The era of overpaying for e-signatures is over.
Unlimited members · Zero extra fees
Same features. Radically different price.
Audit logs, evidence management, team permissions, templates, 4 languages — full enterprise-grade features powered by AI-driven development at a fraction of the cost.
Unlimited team members
Add as many members as you want. No per-seat charges ever.
Enterprise-grade security
TLS 1.3 / AES-256 encryption. Legally compliant. Zero AI Training.
4 languages supported
Email notifications and signing screens in 4 languages for seamless global contracts.
Signing Complete
Just now · All 2 signers completed
Monthly Cost
$4.68
/ mo
Why 1/100 is possible
AI development changed our cost structure.
We redefined pricing through technology.
AI-powered development compresses development and maintenance costs to the limit. What we cut is not quality, but outdated, wasteful costs.
AI-Driven Development
AI-powered development and operations compress development costs to a fraction of traditional approaches.
Zero Sales Team Model
Growth driven purely by product quality. Sales costs are structurally eliminated.
No Per-Seat Charges
Unlimited team members on all plans. Break free from the traditional per-user pricing model.
All Savings Passed to You
What we cut is not quality, but outdated waste. All cost savings are passed on as lower prices.
Security and legal validity
without compromise.
Hundredth Sign adopts industry-standard security technologies at an affordable price.
TLS 1.3 / AES-256 Encryption
Industry-leading encryption for data in transit and at rest
Japan E-Bookkeeping Act Compliant
Tamper prevention, timestamps, and audit logs built in
Japan E-Signature Act Compliant
Designed to meet the requirements of Japan's Electronic Signature Act
Auto Certificate of Completion
Automatically generates certificates recording signer, time, and IP
Features
Every feature,free from day one.
Hundredth Sign includes only the features freelancers and SMBs truly need.
Document Creation & Upload
Upload PDFs and freely place signature and text fields. Save as templates for repeated use.
Send Signing Requests
Just enter an email to send a signing request. Recipients don't need an account.
E-Signatures & E-Stamps
Sign via typing, drawing, or image upload. Auto-generate Japanese-style round and square stamps.
Auto Stamp Generation
Enter a name to auto-generate round and square stamps for Japanese business customs.
Team & Contact Management
Unlimited team members on all plans. Centrally manage contacts and select recipients with one click.
E-Bookkeeping & Tamper Prevention
PDF tamper prevention (flattening), timestamps, and audit logs for compliance. Auto-generated certificates.
4 Languages
UI and email notifications in 4 languages. Send signing requests to overseas partners in their native language.
Audit Log & Certificates
Record who signed, when, and from where. Auto-generate legally valid certificates of completion.
Same 1,000 envelopes. Radically different cost.
Enterprise-grade features at a fraction of the price. The difference in cost structure makes this possible.
| Feature | Enterprise providers DocuSign, Adobe Sign etc. | Budget competitors HelloSign, PandaDoc etc. | Recommended Hundredth Sign |
|---|---|---|---|
Monthly cost for 1,000 envelopes | $500+ / mo | $60+ / mo | $4.35 / mo |
Per-seat charges | $15+ / user / mo | User limits apply | Free & unlimited |
Full feature access | Premium plans only | Key features limited | All features unlocked |
Audit logs & certificates | External certified TS | Basic logs only | IP & hash certificates |
Zero AI Training | May use for training | Undisclosed | Fully guaranteed |
Multilingual support | 14 languages | Limited languages | 4 languages |
* Enterprise pricing is estimated based on publicly available information. Actual prices may vary by contract terms.
Pricing
Simple, transparent pricing
All features included in every plan. The only difference is monthly sends.
Up to 5 sends/month · Free forever
- Monthly contract sends: 5
- Unlimited Team Members
- All other features: included
Choose a plan
Choose your monthly send volume in steps of 1,000. Pricing is based only on sends — no per-seat fees or feature limits.
Monthly contract sends
✓ Upgrade or add volume anytime
* All prices exclude tax. Subscriptions can be cancelled anytime.
* Prices shown are approximate. The final amount may vary slightly at checkout due to exchange rates.
Security & Compliance
Low price doesn't mean low security
Hundredth Sign achieves low prices through a PLG model that eliminates sales costs. Security and legal compliance remain at the highest industry standards.
TLS 1.3 / AES-256 Encryption
Highest-grade encryption for both data in transit and at rest. Prevents interception and tampering.
Zero AI Training
Your contract data is never used for AI training. Data ownership always belongs to you.
Audit Logs & Certificates
Records timestamps and IP addresses for all operations. Auto-generates completion certificates.
PDF Tamper Prevention
Signed PDFs are flattened to prevent tampering. Technical guarantee of document authenticity.
E-Signature & E-Bookkeeping Act
Compliant with Japan's Electronic Signature Act and Electronic Bookkeeping Act for legally valid signatures.
International Transactions
With email notifications and signing screens in 4 languages, cross-border contracts are smooth and easy.
We cut unnecessary costs, not quality. Security is the one area where we never compromise.
FAQ
Frequently Asked Questions
Hundredth Sign is designed to meet the requirements of Japan's Electronic Signature Act (witness-type) and Electronic Bookkeeping Act. All signatures include auto-generated certificates recording signer, time, and IP address. Please note that the final determination of legal validity depends on individual contract details and circumstances, so consult a legal professional if needed.
