FormGuard ‑ Spam Blocker vs Promo Shield
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 9, 2026 for FormGuard, Oct 14, 2026 for Promo Shield.
The short answer
- Both list a free plan. Paid plans start at $7.99/month for FormGuard and $5/month for Promo Shield.
Head to head
- United States
- Australia
- Belgium
Free
- · Spam dashboard with block reasons
- · Stops automated contact form spam
- · Up to 10 blocked keywords
Pro
- · AI filter for sales pitches
- · Blocked messages inbox, kept 30 days
- · Everything in Free
- · Up to 200 blocked keywords
Free
- · 50 messages/month
- · Email forwarding
- · Messages saved for 30 days
- · Spam detection
Premium
- · Messages saved for unlimited time
- · Unlimited messages
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureFormGuard stops spam on your Shopify contact form without adding a captcha, so real customers fill it in as usual. Every submission is checked in the visitor's browser for a hidden honeypot field, forms filled too fast, no real typing, repeat submits, and your own blocked keywords and email addresses.
PromoShield helps merchants reduce unwanted promotional messages submitted through their contact forms. Many stores receive frequent inquiries from marketing and SEO services that make it harder to notice real customer questions. PromoShield filters these messages automatically before they reach the merchant’s inbox.
- Honeypot detection catches bots with invisible form fields
- Time-based filtering blocks instant automated submissions
- Custom keyword blocking for specific words and email addresses
- Automatically filters promotional and marketing messages from contact form.
- Separates promotional inquiries from real customer messages for easier review.
- Replaces the standard contact form without requiring theme edits.
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  FormGuard |  Promo Shield |
|---|---|---|
| Detected stores | 32 | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Apparel & Accessories, Home & Garden, Food, Beverages & Tobacco | Not published |
| Top store countries | United States, Australia, Belgium | Not published |
Reviews
| Measure | FormGuard | Promo Shield |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 1 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | FormGuard | Promo Shield |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $7.99/month | $5/month(ahead) |
| Longest free trial | 7 days | Not listed |
| Plans listed | 2 | 2 |
Listing
| Measure | FormGuard | Promo Shield |
|---|---|---|
| Shopify category rank | #15 | #113 |
| Shopify App Charts | #3 in Security - Other | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 4, 2026 | Mar 3, 2026 |
| Languages | 1 | 1 |
| Developer | NS Labs | Aybar Digital |
FAQ
FormGuard and Promo Shield: common questions
- Is FormGuard or Promo Shield cheaper?
- Both list a free plan. Paid plans start at $7.99/month for FormGuard and $5/month for Promo Shield. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 9, 2026 for FormGuard, Oct 14, 2026 for Promo Shield; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 9, 2026 for FormGuard, Oct 14, 2026 for Promo Shield. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.