Comparison · 29 merchant reviews read · Updated October 2026
Emerald Collective vs Theme Scientist
Short answer
Pick Emerald Collective if you need price tests and shipping tests and you want to start on a free plan.
Pick Theme Scientist if you need theme tests and content tests.
 Emerald Collective |  Theme Scientist | |
|---|---|---|
| App Store rating | 2.9★ (17) | 4★ (13) |
| Cost at your traffic | FreeCheapest plan: Free Plan. | $29.99+/moYour traffic is above the listed limits. Tester Pro is the floor, expect a custom quote. |
| How price scales | Free for up to 10 orders, or a flat $10/month for unlimited orders and 24/7 support. | Starts at $9.99/month with a 14-day free trial, and the price goes up as your store's monthly order limit increases (50, 250, or 500 orders). |
| Launched | December 3, 2024 | March 5, 2020 |
| App Store listing | App Store listing |
Emerald Collective starts at $0 a month, Theme Scientist at $9.99
Emerald Collective
- Free PlanFree
- Premium Plan$10/mo
Theme Scientist
- Tester$9.99/mo
- Tester+$19.99/mo
- Tester Pro$29.99/mo
Only Emerald Collective can run price tests
Read from each app's listing. A dot means the listing says it can do it.
| Emerald Collective | Theme Scientist | |
|---|---|---|
| Price tests | ● | ○ |
| Theme tests | ○ | ● |
| Content tests | ○ | ● |
| Shipping tests | ● | ○ |
| Audience targeting | ● | ○ |
| Free plan | ● | ○ |
What reviewers complain about
None of these apps has 20+ reviews yet, so there's not enough to compare complaint rates.
Theme Scientist replies to 85% of reviews, Emerald Collective to 25%
| Emerald Collective | Theme Scientist | |
|---|---|---|
| Reviews with a developer reply | 25% | 85% |
| Praise support | 31.3% | 69.2% |
| Complain about support | 25% | 7.7% |
Serious problems reviewers reported
Billing disputes, broken stores, misused data and missing features. Each one is a single merchant's account.
purtroppo non funziona. Dopo alcune ore non ha ancora generato impression nessuna delle due varianti. Ho aperto varie chat di assistenza in cui dicono di rispondere in 16 minuti ma dopo 24 ancora non hanno risposto. Intanto l'ABtest continua a non funzionare. Disinstallo tutto
The app not working, i just wanted to do an A/B test for shipping rate. The exchanges with support lasted four days. First, they asked me for an authentication code to access my store (which was strange), then they told me it was fixed but it still didn't work, and then they asked me to call them to fix it live, even though it had already been done normally. In conclusion, four days wasted for…
Very bad, I insist for a long time, has experienced constant error, delay, unable to create the test, can't choose the product after test finally launched the first product price, but it's very wonderful is a few hours later I products in the price of shopify concrete was somehow changed, changed to test the price of group B, ridiculous! Customer support is slow to respond, I can never reach…
Doesn't work very well, when you've created a price testing sometimes the test just disappears, you cant edit it either.
Results merchants put a number on
- over $50k a year revenue with Theme Scientist, testing multiple growth ideas. “increase our revenue by over $50k a year”
- double conversion rate with Theme Scientist. “double, yes double our conversion rates in 3 months”
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