Short answer
ChangeTower is an affordable website change monitor. It has a free plan, paid plans from $12/month, hourly checks from the Essential plan, and AI monitoring you set up in plain language. Tonic is built for agencies. It tracks each client's competitors every Monday and Thursday, explains and ranks every change, and turns it into a client report. Pick ChangeTower to watch many pages cheaply and often. Pick Tonic to report on competitors client by client.
Comparison table
| Feature | Tonic | ChangeTower |
|---|---|---|
| Per-client organization | Yes, on every plan | Multi-workspace setup per client on Enterprise; tags on all plans |
| Importance ranking | Yes, changes ranked by importance | Not verified |
| Before/after screenshots | Yes | Before and after of each change; snapshot stored on every check |
| Check frequency | Twice a week (Monday and Thursday) | Daily (Free, Lite); hourly (Essential, Business); custom (Enterprise) |
| Pages per competitor | Up to 3 key pages, found for you | Any URLs you add; 3 to 200 pages in total by plan, custom on Enterprise |
| Reports/PDF | Client-ready reports, share links and PDFs | Scheduled email reports (Business and up); PDF not verified |
| Team seats | 1 (Solo), 5 (Agency), 10 (Studio) | 1 (Lite) to 5 (Business) additional team members; custom on Enterprise |
| Starting price | $599/yr (Solo), billed yearly | Free; Lite $12/mo ($10/mo billed annually) |
Where ChangeTower is better
- Cost per page: 25 pages for $12/month on Lite, and up to 200 pages on Business.
- Frequency: hourly checks from Essential, and custom schedules.
- Fine control: watch or ignore sections and elements, and run user interactions before a check.
- Free plan: a free plan for 3 pages.
- Integrations: webhooks and MCP for AI assistants on Business.
Where Tonic fits better
- Per-client organization on every plan: with ChangeTower, separate workspaces per client are an Enterprise feature. Each client gets its own workspace, with its own competitors, changes and reports. That holds from the Solo plan up.
- No page lists to build: Tonic finds each competitor's pricing and offer pages.
- Explained, ranked changes: each change comes with a plain-words explanation and an importance ranking, so you can review quickly.
- Client reports: add approved changes to a client report and share it as a link or PDF.
Who should pick which
- You report to several clients and want per-client organization on an entry plan: Tonic
- You monitor many pages and want the lowest cost per page: ChangeTower
- You need hourly checks or custom schedules: ChangeTower
- You need webhooks or MCP for AI assistants: ChangeTower (Business)
- You want each change explained and ranked for a client report: Tonic
Pricing
- Tonic: Solo $599/yr, Agency $799/yr, Studio $1,999/yr, billed yearly.
- ChangeTower:
- Free: 3 pages, daily.
- Lite: $12/mo, or $10/mo annually. 25 pages, daily.
- Essential: $36/mo, or $29/mo annually. 100 pages, hourly.
- Business: $78/mo, or $62/mo annually. 200 pages, hourly, with Slack, webhooks and reports.
- Enterprise: custom.
- Source: changetower.com/pricing.