?
Open-source is $0 to license but not $0 to run — a server and SIP trunk you maintain is a real, ongoing cost in time and money.
Not legal advice. A free dialer is legal to use, but how you dial isn't automatically compliant. Scrub against the National and state Do Not Call registries, honor opt-outs, and call only within permitted hours. A rep-initiated power dialer avoids most of the ATDS questions that surround true auto and predictive dialers — but confirm the rules for your industry and target states with a compliance professional.
Auto dialer, power dialer, predictive dialer — which one is "free"?
Half the confusion around "free auto dialer" is vocabulary. When people search it, they almost always mean a power dialer: software that dials your list one number at a time and connects you when a human picks up, with you initiating each call. That's the everyday "stop copy-pasting numbers" tool. A predictive or robo dialer is a different animal — it machine-dials many numbers at once with no human in the loop, which is what draws the strictest TCPA/ATDS scrutiny.
For cold calling on a budget, the power dialer is both what you want and the lower-risk option, and it's the category where a genuinely free BYOC tool exists. If you're weighing the parallel-dialing versions that dial several lines at once, our parallel dialer vs power dialer comparison walks through the trade-offs.
Questions people actually ask
Is there a truly free auto dialer for cold calling?
Yes, but "free" splits into two very different things. Free-with-a-cap tools like Calley give you a lifetime-free plan limited to 25 calls a day through your phone's SIM — fine for a handful of follow-ups, useless for real prospecting. The genuinely unlimited route is a bring-your-own-carrier (BYOC) dialer: the software is free, and you connect your own Twilio (or similar) account and pay only the wholesale call rate, roughly $0.014 a minute, straight to the carrier. There is no software subscription and no per-seat fee. DialSheet works this way. So the honest answer is: the software can be free forever, but the phone calls themselves always cost a per-minute carrier rate somewhere — the question is whether a vendor marks that up or you pay it at cost.
Is Calley's auto dialer really free?
Calley has a real "free for life" plan, but per its own site it caps you at 25 calls per day and a loaded list of 50 numbers, and it dials through your phone's GSM SIM as a mobile app — so you talk on your cell minutes and there is no browser calling or CRM-grade logging. That is genuinely free for light, low-volume outreach. It is not built for someone making 100+ dials a day; you hit the daily cap after 25 calls and wait until tomorrow. Most "free auto dialer" lists rank Calley first precisely because so few tools offer any permanent free tier at all.
What is the catch with "free" auto dialers?
There are four common catches. (1) It is a trial, not a free plan — Kixie's free power dialer is 7 days, autodialer.net is 14 days, then it converts to paid. (2) It is capped — Calley's free tier stops at 25 calls a day. (3) It is free software you have to host yourself — open-source dialers like ICTDialer cost nothing to license but require you to stand up and maintain a Linux server plus a SIP trunk. (4) The software is free but the calls are marked up. The cleanest model avoids all four: free software, your own carrier account, and calls billed at the carrier's wholesale rate with no markup and no seat fee.
Can I make unlimited cold calls for free?
You can make unlimited calls with free software, but the minutes themselves are never truly free — a carrier connects every call and bills for it. With a BYOC dialer you remove the software cost entirely (no subscription, no per-seat) and pay only your carrier's per-minute rate. On Twilio that is about $0.014 per connected minute for US calls plus $1.15 a month per phone number. So 150 dials a day, most of them short or unanswered, lands around $30–$50 a month in pure Twilio usage with $0 going to the dialer. "Unlimited and free software" is real; "unlimited and zero telephony cost" is not, on any tool.
Do free auto dialers charge per minute?
The software may not, but a phone call always has a per-minute cost to somebody. Mobile-SIM tools like Calley push that onto your cell plan's minutes. Hosted paid dialers bundle per-minute charges (and often phone-number and per-seat fees) into their subscription and mark them up. A BYOC dialer is the most transparent: the software adds $0 and you see the exact per-minute rate on your own carrier invoice, at wholesale. You are always paying for minutes — the only variable is the markup.
Is an auto dialer the same as a power dialer?
In everyday searches, "auto dialer" usually means "software that dials my list for me so I stop copy-pasting numbers" — which is what a power dialer does: it dials one number at a time and connects you when a human answers, with a person initiating each call. That is different from a predictive or robo dialer that machine-dials many numbers at once without human intervention. The distinction matters legally: dialers that place calls automatically without a human pressing the button per call fall under stricter TCPA/ATDS scrutiny, while a one-at-a-time, rep-initiated power dialer is treated more like manual dialing. When people ask for a "free auto dialer" for cold calling, a power dialer is almost always what fits.
Is it legal to use a free auto dialer for cold calling?
The tool being free has nothing to do with legality — what matters is how you dial and who you call. Scrub your list against the National Do Not Call Registry and your state DNC lists, honor opt-outs, call only within permitted hours, and identify yourself and your business. A rep-initiated power dialer (one call at a time, human-triggered) avoids most of the ATDS questions that surround true auto/predictive dialers. This is general information, not legal advice; confirm the rules for your industry and target states with a compliance professional before you scale.