---
title: "Trial conversion levers ranked by evidence"
url: "https://trialvalid.com/blog/trial-conversion-levers-ranked-by-evidence.md"
canonical_url: "https://trialvalid.com/blog/trial-conversion-levers-ranked-by-evidence"
last_updated: "2026-10-19"
type: "guide"
summary: "Seven ways to convert more trials, ranked by the strength of the published evidence, with a plain note where no source gives a number."
related: ["https://trialvalid.com/trial-conversion-rate-calculator.md", "https://trialvalid.com/failed-payment-recovery-calculator.md", "https://trialvalid.com/pricing.md", "https://trialvalid.com/blog.md"]
---

# Trial conversion levers ranked by evidence

> **For AI agents:** the complete index of TrialValid pages is [llms.txt](https://trialvalid.com/llms.txt). Every page is also served as markdown at its URL plus .md.

Seven ways to convert more trials, ranked by the strength of the published evidence, with a plain note where no source gives a number.

> Ranked by the strength of the evidence in sources we read, the order is: a card before the trial, recovery of failed first charges, a reminder before the first charge, and then a group of levers where the sources give no number at all.

## How this ranking works

Most lists of conversion tactics rank by how clever the tactic sounds. This one ranks by what the sources we read can support, and it says plainly where they support nothing. Each lever gets one of three grades. Grade A means a published measurement exists, even if it is a survey average and not a controlled test. Grade B means the vendor documents the behavior or publishes an average over its own customers, with no comparison group. Grade C means the sources describe the lever and give no figure for its effect.

The ranking is ours, it covers only the sources listed at the end, and it will change when better data appears. It is also not a ranking of size. A lever with strong evidence of a small effect can sit above one with a rumored large effect, because the point is knowing what you are buying before you spend a month on it.

## The ranking at a glance

| Rank | Lever | Grade | What the sources show |
| --- | --- | --- | --- |
| 1 | Ask for a card before the trial | A | Survey: 30% free-to-paid for card-required trials, and 10.5 payers per 1,000 visitors against 3.6 without a card |
| 2 | Recover failed first charges | B | Stripe publishes 55% average recovery and recommends 8 tries within 2 weeks |
| 3 | Remind the buyer before the first charge | C | Stripe sends a reminder 7 days ahead by default; no source measures the effect |
| 4 | Choose the trial length | C | 14 days is the most common length; no source compares lengths |
| 5 | Use a paid or small-price trial | C | 4% of products lead with one; no conversion figure is published |
| 6 | Shorten the path to first value | C | The report asks when users reach the moment of value; no figure |
| 7 | Change the price | C | No source reports an effect; arithmetic and your own test are the only guides |

## Rank 1: ask for a card before the trial (grade A)

The ChartMogul conversion report is the strongest public evidence on this question that we found. It surveyed 200 products in January 2026 and reports 30% free-to-paid conversion for trials that require a card, more than five times the rate of trials that do not. The median across all products is 8%. The per-visitor view adds the cost, which is fewer sign-ups.

| Entry model | Sign-ups per 1,000 visitors | Paying customers per 1,000 visitors | Paying share of sign-ups |
| --- | --- | --- | --- |
| Card required before the trial | 35 | 10.5 | 30.0% |
| Ungated freemium (use before sign-up) | 70 | 5.6 | 8.0% |
| Freemium | 90 | 5 | 5.6% |
| Free trial, no card | 45 | 3.6 | 8.0% |

By this table a card-required trial produces about 2.9 times the paying customers per 1,000 visitors of a trial with no card, and more than either freemium row. Three cautions apply. The data is self-reported in a survey. The products that ask for a card may be the ones where buyers are more serious, so the card may not be the whole cause. And the number of people using the product, which matters for products that grow by word of mouth, is highest for the ungated model. The report itself says that if adoption is the goal, opening the product up may serve better, and if conversion is the goal, requiring a card is likely better.

## Rank 2: recover failed first charges (grade B)

Stripe documents Smart Retries with a recommended default of 8 tries within 2 weeks, and publishes 55% as the average share of failed payments recovered by businesses on Stripe Billing. Neither is a controlled comparison, and the second is Stripe's own figure, so the grade is B. The lever only touches the share of charges that fail. Using the [failed payment recovery calculator](https://trialvalid.com/failed-payment-recovery-calculator.md) with $147 failing each month from a $2,940 cohort at a 5% failure rate and a 40% recovery rate today, the unrecovered amount is $1,058.40 a year. That is a bounded prize, and the setting is free, so it earns second place.

## Rank 3 and below: where the evidence is absent

The levers below are common in advice and well supported as mechanisms. The sources we read give no number for their effect on conversion, so each is grade C. That does not mean they do not work. It means a claim of a specific percentage gain from any of them has no support here.

### A reminder before the first charge

Stripe sends a reminder 7 days before a trial ends when customer emails are on, and exposes an event three days out for products that send their own. The report's author argues that a reminder lowers the risk of fewer sign-ups, weaker early retention and more refund requests, and points to a 30 day trial that promises one. It is an argument with an example, not a measurement. The reminder costs little to turn on.

### The length of the trial

The report lists how common each length is among the products it surveyed and gives no conversion by length. Choose a length from how long your product takes to show its value, then watch your own cohorts.

| Trial length | Share of products using it |
| --- | --- |
| 14 days | 62% |
| 7 days | 14% |
| 30 days | 14% |

### A paid or small-price trial

Stripe supports paid trials, with its documentation giving 1 USD for the first week as a typical shape. The report counts 4% of products as leading with a paid trial and gives no conversion rate for them. A paid trial may filter for intent like a card does, but this is a hypothesis.

### Shortening the path to first value

The report closes with three questions for anyone changing a trial. The second is at what point a user reaches the moment of value, immediately or after real setup. It publishes no figure, and this is probably the lever with the largest range of outcomes, because it depends entirely on the product. Measure the share of trials that reach your own first-value event and compare those who do with those who do not.

### Changing the price

No source here reports the effect of a price change on trial conversion. The arithmetic of break-even is exact, and the sample size needed to test it is calculable. Both are in the [pricing test guide](https://trialvalid.com/blog/pricing-tests-during-trials.md).

## How to use the ranking

1. If you do not ask for a card, decide whether the extra payers per 1,000 visitors are worth the lost sign-ups for your product, using your own numbers in the table above.
2. Turn on the free recovery settings whatever you decide above, because they cost a few minutes.
3. Turn on the trial reminder, then watch cancellations and refund requests around the first charge.
4. Pick one grade C lever per month, say in advance what you expect it to change, and compare cohorts.
5. Replace this ranking with your own as soon as your cohort data disagrees with it.

To put a number on any of these, use the [trial conversion rate calculator](https://trialvalid.com/trial-conversion-rate-calculator.md). A single point on a cohort of 400 trials at 15% and $49 is 4 extra customers and $196 of extra monthly revenue.

## Questions about the ranking

### Why is the card requirement first if it reduces sign-ups?

Because it is the only lever with a published per-visitor comparison, and the comparison shows more payers per 1,000 visitors on average despite fewer sign-ups.

### Does grade C mean a lever does not work?

No. It means the sources we read give no figure for its effect, so any specific gain claimed for it is unsupported here.

### Can I trust the survey numbers?

Treat them as averages from a self-reported survey of 200 products. They are a reasonable prior and not a promise for your product.

### Which lever is cheapest to try?

The recovery settings and the trial reminder, which are configuration in Stripe and need no development.

### Will this ranking change?

Yes. It will change when a better source appears, and it should change when your own cohorts say something different.

## Sources

- ChartMogul, The SaaS Conversion Report (Kyle Poyar, 4 Feb 2026): [https://chartmogul.com/reports/saas-conversion-report/](https://chartmogul.com/reports/saas-conversion-report/), read 19 Oct 2026.
- Stripe Billing product page: [https://stripe.com/billing](https://stripe.com/billing), read 19 Oct 2026.
- Stripe documentation, Automate payment retries: [https://docs.stripe.com/billing/revenue-recovery/smart-retries](https://docs.stripe.com/billing/revenue-recovery/smart-retries), read 19 Oct 2026.
- Stripe documentation, Automate customer emails: [https://docs.stripe.com/billing/revenue-recovery/customer-emails](https://docs.stripe.com/billing/revenue-recovery/customer-emails), read 19 Oct 2026.
- Stripe documentation, Manage compliance requirements for trials and promotions: [https://docs.stripe.com/billing/subscriptions/trials/manage-trial-compliance](https://docs.stripe.com/billing/subscriptions/trials/manage-trial-compliance), read 19 Oct 2026.
- Stripe documentation, Configure trial offers on subscriptions: [https://docs.stripe.com/billing/subscriptions/trials](https://docs.stripe.com/billing/subscriptions/trials), read 19 Oct 2026.

## Related

- [Trial Conversion Rate Calculator](https://trialvalid.com/trial-conversion-rate-calculator.md)
- [Failed payment recovery calculator](https://trialvalid.com/failed-payment-recovery-calculator.md)
- [Plans from $29 with a 14-day trial for $1](https://trialvalid.com/pricing.md)
- [TrialValid blog: trial guides and tool reviews](https://trialvalid.com/blog.md)