# Appen vs FaceSearch

Appen records 665,840 monthly visits with +0.2% month-over-month growth and Contact for Pricing pricing. FaceSearch records 167,598 monthly visits with +66.6% growth and Freemium pricing.

| Metric | [Appen](https://openaitools.app/tool/appen-com) | [FaceSearch](https://openaitools.app/tool/facesearch-ai) |
| :--- | :--- | :--- |
| Website URL | https://appen.com | https://facesearch.net |
| Categories | AI Models, Large Language Models (LLMs), AI Developer Tools | AI Face Recognition, AI Search Engine, AI API |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 665,840 | 167,598 |
| MoM Growth Rate | +0.2% | +66.6% |
| Primary Market | United States | United States |
| Direct Visits | 238,314 | 43,240 |
| Review Score | 4.4 | 3.7 |
| Saved Count | 2 | 0 |
| Supported Platforms | Website | Website |

## Appen

Appen is one of the oldest pure-play AI data companies, tracing its roots to 1996 when it began building human-labeled datasets for speech recognition and NLP. Over three decades it supported successive generations of model development — search relevance in the 2000s, machine translation, deep-learning vision annotation, Transformer-era semantics, GPT-3 scale corpora, RLHF for conversational AI, and now agentic and multimodal foundation models.

Today Appen positions itself around six specialised capability areas: Frontier Alignment (chain-of-thought reasoning traces, SME RLHF, supervised fine-tuning demonstrations, adversarial red teaming), Agentic AI (golden trajectories, RL environment design, failure-mode taxonomies, SWE-driven evaluation), Multimodal and Speech AI (multilingual ASR and conversational corpora, expressive TTS annotation, VLM training data, video action labelling), Physical AI (LiDAR point-cloud annotation, multi-camera sensor fusion, robotics demonstration trajectories, world-model rollouts), Model Integrity (hallucination benchmarking, bias detection, regulatory audits and continuous monitoring), and Research Services (context engineering, calibrated LLM-as-a-judge, synthetic data and custom benchmarking).

Delivery runs through Appen's AI Data Platform (ADAP), which blends automation with human oversight, and the company cites SOC 2 and ISO 27001 certification, 500+ global locales, and a client roster that includes major cloud, search, retail and aerospace organisations. Appen does not publish self-serve pricing; engagements start with a scoping conversation and are quoted per project, so cost depends on data volume, language coverage, modality and annotation complexity.

**Pricing & Plans:** Enterprise/contact-for-pricing. Appen does not publish self-serve plans; projects are scoped and quoted individually. Appen also sells off-the-shelf (OTS) datasets and crowd/contractor workforce programs with separate terms.

- **Frontier alignment data:** Chain-of-thought reasoning traces, SME-level RLHF, supervised fine-tuning demonstrations and adversarial red teaming for the most capable models.
- **Agentic AI datasets:** Golden trajectories, RL environment design, failure-mode taxonomies and software-engineering-driven deep evaluation for autonomous agents.
- **Multimodal and speech corpora:** Multilingual ASR and conversational speech data, expressive TTS annotation, vision-language model training data, video action labelling and voice-agent evaluation.
- **Physical AI annotation:** LiDAR point-cloud labeling, multi-camera sensor fusion, robot demonstration trajectories, world-model rollouts and embodied interaction logs.
- **Model integrity and evaluation:** Hallucination benchmarking, bias detection, regulatory audits and continuous monitoring, plus independent model evaluation.
- **AI Data Platform (ADAP):** A production platform that combines automation with human oversight, with SOC 2 and ISO 27001 certification and 500+ locales covered.

**Strengths:** Three decades of annotation methodology, tooling and workforce management experience; Very broad coverage: frontier alignment, agentic, speech, multimodal, physical AI and evaluation in one vendor; 500+ locales and multilingual expertise that most in-house teams cannot match; Enterprise-grade security posture (SOC 2, ISO 27001) and publicly listed governance

**Limitations:** No transparent self-serve pricing; every engagement requires a sales/scoping cycle; Enterprise-oriented contracts can be heavy for small teams or indie developers; Quality depends on workforce management, so results vary by project and locale; Overlaps with many cheaper specialist annotation vendors, making vendor selection non-trivial

[Profile (Markdown)](https://openaitools.app/tool/appen-com.md)

## FaceSearch

FaceSearch is a specialized reverse search product built around faces rather than scenery or objects. Instead of typing a query, you upload a single photo; the system validates that a usable face is present, then scans indexed public imagery from social networks, dating platforms and websites and returns candidate matches with source links and confidence scores. The service markets itself for practical everyday problems: checking whether a dating profile is real, spotting a catfish or romance scam, verifying a candidate or contractor, and finding out whether your own pictures are being reused without permission.

Privacy and legality get explicit treatment throughout the product. Uploads are encrypted in transit and, per the vendor, deleted within 24 hours, with no permanent storage of biometric data. Users must confirm they have the right to search a given image, and stalking or harassment is prohibited. Each search costs three credits, and credits are only consumed when a search completes, so a technical failure gets refunded, though a search that genuinely returns nothing still uses credits.

Pricing follows a credit model with a free entry point. A PRO subscription is listed at $29 per month including 60 credits and features such as search history and PDF export, while pay-as-you-go credit packs range from a small starter pack up to enterprise volumes at progressively lower per-credit rates. Payment options cover major cards, wallets such as Apple Pay and Google Pay, PayPal, regional methods including Alipay and WeChat Pay, and cryptocurrency. The product also offers dedicated search modes per social network and companion apps for iOS and Android.

**Pricing & Plans:** Freemium with a free starting tier, a PRO subscription listed at $29/month for 60 credits plus history and PDF export, and pay-as-you-go credit packs from about $6 for 3 credits up to $599 for 1,000 credits.

- **Reverse image face search:** Search across social profiles, dating sites and general web pages to locate where a given face has appeared publicly.
- **Smart face pre-validation:** Uploaded images are screened before a search runs, so low-quality or faceless photos don't burn your search credits.
- **Exportable PDF reports:** Turn a completed search into a professional report with matches, confidence scores and source links for documentation or legal use.
- **Search history for subscribers:** PRO users can revisit and re-download past search results, keeping a record of everything they have checked.
- **Mobile apps and social-specific searches:** Apps for iOS and Android plus dedicated modes for Instagram, TikTok, Facebook, X, Snapchat, YouTube and LinkedIn.

**Strengths:** Purpose-built for faces rather than generic image matching, with confidence scores and source links for each match; Clear privacy stance: encrypted uploads deleted within 24 hours and no permanent biometric storage; Flexible payment coverage including cards, wallets, PayPal, regional methods and cryptocurrency

**Limitations:** Searches that return no results still consume credits, so unsuccessful checks cost money; Credits are generally non-refundable once purchased, aside from technical failures; Face search raises ethical and legal sensitivities that vary by jurisdiction and must be respected

[Profile (Markdown)](https://openaitools.app/tool/facesearch-ai.md)

## Frequently Asked Questions

### How do Appen and FaceSearch compare in monthly traffic?

Appen has 665,840 monthly visits, while FaceSearch has 167,598. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Appen has a month-over-month growth rate of +0.2%; FaceSearch has +66.6%.

### How does pricing compare?

Appen: Contact for Pricing. Enterprise/contact-for-pricing. Appen does not publish self-serve plans; projects are scoped and quoted individually. Appen also sells off-the-shelf (OTS) datasets and crowd/contractor workforce programs with separate terms. FaceSearch: Freemium. Freemium with a free starting tier, a PRO subscription listed at $29/month for 60 credits plus history and PDF export, and pay-as-you-go credit packs from about $6 for 3 credits up to $599 for 1,000 credits.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Prolific](https://openaitools.app/tool/prolific-com) | 18,697,671 | -1.8% | Paid | Connects teams directly with verified human participants for preference tuning and studies, but lacks managed end-to-end labeling pipelines. | [.md](https://openaitools.app/tool/prolific-com.md) |
| 2 | [Lenso.ai](https://openaitools.app/tool/lenso-ai) | 1,588,648 | -1.3% | Freemium | Offers broader reverse image and face matching capabilities across the web, but focuses more heavily on general visual search. | [.md](https://openaitools.app/tool/lenso-ai.md) |
| 3 | [Invisible Technologies](https://openaitools.app/tool/invisible-technologies-inc) | 1,364,520 | +64.4% | Contact for Pricing | Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service. | [.md](https://openaitools.app/tool/invisible-technologies-inc.md) |
| 4 | [Labelbox](https://openaitools.app/tool/labelbox) | 762,803 | -22.8% | Contact for Pricing | Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces. | [.md](https://openaitools.app/tool/labelbox.md) |
| 5 | [Scale](https://openaitools.app/tool/scale) | 616,915 | +12.5% | Contact for Pricing | Provides enterprise-grade AI training data and model evaluation at massive scale, but often with higher enterprise pricing. | [.md](https://openaitools.app/tool/scale.md) |
| 6 | [SuperAnnotate](https://openaitools.app/tool/super-annotate) | 386,034 | +37.4% | Free Trial, Contact for Pricing | Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks. | [.md](https://openaitools.app/tool/super-annotate.md) |
| 7 | [FaceSeek](https://openaitools.app/tool/faceseek-ai-face-search) | 350,166 | -11.9% | Freemium | Provides a similar direct reverse face lookup utility, though index coverage and result accuracy may vary. | [.md](https://openaitools.app/tool/faceseek-ai-face-search.md) |
| 8 | [SocialFinder.ai](https://openaitools.app/tool/socialfinder-ai) | 250,665 | +47.7% | Paid | Specializes more strictly in tracking down public social media profiles from photos, with a clean user interface. | [.md](https://openaitools.app/tool/socialfinder-ai.md) |
| 9 | [Arize AI](https://openaitools.app/tool/arize-com) | 249,028 | +3.2% | Paid, Contact for Pricing | Agent observability, evaluation, and continuous improvement for production AI | [.md](https://openaitools.app/tool/arize-com.md) |
| 10 | [Encord](https://openaitools.app/tool/encord-com) | 244,204 | +9.4% | Contact for Pricing | The multimodal data layer for computer vision and physical AI teams | [.md](https://openaitools.app/tool/encord-com.md) |

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Source: https://openaitools.app/compare/appen-com-vs-facesearch-ai

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)