Why almost nothing here is free
A dialer costs its vendor money on every call. If the vendor also sells you the telephony, a free plan means giving away minutes, and no company does that at scale. That is the entire reason the free power dialer category is full of trials.
The exception is the bring-your-own-carrier model. If the software never touches the phone call, giving the software away costs the vendor almost nothing. That is why DialSheet can offer a permanently free plan and PhoneBurner cannot: DialSheet is not paying for your minutes, Twilio is billing you for them directly.
Understanding that distinction tells you which free offers can possibly be sustainable. Any vendor that bundles minutes and advertises a free power dialer is running a trial, a credit cap, or both.
What free actually costs
Free software still means paid calls. Here is the real monthly bill for one person dialing 100 numbers a working day on a free plan with their own Twilio account:
| Line item | Cost |
|---|
| Software | $0 |
| One local phone number | $1.15/month |
| ~1,000 billable minutes | ~$14/month |
| Total | ~$15/month |
That is the honest number, and it is still an order of magnitude below any paid tier in this category. A rep on PhoneBurner Standard pays $140 a month for software before making a single call.
Note the billing quirk that most cost calculators skip: carriers bill per call rounded up to the whole minute, and a voicemail that picks up bills a full minute even if you hang up after ten seconds. Unanswered rings cost nothing. At 100 dials a day with a 22 percent voicemail rate, that is about 22 wasted minutes a day you should budget for.
The caps to check before you commit
Every free plan has a wall. These are the ones that actually stop people:
- Lead cap. DialSheet's free plan holds 500 leads. If your list is 3,000 records, the free plan will not hold it, and that is usually the first reason people upgrade.
- Call cap. 500 calls a month is about 25 a working day. A serious full-time dialer will pass it in the first week.
- Seats. Free plans here are single user. Teams start at the paid tier by design.
- Recordings. On DialSheet's free plan, recordings live in your own Twilio console rather than in the app. That is a genuine limitation and also a genuine feature, because they are your files.
Free trials, ranked by how much you can learn
If a free plan will not fit, a trial is the next best thing, and their length varies more than it should.
- JustCall and Myphoner: 14 days. Long enough to work a real list, measure connect rates and see whether the tool holds up on your office network.
- CloudTalk and Dialpad: 14 days. Same, with the caveat that CloudTalk's dialers are add-ons you need enabled during the trial.
- Aircall and Ringover: 7 days. Enough to test setup and call quality, not enough to measure outcomes.
- Kixie: 7 days, no card. The no-card part is genuinely good practice.
- Orum: 500 dials. About one day of work for one rep. Not an evaluation.
The trial mistake almost everyone makes is spending the first four days on setup and the last day panicking. Import your list on day one, dial on day two, and decide by day five.
What to do if you outgrow free
The paid tiers here span an order of magnitude, so the upgrade decision matters more than the free decision.
The cheapest real upgrade is a pack-priced plan: $29 a month covers three seats, which is $9.67 a user, and telephony stays wholesale. The cheapest mainstream upgrade is JustCall Pro at $49 a seat with unlimited minutes included. Everything above that is buying integrations, parallel lines or a CRM.
If you are upgrading purely because you hit a lead cap, check whether the cap is the only thing you need lifted. Several tools sell a much more expensive tier to solve that one problem.