Simple, Transparent Pricing
Choose the Writing Workload That Fits You.
Every plan provides private, evidence-led AI-writing analysis. Choose Pro or Business when you want Humanizer access included.
Paid Plans for Every Writing Rhythm
Pay monthly or prepay annually and save 20%. Annual plans keep the same monthly word allowances while lowering the effective monthly price.
WritingSignal Plan
Starter
For students, occasional writers, and focused document checks.
Start with private, evidence-led detection and add Humanizer access only when you need it.
Monthly
$14.99/month
$143.88 billed annually
$11.99/month equivalent - Save $36
- Detector
- 25,000 detection words each month
- Humanizer
- Optional Humanizer add-on
- Private AI-assistance analysis with evidence and clearly stated uncertainty
- 25,000 detection words every month
- Pasted text, TXT, DOCX, and text-based PDF support
- Saved history and downloadable private text reports
- Add 10,000 Humanizer words for $9.99 monthly
Secure hosted checkout. WritingSignal does not store card or wallet credentials.
Annual Humanizer add-on: $95.88 ($7.99 monthly equivalent), saving $24.
Most Popular
Best ValuePro
For freelancers, copywriters, bloggers, and regular creators.
Get five times more detection capacity than Starter, with a generous Humanizer allowance already included.
Monthly
$34.99/month
$335.88 billed annually
$27.99/month equivalent - Save $84
5x Starter detection and 5x the Starter add-on Humanizer allowance
- Detector
- 125,000 detection words each month
- Humanizer
- 50,000 Humanizer words included
- Everything in Starter
- Five times the Starter detection allowance
- 50,000 Humanizer words included - no add-on required
- Audience, tone, and revision-strength controls
- Side-by-side revision review with meaning and fact-check warnings
- Up to 3,000 Humanizer words per request
Secure hosted checkout. WritingSignal does not store card or wallet credentials.
Designed for regular detection and revision work at the strongest per-word value.
WritingSignal Plan
Highest CapacityBusiness
For agencies, publishers, and high-volume content operations.
Give a growing operation substantially more room for recurring analysis and revision work.
Monthly
$89.99/month
$863.88 billed annually
$71.99/month equivalent - Save $216
- Detector
- 500,000 detection words each month
- Humanizer
- 200,000 Humanizer words included
- Everything in Pro
- 500,000 detection words every month
- 200,000 Humanizer words included
- Capacity for large, recurring content workflows
- Up to 3,000 Humanizer words per request
- Business-priority support when the support channel opens
Secure hosted checkout. WritingSignal does not store card or wallet credentials.
Team workspaces, public API access, and custom integrations will be priced when those services become available.
Optional Starter Upgrade
Add Humanizer Access to Starter.
An active Starter plan can add a separate monthly Humanizer allowance. Failed Humanization does not consume words, and the base detector allowance remains unchanged.
Starter Humanizer Add-On
10,000 Humanizer words each month
$9.99/month or $95.88/year (save $24)
Requires an active Starter plan.
Secure hosted checkout. WritingSignal does not store card or wallet credentials.