99tests vs Woodstitch

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

99tests compared with Woodstitch
Detail	99tests	Woodstitch
What it does	Real testers run your AI-generated test cases on real phones and browsers with a human-verified pass/fail report in 3 days	Human evaluation for text-to-speech with blinded listening studies
Stage	Established	Not given
Founded	2011	Not given
Based in	IN	US
Pricing model	Paid	Paid
Pricing	Starter ₹9,999 + GST (5 sessions × 45 min, 2 devices/browsers, up to ~25 test cases, 3 business days); Standard ₹18,999 + GST (10 sessions × 45 min, 4 devices/browsers, up to ~50 test cases, 3 business days); Deep ₹34,999 + GST (20 sessions × 90 min, 6 devices/browsers, up to ~120 test cases, 5 busi	$18.00 per hour of audio heard by listeners; $0.30 per judgement on a pair of two 30-second clips; $300.00 for 200 pairs × 5 ratings with 30-second clips (1,000 judgements)
Key features	Test case execution on real Android and iOS phones Cross-browser testing on Chrome, Safari, Edge and Firefox Human-verified pass/fail results for every test case Screenshot and video recording of every failure Exact reproduction steps for every failure Device, OS and browser version details in report Verified severity grading against published rubric Duplicate finding merging and verification One-click re-run on same plan with new build Coverage table showing pass/fail/blocked status per device	Blinded paired-preference studies with no system names visible API for creating studies and retrieving results Exact price quote before study starts Per-judgement data export as CSV Paid US-based listener panel Attention signals recorded with every judgement Live results streaming as listeners answer Detection template for AI vs human narration Published methodology and platform transparency
What makes it different	Real devices only, not emulators or simulators Human verification catches failures emulators and AI agent test runs miss Fixed price with no hourly overage or hidden charges Unfilled device sessions automatically credited to next job	Publishes its own listening studies on the same platform with the same methodology as customer studies Forced-choice preference testing answers which system people prefer, not rating scales Fast turnaround with live result streaming and no minimum study size Transparent pricing with no setup fees or minimums, quoted before starting Customer audio stored securely and used only for that study
Community votes	0	0
DR (Domain Rating by Ahrefs)	30 +2 (up) since last check	8 no change since last check
Trust Flow (Majestic)	9	9
Citation Flow (Majestic)	32	24
Referring domains (Majestic)	109	69

6 details filled in for both companies.

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