Simple, Honest Pricing
Credits never carry over between periods — but with Pro, you get 1,000 fresh credits every month.
Forever free, no card needed
- ✓150 credits / month
- ✓~5 AI requests per day
- ✓All 9 engineering tools
- ✓Last 10 history results
- ✗Unlimited monthly usage
University email required
- ✓500 credits / month
- ✓~16 AI requests per day
- ✓All 9 engineering tools
- ✓Last 10 history results
- ✓50% off vs Pro
For engineers who use it daily
- ✓1,000 credits / monthresets monthly
- ✓~50 Code Generator requests/month
- ✓All 9 engineering tools
- ✓Last 100 history results
- ✓Priority AI responses
Emergency Credits
Ran out mid-project? Buy a one-time top-up — credits never expire.
- ✓+100 credits instantly added
- ✓No subscription required
- ✓Stack as many times as you need
Credit Cost Per Tool
| Tool | Credits |
|---|---|
| 💻Code Generator | 20 |
| 🔧PLC Logic | 20 |
| 📄Datasheet AI | 10 |
| 📦BOM Generator | 10 |
| ⚡Fault Detector | 8 |
| 🔍Component Finder | 5 |
| 🐛Error Explainer | 2 |
| 🧮Calculators | FREE |
| 📐Unit Converter | FREE |
Free plan: 150 credits/month • Student: 500 credits/month • Pro: 1,000 credits/month (resets on the 1st)
7-Day Money-Back Guarantee
Not satisfied? If you've made fewer than 30 requests and it's within 7 days of subscribing, we'll refund you — no questions asked.
Email support@circuitsage.com or check your eligibility in your Dashboard.
FAQ
When do credits reset?
All plans reset on the 1st of each month. Free gets 150, Student gets 500, and Pro gets 1,000 fresh credits.
Do unused credits carry over?
No. Each period starts fresh. If you need more mid-period, buy Emergency credits — those never expire.
What counts as a 'university email'?
Any .edu or institutional academic email address. We verify at checkout.
Can I stack Emergency credits?
Yes — each purchase adds +100 on top. Emergency credits persist across plan changes and never expire.
What is your refund policy?
We offer a 7-day money-back guarantee on all paid plans. You must have made fewer than 30 requests. Check your eligibility instantly in your Dashboard, or email support@circuitsage.com.