SignalStack uses usage-based pricing — start free, then pay per signal or via a monthly bundle:
| Plan | Price | Signals |
|---|---|---|
| Free | $0 | First 25 |
| Pay-per-signal | $0.59–$1.49 ea | As you go |
| Basic | $27/mo | 50 |
| Premium / Pro | $97 / $250/mo | 250 / 1,000 |
SignalStack vs TradersPost. Both turn webhook alerts into live broker orders without code. SignalStack uses a pay-per-signal model (great for low/medium frequency) and benefits from the TrendSpider ecosystem. TradersPost leans on flat monthly subscriptions, which can be cheaper for high-frequency automation and adds portfolio-style features. Choose SignalStack if you trade alerts occasionally; consider TradersPost if you fire many signals per day.
SignalStack is one of the simplest ways to automate alert-driven trading without code or a VPS: paste a webhook, connect a broker, and orders fire in under half a second across 30+ platforms. It is backed by the TrendSpider team and starts free. The main consideration is cost structure — pay-per-signal is cheap for occasional trades but can add up for high-frequency strategies, so model your usage. For most discretionary and swing automation, it is well worth it.