Flash Page Speed Optimizer vs LoadLess: Speed Optimizer
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026.
The short answer
- On the Shopify App Store: Flash Page Speed Optimizer 5.0 from 1 reviews and LoadLess 5.0 from 1 reviews.
- Paid plans start at $49/month for Flash Page Speed Optimizer and $9/month for LoadLess.
Head to head
Flash Pro
- · Auto Lazy-load images & iframes
- · Before/after Google PageSpeed scores
- · Optimize Page Speed & Core Web Vitals
- · Page targeting with on/off control
- · Unlimited Monthly Sessions
starter
- · Core Web Vitals dashboard
- · script inventory
- · theme health check
growth
- · Everything in Starter
- · one-click optimize
- · script rules
pro
- · AI recommendations
- · Everything in Growth
- · advanced monitoring
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureFlash Page Speed Optimizer speeds up your shop's loading process without any code or theme edits. How? By improving your Google PageSpeed Score, real users' CrUX metrics, and Core Web Vitals scores like TBT, LCP, and CLS through deferred scripts from third-party vendors, lazy image and iframe loading, and reduced render-blocking resources.
See which Shopify apps and scripts slow your store. LoadLess: Speed Optimize ranks script impact by app, tracks real-user Core Web Vitals (LCP, INP, CLS), estimates revenue at risk from slow pages, and delivers a theme health report with clear fixes. Defer, delay, or lazy-load chat, reviews, and marketing pixels with merchant-approved rules or one-click safe presets—no uninstalling required.
- Optimize Page Speed and Core Web Vitals (LCP, CLS, TBT) on mobile & desktop
- Check before-and-after Google PageSpeed scores inside the app
- One-click setup with no code or manual theme edits
- Choose which pages are optimized, with on/off control anytime
- Rank which apps and scripts slow your store, with real impact scores
- Track real-user Core Web Vitals: LCP, INP, and CLS from your storefront
- Defer, delay, or lazy-load chat, reviews, and pixels without uninstalling
- One-click safe optimization presets you approve before they go live
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 |  Flash Page Speed Optimizer |  LoadLess |
|---|---|---|
| Detected stores | Not published | 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 | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Flash Page Speed Optimizer | LoadLess |
|---|---|---|
| App Store rating | 5.0 ★ | 5.0 ★ |
| App Store reviews | 1 | 1 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Flash Page Speed Optimizer | LoadLess |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $49/month | $9/month(ahead) |
| Longest free trial | 5 days | Not listed |
| Plans listed | 1 | 3 |
Listing
| Measure | Flash Page Speed Optimizer | LoadLess |
|---|---|---|
| Shopify category rank | #83(ahead) | #172 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 2, 2026 | Jun 8, 2026 |
| Languages | 1 | 1 |
| Developer | Yash Sardhara | Wlek |
FAQ
Flash Page Speed Optimizer and LoadLess: common questions
- Is Flash Page Speed Optimizer or LoadLess cheaper?
- Paid plans start at $49/month for Flash Page Speed Optimizer and $9/month for LoadLess. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Flash Page Speed Optimizer or LoadLess?
- On the Shopify App Store: Flash Page Speed Optimizer 5.0 from 1 reviews and LoadLess 5.0 from 1 reviews.
- 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 Oct 13, 2026; 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 Oct 13, 2026. 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.