PurpleFire review

Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 25% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 16 · Strong 7 · Weak 1 · Poor 1. The typical agency here scores Excellent, and none scores higher than this one.

What this dimension measures: Runs statistically-valid experiments: proper sample sizes/power, avoids peeking, sequential/Bayesian methods, honest win-rate reporting.

Scores high — Named testing methodology and honesty about losers/flat tests score 4-5.

Scores low — 'We A/B test button colors' or claims of 90%+ win rates score 1-2 (a red flag).

What we found — The agency centers its CRO offer on A/B testing and publishes a large result library. That is the high band above, which is why it scored Excellent.

CRO — conversion-rate optimization: raising the share of visitors who buy or sign up through structured testing, not redesign by taste.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 18% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 13 · Strong 10 · Adequate 1 · Weak 1. The typical agency here scores Excellent, and 13 of them score higher than this one.

What this dimension measures: Grounds tests in real research: heuristic analysis, analytics, session replay, surveys, user testing, not guesses.

Scores high — Research-led hypotheses score 4-5.

Scores low — Best-practice checklists with no research score 1-2.

What we found — Its program includes audits, user and funnel analysis, design, and optimization. That is the high band above, which is why it scored Strong.

funnel — the path from stranger to customer — awareness at the top, purchase at the bottom. “Full-funnel” means owning the whole path, not one stage.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 6 · Strong 17 · Adequate 2. The typical agency here scores Strong, and 6 of them score higher than this one.

What this dimension measures: Can design AND build high-converting pages/sites fast (not just recommend).

Scores high — In-house design + dev score 4-5.

Scores low — Recommendations handed back to the client's team score 2-3.

What we found — Landing pages, ecommerce design, implementation, and ongoing optimization are visible. That is the high band above, which is why it scored Strong.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 7 · Strong 14 · Adequate 4. The typical agency here scores Strong, and 7 of them score higher than this one.

What this dimension measures: Sound measurement: clean analytics implementation, event tracking, attribution, and guarding against false positives.

Scores high — Strong analytics score 4-5.

Scores low — Reliance on platform vanity dashboards scores 2.

What we found — ROI and extra-revenue reporting are prominent, while calculation and attribution methods require audit. That is the high band above, which is why it scored Strong.

attribution — working out which marketing touch actually caused a sale. Good practice names its model and its blind spots; bad practice quotes each ad platform’s self-graded numbers, which overlap and overclaim.

Evidence: inferred — our reading of indirect evidence, not a documented fact.

Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 12% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 13 · Strong 10 · Adequate 2. The typical agency here scores Excellent, and none scores higher than this one.

What this dimension measures: Reports revenue-per-visitor / incremental revenue lift, not just conversion-rate deltas on micro-conversions.

Scores low — Revenue-lift focus scores 4-5; micro-conversion vanity scores 1-2.

What we found — Cases explicitly report extra revenue, ROI, conversion lift, and sales growth.

On the record — “A featured case reports a 24.8% conversion-rate lift and 280% revenue lift alongside a 3.0x ROI claim.” purplefire.io ↗

On the record — “PurpleFire publishes more than 200 CRO success stories with extra-revenue and ROI fields across ecommerce brands.” purplefire.io ↗

Evidence: vendor stated — the agency’s own claim, recorded as theirs rather than ours.

Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 8% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 7 · Strong 8 · Adequate 10. The typical agency here scores Strong, and 7 of them score higher than this one.

What this dimension measures: Deep in the buyer's actual stack (Shopify for ecom, Webflow/Next for B2B/SaaS).

Scores low — Match scores 4-5; mismatch/generalist scores 2-3.

What we found — Ecommerce implementation depth is clear, while a platform-by-platform capability matrix is not public.

B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.

SaaS — software as a service: subscription software; as a client type it brings recurring revenue and metrics like churn and lifetime value.

Evidence: inferred — our reading of indirect evidence, not a documented fact.

Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 4% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 10 · Strong 15. The typical agency here scores Strong, and none scores higher than this one.

What this dimension measures: Ecommerce CRO vs B2B SaaS/lead-gen CRO are different crafts.

Scores low — Named clients matching the buyer score 5; mismatch scores 1-2.

What we found — Purpose-built for ecommerce brands with enough traffic and revenue to support experimentation.

On the record — “PurpleFire publishes more than 200 CRO success stories with extra-revenue and ROI fields across ecommerce brands.” purplefire.io ↗

CRO — conversion-rate optimization: raising the share of visitors who buy or sign up through structured testing, not redesign by taste.

B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.

SaaS — software as a service: subscription software; as a client type it brings recurring revenue and metrics like churn and lifetime value.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Weak — 2 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 3% of the total score.

Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 2 · Strong 4 · Adequate 8 · Weak 8 · Poor 3. The typical agency here scores Adequate, and 14 of them score higher than this one.

Scores high — Month-to-month or short terms with a pricing anchor score 4-5.

Scores low — 12-month lock-ins or bespoke-only score 2.

What we found — No reliable public fee, minimum term, or experiment-ownership language was found. That is what the low band describes, which is why it scored Weak.

Evidence: inferred — our reading of indirect evidence, not a documented fact.

Stronger here: CROHOUSE scores Excellent on the same dimension.