Features, use cases, pros and cons, and pricing side by side — and which one to pick.
Best for: WooCommerce store owners who want to reduce cart abandonment by showing real-time purchase activity, New or growing websites that need to establish credibility quickly with limited existing social proof
Read the full NotificationX reviewBest for: Online businesses that want more leads from traffic they already have, Marketers testing social proof as a conversion lever
Read the full Proof reviewCommission may apply at no extra cost
Compare key features side by side
Feature Comparison Summary
NotificationX turns your site's real activity — purchases, signups, reviews, and downloads — into popups that build trust with hesitant visitors. It's WordPress-only, though, and it needs genuine data to work, so quiet or brand-new sites won't get much out of it. Overall, it's a low-risk way to add social proof, especially since you can start on the free plan and measure the lift before paying.
Proof turns live visitor activity into conversion nudges, and every Pulse plan includes A/B testing, analytics, and unlimited domains starting at $24 a month. The trade-offs: headline results come from vendor case studies, Pulse tiers only differ in traffic limits, and Experiences jumps to $599. Overall, it's a low-risk pick for sites with steady traffic.
NotificationX is a social proof marketing tool that displays real-time notification popups on your website. These popups can show recent purchase activity, customer reviews, email subscription counts, download stats, and other live data pulled from sources like WooCommerce, Google Analytics, and review platforms. It works on eCommerce stores and regular content or business websites alike, and it integrates directly with WordPress as a plugin.
Proof is a social proof marketing platform built around its flagship product, Proof Pulse. The company says 25,000+ online businesses use it to convert visitors into leads and sales. It targets marketers and online businesses that want website personalization without a heavy technical project. Proof is a Y Combinator Winter '18 graduate based in Austin, Texas, and offers a 14-day free trial of Pulse.
List prices from each vendor's pricing page, before taxes and add-ons. Costs are per month.
| Pricing compared | NotificationX | Proof |
|---|---|---|
| From (cheapest paid plan) | $4.08/mo Individual | $29/mo Basic |
| Free plan | No | No |
| Free trial | Not stated | 14 days |
| Money-back guarantee | Not stated | Not stated |
| Annual billing savings | — | Up to 17% |
| Pricing model | Flat price | Flat price |
| Cost for 1 user | $4.08/moCheaper Individual plan, billed annually | $24/mo Basic plan, billed annually |
| Cost for 5 users | $4.08/mo Individual plan, billed annually · price per account (user limit not stated) | $24/mo Basic plan, billed annually · price per account (user limit not stated) |
| Cost for 10 users | $4.08/mo Individual plan, billed annually · price per account (user limit not stated) | $24/mo Basic plan, billed annually · price per account (user limit not stated) |
| Cost for 25 users | $4.08/mo Individual plan, billed annually · price per account (user limit not stated) | $24/mo Basic plan, billed annually · price per account (user limit not stated) |
| Plans | 5 | 9 |
| Prices checked | Checked Nov 6, 2026 | Vendor page checked Nov 6, 2026 |
| Price history | Tracking prices since Oct 1, 2026. No price change detected yet. | Tracking prices since Sep 9, 2026. No price change detected yet. |
For 1 user (billed annually), NotificationX costs $4.08/mo vs Proof at $24/mo.
Computed from published list prices on the dates shown. Excludes taxes, add-ons and promotions.