Comparison · 29 merchant reviews read · Updated October 2026
GemX vs syncX
Short answer
Pick GemX if you need template tests and url split tests and you want the most proven option (25 reviews).
Pick syncX if you need price tests and content tests and you want to start on a free plan.
 GemX |  syncX | |
|---|---|---|
| App Store rating | 4.8★ (25) | 5★ (6) |
| Cost at your traffic | $49+/moStarting price. The listing says price rises with revenue but gives no tiers. | Free to startCheapest plan: Free. |
| How price scales | Starts at $49/month for single-page testing, or from $99/month (up to $699) for full-funnel testing, with the Funnel plan price rising with your monthly store revenue. | Free to start, then $10.99 to $27.99/month depending on how many A/B tests and variants you need, not on your traffic or sales. |
| Launched | September 23, 2024 | October 3, 2023 |
| App Store listing | App Store listing |
syncX starts at $0 a month, GemX at $49
GemX
- Page Optimize$49/mo
- Funnel Optimize$99/mo
“Starts at $99 and goes up to $699. Pricing scales based on monthly sitewide revenue.”
syncX
- FreeFree
- Basic$10.99/mo
- Premium$17.99/mo
- Enterprise$27.99/mo
Only GemX can run template tests
Read from each app's listing. A dot means the listing says it can do it.
What reviewers complain about
Share of each app's reviews that complain about the topic. Apps under 20 reviews are left out because a single review swings the number.
| GemX | |
|---|---|
| Price | 0% |
| Billing and refunds | 0% |
| Support | 4.3% |
| Bugs | 4.3% |
| Setup | 0% |
| Dashboard | 0% |
| Reporting and stats | 4.3% |
| Flicker | 0% |
| Page speed | 0% |
| Integrations | 0% |
| What you can test | 0% |
| Results | 4.3% |
The most common GemX complaint: support
Tracking is inaccurate even after 24 hours. The app doesn't collect data on orders or visitors at all. I wasted two days testing only to see results that make no sense and don't match reality. Support doesn't exist. The support app itself doesn't even work. No way to get help, no responses, nothing. Stay away from this app.
GemX replies to 44% of reviews. syncX replies to none
Serious problems reviewers reported
Billing disputes, broken stores, misused data and missing features. Each one is a single merchant's account.
Tracking is inaccurate even after 24 hours. The app doesn't collect data on orders or visitors at all. I wasted two days testing only to see results that make no sense and don't match reality. Support doesn't exist. The support app itself doesn't even work. No way to get help, no responses, nothing. Stay away from this app.
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