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Knack alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Knack: no free plan, and builder and default designs feel dated. We ranked 5 alternatives by how directly each one replaces Knack, then by reviews, real visits and how recently each app's facts were checked against its own website. Tadabase currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Tadabase logoTadabaseFree plan + paidNoWeb4 of 466.5
2Airtable logoAirtableFree plan + paidNoWeb, Windows, macOS +24 of 457.2
3Softr logoSoftrFree plan + paidNoWeb4 of 450.3
  1. Tadabase logo

    1. TadabaseTop pick

    Best for: Small organisations building client portals or case-management apps without developers

    Free plan + paidWeb

    66.5

    score / 100

    Why switch from Knack

    Very similar database-plus-portal builder with an AI app generator and a free plan.

    Pros

    • AI generator produces a real app with database and roles, not a mockup
    • Account-level pricing rather than per-user fees
    • Logins, roles and record rules for external users

    Cons

    • Plans and docs are currently split between the old and new sites
    • Credit-based limits take some working out
    • Smaller community than Airtable or Softr
    Visit Tadabase Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Tadabase a good Knack alternative?

    Verified facts

    4 of 4 verified
    Free plan
    Yes, no card needed
    Checked Oct 25, 2026tadabase.com(opens source in a new tab)
    Starter plan
    $25/month ($21 billed yearly)
    Checked Oct 25, 2026tadabase.com(opens source in a new tab)
    Pro plan
    $50/month ($42 billed yearly)
    Checked Oct 25, 2026tadabase.com(opens source in a new tab)
    App users
    Unlimited, no per-person fee
    Checked Oct 25, 2026tadabase.com(opens source in a new tab)
  2. Airtable logo

    2. Airtable

    Best for: Non-technical teams that want a flexible shared database with a large template and integration ecosystem

    Free plan + paidWeb, Windows, macOS, iOS, Android

    57.2

    score / 100

    Why switch from Knack

    Better for internal collaboration on data, with interfaces for team members.

    Pros

    • Easy to learn for anyone comfortable with spreadsheets
    • Linked records, rollups and many views make real relational setups possible
    • Interfaces let you give colleagues tailored screens instead of raw tables
    • Large ecosystem of templates, integrations and community answers

    Cons

    • Per-seat pricing gets expensive as more people need edit access
    • Record and automation limits per base can force workarounds
    • No self-hosting option, so data lives only in Airtable's cloud
    Visit Airtable Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Airtable a good Knack alternative?

    Verified facts

    4 of 4 verified
    Free plan
    Yes
    Checked Oct 25, 2026airtable.com(opens source in a new tab)
    Team plan
    $20 per user/month billed annually
    Checked Oct 25, 2026airtable.com(opens source in a new tab)
    Business plan
    $45 per user/month billed annually
    Checked Oct 25, 2026airtable.com(opens source in a new tab)
    Billing basis
    Per seat
    Checked Oct 25, 2026airtable.com(opens source in a new tab)
  3. Softr logo

    3. Softr

    Best for: Small businesses building client portals or internal tools on Airtable or Sheets data

    Free plan + paidWeb

    50.3

    score / 100

    Why switch from Knack

    Builds modern-looking portals on top of Airtable or its own database.

    Pros

    • Quick to build portals with logins and permissions
    • Connects to many data sources, plus its own database
    • Free plan for small projects

    Cons

    • Block-based layouts limit custom design
    • App-user limits push you up the plans
    • Not suited to consumer apps at scale
    Visit Softr Details and reviews
    How this score is calculated
    Editorial fit ×0.346
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Softr a good Knack alternative?

    Verified facts

    4 of 4 verified
    Free plan
    Yes
    Checked Oct 25, 2026softr.io(opens source in a new tab)
    Starting price
    $19/month (Basic)
    Checked Oct 25, 2026softr.io(opens source in a new tab)
    Pro plan
    $99/month
    Checked Oct 25, 2026softr.io(opens source in a new tab)
    Business plan
    $329/month
    Checked Oct 25, 2026softr.io(opens source in a new tab)

The best Knack alternative for…

The highest-ranked app in this list for each need.

Tadabase logo

Best Knack alternative for most people

Tadabase

Very similar database-plus-portal builder with an AI app generator and a free plan.

Airtable logo

Best Knack alternative for a free plan you can upgrade

Airtable

Better for internal collaboration on data, with interfaces for team members.

Airtable logo

Best Knack alternative for Mac

Airtable

Better for internal collaboration on data, with interfaces for team members.

Airtable logo

Best Knack alternative for Windows

Airtable

Better for internal collaboration on data, with interfaces for team members.

Quickbase logo

Best Knack alternative for iPhone and Android

Quickbase

Scales to large enterprise operational apps with governance controls.

Caspio logo

Best Knack alternative for working in the browser

Caspio

Enterprise-grade version of the same idea, with HIPAA and other compliance options.

Knack alternatives: common questions

What is the best alternative to Knack?

Tadabase ranks first right now. Very similar database-plus-portal builder with an AI app generator and a free plan. Caspio and Airtable follow it in our ranking.

Is there a free alternative to Knack?

Yes. Tadabase (free plan + paid), Airtable (free plan + paid) and Softr (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Knack?

None of the 5 alternatives in this list is open source.

Why do people switch from Knack?

The complaints we hear most: no free plan; builder and default designs feel dated; custom styling needs CSS or JavaScript.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Knack, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.