Internal tools platform · Ranked 32 of 37 in the index
Stacker Review (2026)
A portal builder that puts a controlled, branded interface over Airtable, Salesforce or its own tables so external clients can see and edit exactly the records you allow.
3.3 / 5Last verified: · Next scheduled check: The quick answer
Assessed for 2026A narrow, competent product with an awkward price. Stacker does per-client permissions over an existing data source better than most, and the portals look respectable without design work. But it starts at 59 EUR with no free tier, the AI layer is thin, and Softr now does a broadly similar job for less. Worth a look if the permission model is genuinely the hard part of your problem. Otherwise there are cheaper routes to the same portal.
- Best for
- Consultancies and service businesses that need a per-client portal over data they already hold
- Not for
- Anyone shopping for a general app builder, or working to a small budget
- Price from
- 59 EUR
- Free tier
- No
The ten axes
Every builder in the index is scored on the same ten axes with the same published weights. This is how Stacker performed on our test briefs.
- Reliability16%
- 3.9
- Integrations16%
- 3.8
- SEO and GEO13%
- 2.5
- Design quality12%
- 3.6
- Agent performance10%
- 2.9
- Speed9%
- 3.5
- Value9%
- 3.0
- Scalability7%
- 3.0
- API and MCP access5%
- 3.1
- Code ownership3%
- 2.0
Every axis is scored from 0 to 5 stars. The percentage is that axis's published weight in the overall 3.3 rating.
The verdict
A narrow, competent product with an awkward price. Stacker does per-client permissions over an existing data source better than most, and the portals look respectable without design work. But it starts at 59 EUR with no free tier, the AI layer is thin, and Softr now does a broadly similar job for less. Worth a look if the permission model is genuinely the hard part of your problem. Otherwise there are cheaper routes to the same portal.
A portal builder that puts a controlled, branded interface over Airtable, Salesforce or its own tables so external clients can see and edit exactly the records you allow.
The dissenting view
The reviews editor argued Stacker deserves credit for permission granularity that Softr cannot match, and wanted a higher integrations mark. The gap was not large enough in our tests to move it.
One member of the panel disagreed with the consensus. We publish the disagreement rather than average it away.
What it looks like
Pricing
No free tier, paid plans from about 59 EUR per month
| Plan | Price | Billing | What you get |
|---|---|---|---|
| Starter | 59 EUR | monthly | One app, core permissions, custom domain |
| Pro | 149 EUR | monthly | More apps and users, Salesforce, advanced rules |
Feature by feature
The same eleven checks, run on every builder in the index.
| Capability | Status |
|---|---|
| Full-stack backend | No, portal layer over a data source |
| Database included | Yes, or connect Airtable and Salesforce |
| Auth included | Yes, per-client permissions |
| Code export | No |
| GitHub sync | No |
| One-click deploy | Yes |
| Custom domain | Yes |
| Mobile or native output | Responsive web only |
| Team collaboration | Yes |
| Public API or MCP server | Limited |
| Self-hosting the output | No |
What works / What does not
What works
- Per-client permission model is more granular than most portal tools
- Connects to Salesforce as well as Airtable, which is unusual at this price
- Portals look professional with no design work
What does not
- No free tier and a high entry price
- Thin AI capability compared with the rest of the cohort
- Softr covers most of the same ground for less money
User reviews
9 ratings for Stacker, editor panel first. Community ratings accumulate on top of our seeded launch score.
Community rating
- 5 ★33%
- 4 ★33%
- 3 ★11%
- 2 ★11%
- 1 ★11%
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- Editor panel
The permission rules earned the price for this one client
Aoife Brennan@aoifebrennan
Independent consultant. I have built the same client portal on four different platforms.
A client needed each of their customers to see a different subset of the same records with different edit rights per field. Softr could not express it, Stacker could, in an afternoon. That is a narrow reason to buy a tool and it was the right reason here. For a simpler portal I would not pay this.
- Pros
- Most granular permission model of the portal tools.
- Cons
- Price only makes sense when the rules are genuinely complex.
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- Editor panel
Good product, awkward position in the market
Rafael Otero@rafaelotero
Runs a six-person studio building client web apps. Cares about handover more than novelty.
Built two client portals on it and both clients were happy. My problem is commercial rather than technical: there is no free tier to prototype in, and Softr does eighty per cent of the job for less, so justifying it to a client requires a conversation I usually lose. Fine tool, hard sell.
- Pros
- Reliable and looks professional with no design work.
- Cons
- No free tier and hard to justify against cheaper competitors.
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Frequently asked
- What is Stacker for?
- Client-facing portals over data you already hold, where each client must see only their own records.
- Stacker or Softr?
- Softr for most portals, on price and speed. Stacker when the permission rules are complex or the data lives in Salesforce.
- Is there a free plan?
- No. Paid plans start at about 59 EUR per month.
Sources
- Stacker product site · 14 August 2026
- Stacker pricing page · 14 August 2026