# SimFin vs StealthWriter

SimFin records 15,391 monthly visits with -27.5% month-over-month growth and Freemium pricing. StealthWriter records 2,887,114 monthly visits with +15.5% growth and Freemium pricing.

| Metric | [SimFin](https://openaitools.app/tool/simfin) | [StealthWriter](https://openaitools.app/tool/stealthwriter) |
| :--- | :--- | :--- |
| Website URL | https://simfin.com | https://stealthwriter.ai |
| Categories | AI For Finance, AI For Data Analytics, AI Investing, AI API | Humanizer AI, AI Bypasser, AI Rewriter, AI Content Detector |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 15,391 | 2,887,114 |
| MoM Growth Rate | -27.5% | +15.5% |
| Primary Market | United States | United States |
| Direct Visits | 6,249 | 1,616,124 |
| Review Score | 4.4 | 3.7 |
| Saved Count | 1 | 16 |
| Supported Platforms | Website | Website |

## SimFin

SimFin positions itself as a data-first alternative to traditional stock research portals. Instead of opinion-driven ratings, it gives you 80+ screening indicators, custom filter logic and 20+ years of chart and fundamental history across roughly 5,000 listed companies. Findings can be saved as studies and strategies, shared with other members, or exported for further work.

The backtesting layer lets you test single names or multi-condition portfolio rules against decades of history, with adjustable rebalancing intervals and benchmark comparisons. A high-speed credit system meters intensive screening and backtest runs, with monthly budgets that scale by plan.

For programmatic users, SimFin exposes the same dataset through a Python API, an Excel plugin, a JSON web API and bulk CSV downloads. Data is aggregated in-house from company filings and passed through a QA step before publication, so each figure can be traced back to the source statement.

**Pricing & Plans:** Freemium with four tiers. FREE costs $0 and includes the screener, 5 years of history and light API access. START is about $15/month, BASIC about $35/month and PRO about $71/month when billed annually, unlocking longer history, more high-speed credits and higher call-rate limits. A 50% student discount applies to BASIC, and Enterprise pricing is quoted on request.

- **Fundamental stock screener:** Filter thousands of stocks with 80+ built-in indicators and unlimited custom conditions, then visualize the matches as line charts, scatter plots or distribution plots.
- **Strategy backtesting:** Test single stocks or weighted multi-criteria portfolios over 20+ years of history, with weekly to yearly rebalancing and sector benchmark comparisons.
- **Data API and bulk export:** Pull the same dataset through a Python package, Excel plugin, JSON web API or CSV bulk download, with tiered call-rate limits from 2 to 20 requests per second.
- **High-speed credit system:** Monthly credit budgets from 500 to 30,000 let heavy users run intensive screens and backtests without throttling the interactive app.
- **Shareable studies and portfolios:** Save private portfolios, publish studies and strategies, and let other members copy, comment on and rate your setups.

**Strengths:** Transparent, traceable fundamental data built in-house rather than scraped from third parties; Free tier is genuinely usable for screening and light API work; Comparatively low subscription cost versus institutional data terminals; Strong developer ergonomics through Python, Excel and JSON endpoints

**Limitations:** European market coverage historically lags US coverage; Heavy backtesting and high-speed screening are metered by credits; Interface density is high and can overwhelm beginners; No broker execution or live-trading features

[Profile (Markdown)](https://openaitools.app/tool/simfin.md)

## StealthWriter

StealthWriter is built around two steps: scan and rewrite. The detector highlights sentences that still read as AI-written, and the humanizer then rewrites the text to smooth those passages out. Because you can run the detector again afterwards, it works as an iterative loop rather than a one-shot button, which makes it more practical for longer articles where only a few paragraphs sound robotic.

The tool targets people who draft with large language models but publish under their own name: bloggers, marketers, copywriters and researchers. Output can be tuned by rewriting level and, at the sentence level, by picking from alternative phrasings. Processing is quick — typically a matter of seconds — and the free tier with 10 daily humanizations and 1,000 words per input is enough to test whether the tone matches your writing style. Paid plans raise both the daily allowance and the maximum input length, which matters if you humanize long-form content regularly.

StealthWriter is a service of AiVantage LLC. On privacy, the company states that text submitted for humanizing or scanning is not stored after processing, not shared with third parties and not used for training. It is best treated as a drafting and polishing assistant: it improves how naturally AI-assisted text reads, but you should still review facts, claims and citations yourself before publishing.

**Pricing & Plans:** Freemium. The free plan costs $0 and includes 10 humanizations and 10 AI scans per day with up to 1,000 words per input. Paid tiers are Starter at $20/month (50/day), Plus at $50/month (150/day), Pro at $100/month (350/day) and Scale at $400/month (2,000/day), each allowing 5,000 words per input, with discounts for annual billing.

- **AI text humanizer:** Rewrites AI-generated drafts with natural phrasing, rhythm and flow, and lets you pick light, medium or aggressive rewriting depending on how much change you want.
- **Built-in AI detector:** Scan text before and after humanizing to see which sentences still look machine-written, with colour-coded sentence-by-sentence highlights.
- **Alternative rewrites per sentence:** Click any sentence to see alternative rewrite options and fine-tune the output until it matches your own voice.
- **Fast batch processing:** Returns humanized text in seconds, with word limits per input ranging from 1,000 words on the free plan up to 5,000 words on paid tiers.
- **Volume-friendly quotas:** Daily allowances scale with your plan, from 10 humanizations a day on the free tier up to 2,000 a day on the Scale plan, for high-volume content workflows.

**Strengths:** Free plan lets you test the humanizer and detector at no cost; Detector and humanizer in one workflow makes quality checking easy; Sentence-level alternative rewrites give fine control over tone; Three rewrite strengths suit different content types

**Limitations:** Monthly quotas are metered per day, so bursty heavy users may hit limits; Humanised text still needs a human read-through for factual accuracy; Result quality varies by language and by how obviously AI-written the source is; No built-in grammar or plagiarism checker beyond the AI detector

[Profile (Markdown)](https://openaitools.app/tool/stealthwriter.md)

## Frequently Asked Questions

### How do SimFin and StealthWriter compare in monthly traffic?

SimFin has 15,391 monthly visits, while StealthWriter has 2,887,114. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

SimFin has a month-over-month growth rate of -27.5%; StealthWriter has +15.5%.

### How does pricing compare?

SimFin: Freemium. Freemium with four tiers. FREE costs $0 and includes the screener, 5 years of history and light API access. START is about $15/month, BASIC about $35/month and PRO about $71/month when billed annually, unlocking longer history, more high-speed credits and higher call-rate limits. A 50% student discount applies to BASIC, and Enterprise pricing is quoted on request. StealthWriter: Freemium. Freemium. The free plan costs $0 and includes 10 humanizations and 10 AI scans per day with up to 1,000 words per input. Paid tiers are Starter at $20/month (50/day), Plus at $50/month (150/day), Pro at $100/month (350/day) and Scale at $400/month (2,000/day), each allowing 5,000 words per input, with discounts for annual billing.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [DeepL](https://openaitools.app/tool/deepl) | 95,110,871 | -1.7% | Freemium | Enterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages. | [.md](https://openaitools.app/tool/deepl.md) |
| 2 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides. | [.md](https://openaitools.app/tool/grammarly.md) |
| 3 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Offers versatile paraphrasing and vocabulary adjustment for academic writing, but is not specifically optimized to bypass AI detectors. | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 4 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | Focuses heavily on high-accuracy AI detection while including a humanizer tool, prioritizing detection testing over rewriting. | [.md](https://openaitools.app/tool/zerogpt.md) |
| 5 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | Industry-standard AI detection platform relied on by educators, though its text humanization features are secondary. | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 6 | [HumanizeAI.pro](https://openaitools.app/tool/humanizeai-pro) | 9,652,312 | +26% | Free | Delivers quick, conversational text rewriting to bypass AI detection, but lacks dedicated built-in detector testing suites. | [.md](https://openaitools.app/tool/humanizeai-pro.md) |
| 7 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Provides robust multi-detector testing alongside humanization, but often operates on stricter usage limits than StealthWriter. | [.md](https://openaitools.app/tool/undetectable-ai.md) |
| 8 | [AI Humanize](https://openaitools.app/tool/ai-humanize) | 2,152,089 | +8.1% | Freemium, Paid | Converts machine-written prose into natural-sounding text efficiently, though with fewer customization options for writing style. | [.md](https://openaitools.app/tool/ai-humanize.md) |
| 9 | [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | +2.8% | Paid | Rigorous content integrity and AI detection checker designed for publishers, but lacks direct text humanization tools. | [.md](https://openaitools.app/tool/originality.md) |
| 10 | [Phrasly](https://openaitools.app/tool/phrasly-ai) | 1,209,985 | +17.9% | Freemium, Subscription | Combines AI humanization with integrated writing tools, offering smoother collaborative editing than StealthWriter's simpler interface. | [.md](https://openaitools.app/tool/phrasly-ai.md) |

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Source: https://openaitools.app/compare/simfin-vs-stealthwriter

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