Side-by-side comparison · 24 data points
Simple Invoice is a modern and minimalistic invoicing application that offers unique features.
| Simple Invoice ‑ Order Printer | Tax Rex ‑ Sales Tax Automation | |
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| Description | ||
| Screenshots | images | images |
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US State Sales Tax return Reports & Automated Filing for your store. Easy, Accurate & Time Saving!!!
| Metric | Simple Invoice ‑ Order Printer | Tax Rex ‑ Sales Tax Automation |
|---|---|---|
| Rating | 4.9 ★ | ★ 5.0 ★ |
| Total reviews | ★ 411 | 109 |
| Free plan | Yes | Yes |
| Pricing | Free to install | Free trial available |
| Built for Shopify | ★ Yes | — |
| Pricing tiers | 4 tiers | 4 tiers |
| Listed features | 5 | 5 |
| Featured placements | 2 | — |
| Languages | 15 supported | 1 supported |
| Listed since | Feb 2019 | Sep 2021 |
Simple Invoice ‑ Order Printer and Tax Rex ‑ Sales Tax Automation are evenly matched on rating (4.9★ vs 5.0★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow. Pricing entry tiers: Simple Invoice ‑ Order Printer at Free to install, Tax Rex ‑ Sales Tax Automation at Free trial available. Check each app's tier structure for the capacity limits you actually need before deciding — the headline number is the same shape, but the gating shape per tier (apps, orders, integrations) varies. Simple Invoice ‑ Order Printer has the larger user base (411 reviews vs 109), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Tax Rex ‑ Sales Tax Automation's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended evaluation path: install both apps' free tiers (where available) and run them in parallel on a small cohort of orders for 7-14 days before committing. The data tables below show the per-feature breakdown — for most merchants the deciding factor will be a single integration or workflow detail that's hard to compare from listing pages alone. This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical Shopify App Store listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Simple Invoice ‑ Order Printer audit • Tax Rex ‑ Sales Tax Automation audit
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| Keyword | Simple Invoice ‑ Order Printer | Tax Rex ‑ Sales Tax Automation |
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| registration | Not ranked | #10 |
| customer service automation | Not ranked | #18 |
| customer support automation | Not ranked | #21 |
| support | #114 | Not ranked |
Not featured in any section recently.
Both Simple Invoice ‑ Order Printer and Tax Rex ‑ Sales Tax Automation offer paid plans only. Simple Invoice ‑ Order Printer starts at Free to install; Tax Rex ‑ Sales Tax Automation starts at Free trial available. Compare the per-tier features in the Pricing section above before committing.
Simple Invoice ‑ Order Printer (4.9★, 411 reviews) and Tax Rex ‑ Sales Tax Automation (5.0★, 109 reviews) are essentially tied on rating. Look at review velocity and individual reviewer quotes — both visible on each app's detail page — to differentiate.
It depends on what you're optimizing for. Simple Invoice ‑ Order Printer fits better if you prioritize broader integrations; Tax Rex ‑ Sales Tax Automation is the call if you need the higher-rated option. Read both apps' detail pages on AppRanks for the full feature breakdown, install counts, and recent listing changes.
Both apps are one-click installs from the Shopify App Store marketplace. Simple Invoice ‑ Order Printer has more onboarding documentation maturity (411 reviews vs 109), which usually translates to better-tested setup wizards and quicker time-to-value. AppRanks doesn't measure setup time directly — read the recent reviews on each app's detail page for merchant-reported install experience.
Simple Invoice ‑ Order Printer typically suits early-stage and growth-mode stores based on its review-base composition (411 reviews). Tax Rex ‑ Sales Tax Automation aligns more with early-stage and growth-mode stores (109 reviews). Larger review bases generally mean the app has been load-tested at scale — relevant if you're processing high order volume or handling enterprise compliance requirements.
Migration support varies by app and category. Simple Invoice ‑ Order Printer and Tax Rex ‑ Sales Tax Automation both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from Tax Rex ‑ Sales Tax Automation" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
