Knack Alternatives: What to Use When Your Spreadsheet Isn't a Database
Knack turns spreadsheets into online databases — which is perfect if your spreadsheet actually is a database, and frustrating if it isn't. Here's an honest breakdown of where it fits, where it doesn't, and what to use instead.
What Knack Does Well
Knack is a no-code online database platform: import your spreadsheet data, define relationships between tables, and build forms, searchable views, and user portals on top. Paid plans start around $49/month (with intro pricing below that), scaling to roughly $110/month for Pro and $250/month for Corporate tiers as record counts and features grow.
When your "spreadsheet problem" is really a data problem — member directories, order tracking, project registers, anything where many people create and look up records — Knack is a legitimate, approachable fix, cheaper at entry than Caspio and simpler to learn.
Where It Falls Short
It's for records, not calculations. Knack's equation and formula fields handle basic arithmetic and rollups, but they're a fraction of Excel's formula language. Multi-sheet models, deep lookup chains, iterative calculations, and scenario logic don't translate. If people use your spreadsheet to compute answers rather than store records, Knack is the wrong shape.
VBA doesn't make the trip. Macros don't run — their behavior has to be dropped or rebuilt. Workbooks that depend on VBA need a different route entirely; see our page on converting Excel VBA to a web application.
Record limits define your tier. Plans are capped by database records and storage, so growing data pushes you up the pricing ladder. The Starter tier's limits are easy to outgrow, and Corporate pricing approaches what a custom build costs — every year.
You rent, you don't own. No source code, no self-hosting. Stop paying and the application — and the workflows your team built around it — goes away.
The Alternatives
1. Caspio (from ~$45/mo, realistically $100s/mo)
The heavyweight in the same category: more capable, more compliance options, unlimited app users — at a meaningfully higher price. Right when Knack feels too small; wrong when Knack already feels expensive. Full breakdown on our Caspio alternatives page.
2. Airtable (~$20–45/user/mo)
A friendlier spreadsheet-database hybrid, strong for internal team trackers with light automation. Per-seat pricing compounds with team size, and it's weaker than Knack for public-facing portals with user logins.
3. Glide or AppSheet (~$5–199/mo)
Better when the goal is a polished mobile app on top of your data rather than a database portal. Same core limitation — your spreadsheet's logic is rebuilt, not transferred. See our Glide alternatives page.
4. Custom development ($500–$5,000 one-time — what we do)
A developer converts your spreadsheet — formulas, VBA, and all — into a web application you own outright, verified side by side against the original workbook. When you need both a database and your calculation logic (a quoting system with client records, an analyzer that saves scenarios), custom development delivers both in one tool with no subscription. Our guide on converting Excel to a web application compares every approach.
To see what custom development produces where Knack's record-centric model runs out, browse a few real conversions: a tax deed property investment analyzer combining stored deals with deep financial logic, a property lettings CAC calculator, and a UK corporation tax calculator with multi-band rate logic — each one formula-verified against the original Excel file.
| Option | Cost model | Complex formulas | VBA | Own the result |
|---|---|---|---|---|
| Knack | From ~$49/mo to ~$250/mo | Basic equation fields | No | No |
| Caspio | From ~$45/mo + overages | Rebuilt as calculated fields | No | No |
| Airtable | ~$20–45/user/mo | Own formula language | No | No |
| Glide / AppSheet | ~$5–199/mo | Rebuilt, limited | No | No |
| Custom development | $500–$5,000 one-time | Exact replication | Converted to JS | Yes |
Vendor pricing is published starting pricing as of August 2026 — check each vendor's site for current plans.
Common Questions
For pure database applications, Caspio is the more capable (and pricier) platform, and Airtable the friendlier internal option. For polished mobile apps over your data, Glide or AppSheet. For spreadsheets whose value is their calculation logic — quoting engines, financial analyzers, calculators — custom development is the strongest alternative: your exact formulas in code you own, with no record limits or monthly fees.
Only partially. Knack imports your data and offers equation fields for basic arithmetic, sums, and rollups — but Excel's deeper formula language (nested conditions, lookup chains across sheets, array logic, iterative calculations) has no equivalent, and VBA macros don't run. Data-heavy workbooks translate well; formula-heavy workbooks lose their engine.
Entry pricing starts around $49/month (often with a lower intro rate), but plans are capped by record counts and storage, so growing data moves you toward the ~$110/month Pro and ~$250/month Corporate tiers. At Corporate pricing you're spending $3,000/year — comparable to a one-time custom build you would own permanently.
When your tool needs real calculation logic, when it faces clients under your brand, or when the subscription math stops making sense. A custom build is a one-time $500–$5,000 fee: your formulas exactly replicated and verified, a database included when needed, hosted where you choose for $5–20/month, and no platform that can raise prices or sunset features underneath you.
Comparing other tools? See our takes on Caspio, ConvertCalculator, Glide, Trunao, Sheetcast.
Not Sure Which Route Fits Your Spreadsheet?
Send us your Excel file. We'll tell you honestly — including when a no-code tool is the smarter buy — and give you a fixed price if custom development is the right fit.