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1. Listing metadata
Field-level data| Free Blocks | Candis | |
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| Free Blocks | Candis | |
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| Tagline | ||
| Description | ||
| Screenshots | images | — |
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Free Blocks is an application that helps you share your calendar on Slack. Free Blocks is compatible with your primary Google Calendar™ to determine when you're available, when your co-workers are available and create events to leverage discovered availability.
| Metric | Free Blocks | Candis |
|---|---|---|
| Free plan | ★ Yes | — |
| Pricing | Free | Included with service subscription |
On pricing, Free Blocks offers a free tier (Free) while Candis starts at Included with service subscription. For early-stage teams validating fit, the free-tier path lets you run the app on real workloads before committing budget.
Recommended evaluation path: install both apps' free tiers (where available) and run them in parallel on a small cohort for 7-14 days before committing. The data tables below show the per-feature breakdown — for most teams 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 Slack Marketplace 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: Free Blocks audit • Candis audit
Free Blocks is the cheaper option — it offers a free plan (Free). Candis starts at Included with service subscription. Both publish their pricing on the Slack Marketplace; AppRanks mirrors what's listed on each refresh cycle.
AppRanks cannot recommend one over the other from published marketplace data: the Slack Marketplace does not expose a rating or review base that separates them. Read both apps' detail pages for the feature breakdown, and compare against your own requirements rather than a headline number.
Both apps are one-click installs from the Slack Marketplace. AppRanks doesn't measure setup time directly, and the Slack Marketplace publishes no review base that would let us infer it for these two — read the recent reviews on each app's detail page for user-reported install experience.
Free Blocks typically suits early-stage and growth-mode teams based on its published review base (0 reviews). Candis typically suits early-stage and growth-mode teams based on its published review base (0 reviews). A larger review base generally means the app has been exercised at scale — relevant if you are processing high volume or handling enterprise compliance requirements.
Migration support varies by app and category. Free Blocks and Candis 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 Candis" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.