Appen records 665,840 monthly visits with +0.2% month-over-month growth and Contact for Pricing pricing. forms.app records 987,157 monthly visits with -11.2% growth and Freemium, Paid pricing.
Human-validated training data and evaluation services for frontier AI models
Build forms, surveys and quizzes in seconds — with unlimited free responses
| Dimension / Metric | | |
|---|---|---|
| Official Domain | appen.com | forms.app |
| Pricing Model | Contact for Pricing | Freemium, Paid |
| Monthly Visits | 665.84K (665,840) | 987.16K (987,157) |
| MoM Traffic Delta | +1.1K (+0.2%) | -124.04K (-11.2%) |
| Primary Market & Share | 🇺🇸 United States (22%) | 🇧🇷 Brazil (26.1%) |
| Direct Visits / mo | 238.31K | 595.53K |
| User Rating | 4.4 | 4.2 |
| Supported Platforms | Website | Website |
Human-validated training data and evaluation services for frontier AI models
Chain-of-thought reasoning traces, SME-level RLHF, supervised fine-tuning demonstrations and adversarial red teaming for the most capable models.
Golden trajectories, RL environment design, failure-mode taxonomies and software-engineering-driven deep evaluation for autonomous agents.
Multilingual ASR and conversational speech data, expressive TTS annotation, vision-language model training data, video action labelling and voice-agent evaluation.
LiDAR point-cloud labeling, multi-camera sensor fusion, robot demonstration trajectories, world-model rollouts and embodied interaction logs.
Build forms, surveys and quizzes in seconds — with unlimited free responses
Assemble forms, surveys, quizzes and polls visually, then brand them with custom themes and your own domain.
Describe what you need and the AI drafts the full form; it can also rephrase questions and generate multiple-choice answer options.
Automate the path from submission to spreadsheet, CRM or internal system without manual copying.
Start from reviewed templates for applications, bookings, feedback, HR, events and interactive quizzes.
SpecialistConnects teams directly with verified human participants for preference tuning and studies, but lacks managed end-to-end labeling pipelines.
SpecialistConnects teams directly with verified human participants for preference tuning and studies, but lacks managed end-to-end labeling pipelines.
Offers advanced no-code form customization and robust database integrations, but with slightly less automated AI generation.
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.
Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces.
Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces.
Provides enterprise-grade AI training data and model evaluation at massive scale, but often with higher enterprise pricing.
Provides enterprise-grade AI training data and model evaluation at massive scale, but often with higher enterprise pricing.
Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.
Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.
SpecialistFocuses heavily on end-to-end encryption and privacy, trading some ease of design for high-security data collection.
SpecialistFocuses heavily on end-to-end encryption and privacy, trading some ease of design for high-security data collection.
SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistThe multimodal data layer for computer vision and physical AI teams
SpecialistThe multimodal data layer for computer vision and physical AI teams
Provides seamless AI-native form generation from text prompts, matching forms.app's speed with cleaner modern layouts.
Offers pre-packaged AI training datasets and custom data collection services, but with a smaller global crowd than Appen.
Offers pre-packaged AI training datasets and custom data collection services, but with a smaller global crowd than Appen.
Free / Open-sourceProvides a flexible open-source annotation platform for self-hosting, but lacks Appen's managed enterprise human workforce services.
Free / Open-sourceProvides a flexible open-source annotation platform for self-hosting, but lacks Appen's managed enterprise human workforce services.
