The Stacker Insider’s Guide
Everything we know about Stacker in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Stacker
The Insider’s Guide
No-code customer portals and internal tools built on Airtable data
Every plan, grade, refund rule and rival among AI app builders, read from Stacker’s own pages.
Made by Stacker Software Ltd · checked Nov 13, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Stacker’s own pages, its app-store listings and our grades. Every fact in it is on Stacker’s page too, where it is kept up to date. Checked Nov 13, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.2
GPA, above 23 of the 89 other AI app builders we grade
Stacker is a no-code platform that turns data held in Airtable, Google Sheets or a SQL database into apps people log in to, such as customer portals, internal tools and partner apps. Your data stays in its source and Stacker reads and writes it, with permission rules enforced on the server.
To get you started, here are 9 things to know about Stacker, taken from its own pages and our grades.
No store rating on record, and you build the app yourself and connect your data.
- 1
Best for client portals and internal tools on top of your data
Stacker turns spreadsheets and databases into portals and internal tools, with permission rules and a custom domain.
- 2
Paid plans start at $29 a month
As its pricing page puts it: $29 per month, billed monthly.
- 3
You can try it first
30-day free trial with every feature unlocked, no credit card required
- 4
It runs on Web
Web.
- 5
Customer portals
Give customers, clients and partners a branded login where they see and edit only the records and columns you allow.
- 6
Internal tools
Build interfaces for your own team on top of an existing base or spreadsheet, without waiting on developers.
- 7
Two-way data sync
Stacker links to Airtable, Google Sheets and Stacker's own tables on every plan, and keeps the source and the app in sync both ways.
- 8
A 2.2 GPA, above 23 of 89
That is against the other AI app builders we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace Stacker you would be making a builder that other people can use without writing code. That is not a weekend's work, with an AI app builder or without one.
Stacker at a glance
- Pricing
- Free trial, from $29 per month, billed monthly
- Free plan
- No
- Free trial
- 30-day free trial with every feature unlocked, no credit card required
- Runs on
- Web
- Made by
- Stacker Software Ltd
- Category
- AI App Builders
- Our grade
- 2.2 GPA, fair
The report card
Best for client portals and internal tools on top of your data
Stacker turns spreadsheets and databases into portals and internal tools, with permission rules and a custom domain. Starter at $29 a month stops at 1 app and 5 internal users, the larger limits need Plus at $149, and its AI agents are sold separately.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | C | Starter is $29 a month, just over the category's $25 dearer-quarter line, but it is capped at 1 app and 5 internal users. Plus is $149. |
| Free plan and trial | C | A 30-day free trial with every feature unlocked and no card needed. After that, nothing is free. |
| Features | C | Portals, internal tools, two-way data sync, permission rules and a custom domain. SQL and Salesforce connectors are Enterprise only, and AI agents are a separate product. |
| Ease of use | C | No store rating on record, and you build the app yourself and connect your data. |
| Platforms and integrations | B | Web, with four data-source integrations listed. No phone or desktop app. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Stacker is for
- Fits if you want a client portal on top of a spreadsheet or database
- Works for small teams of up to 5 inside users and one app
Who it is not for
- Tight if you grow: Starter is 1 app, 5 internal users, 50 external users
- Pricey if you want unlimited outside users and custom scripts, which need Plus at $149 a month
- Watch out: SQL and Salesforce connectors and SSO are Enterprise only
- Watch out: the AI agents are sold as a separate product
- Skip it if you want a free plan, as only a 30-day trial exists
Good to know
Good for
- Teams that already keep their data in Airtable or Google Sheets
- Agencies and service firms that need a client login area
- Operations teams building internal tools without developers
Worth knowing
- Starter is capped at 1 app, 5 internal users and 50 external users.
- Unlimited external users, 100,000 records per app and custom CSS and scripts need Plus at $149 a month.
- SQL and Salesforce connectors and enterprise SSO are Enterprise-only.
- Stacker's AI agents are sold as a separate product and are not part of these plans.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$29
A month to start
Stacker is a paid product with a free trial, starting at $29 per month, billed monthly.
Starter
$29
per month, billed monthly
1 app, 50 external and 5 internal users, 10 tables, one portal with a custom domain.
Plus
$149
per month, billed monthly
100,000 records per app, unlimited external users, 3 roles, 20 tables, custom CSS and scripts.
Enterprise
Custom
Enterprise SSO, SQL and Salesforce connectors, unlimited roles, tables and apps. Sold through sales.
Trying it first
30-day free trial with every feature unlocked, no credit card required
Read from stackerhq.com on Nov 13, 2026.
Ways to pay less
Nonprofit
Discounts for nonprofits and education
The pricing FAQ says non-profits and education organizations can get in touch to ask about discounts; no amount is published.
Stated on stackerhq.com
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
No-code customer portals and internal tools built on Airtable data. Here is what it does, as its own site describes it, and what it covers: databases, workflow automation, app builder, no-code.
Portals, internal tools, two-way data sync, permission rules and a custom domain.
- Customer portals
- Give customers, clients and partners a branded login where they see and edit only the records and columns you allow.
- Internal tools
- Build interfaces for your own team on top of an existing base or spreadsheet, without waiting on developers.
- Two-way data sync
- Stacker links to Airtable, Google Sheets and Stacker's own tables on every plan, and keeps the source and the app in sync both ways.
- Permission rules
- Row- and column-level access is set per role and enforced on the server; Plus allows 3 roles per app and Enterprise unlimited roles.
- Custom domain
- Starter includes one portal on a custom domain, and Plus adds custom CSS and scripts for finer control of the look.
Where it runs
- Web
What it works with
- Airtable
- Google Sheets
- SQL
- Salesforce
Stacker is made by Stacker Software Ltd.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
23/89
Other AI app builders it is graded above
Stacker's GPA of 2.2 is higher than 23 of the 89 other AI app builders we grade, and level with 27.
It stands best on platforms and integrations (B, above 29 of 89) and worst on ease of use (C, above 1).
Its paid plans start at $29 a month, against a middle price of $20 for the category: 68 of the 82 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 24 tools score higher and cost less.
Each grade against the category
Every bar is all 90 AI app builders we grade, cut by the letter each got. Stacker’s own letter is outlined.
- CValue for moneyAbove 19 of 89
- CFree plan and trialAbove 7 of 89
- CFeaturesAbove 2 of 89
- CEase of useAbove 1 of 89
- BPlatforms and integrationsAbove 29 of 89
Price against what you get
Each dot is one of 85 AI app builders. Further left costs less; higher up scores better on features, ease of use and platforms. Stacker is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace Stacker you would be making a builder that other people can use without writing code. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 39 of the 89 other AI app builders grade higher. It costs $348 a year.
What you could not
- A builder that other people can use without writing code.
- A tool that builds and hosts other apps.
- Connections to other products, each kept working as those products change.
- Databases with views, filters and links between them.
What this rests on. Stacker’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Softr, Glide, Bubble, Adalo and Retool
The 5 tools Stacker is most often weighed against, with where each one differs from it.
- 2.4GPA
Softr
Free plan · from $19/mo
No-code builder for client portals and internal tools, with AI.
- Softr has a free plan. Stacker does not, though it has a free trial.
- Softr also covers forms.
- 2.4GPA
Glide
Free trial · from $25/mo
AI builder that turns spreadsheets into internal business apps.
- Stacker also covers databases.
- Glide also covers AI agents.
- 2.2GPA
Bubble
Free plan · from $32/mo
No-code visual builder for web and native mobile apps, with AI.
- Bubble has a free plan. Stacker does not, though it has a free trial.
- Stacker also covers databases and workflow automation.
- 2.2GPA
Adalo
Free plan · from $65/mo
No-code builder for native iOS, Android and web apps, with AI.
- Adalo has a free plan. Stacker does not, though it has a free trial.
- Stacker also covers workflow automation.
- 2.8GPA
Retool
Free plan · from $10/mo
Platform for building internal apps, workflows and AI agents.
- Retool has a free plan. Stacker does not, though it has a free trial.
- Retool is self-hostable, according to its own site.
- Stacker also covers databases.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
13
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Stacker free?
No, Stacker is a paid product, but you can try it first. 30-day free trial with every feature unlocked, no credit card required.
How much does Stacker cost?
Stacker lists 3 plans. Starter: $29 per month, billed monthly.
What platforms does Stacker work on?
Stacker is available on Web.
Does Stacker offer any discounts?
Stacker publicly lists the following: Discounts for nonprofits and education.
Does Stacker have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Stacker is listed for Web.
Does Stacker have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Stacker is listed for Web.
Is Stacker open source?
Stacker is not described as open source on its own site, as read on Nov 13, 2026.
What does Stacker integrate with?
Stacker's listing names Airtable, Google Sheets, SQL and Salesforce. A listing names up to eight integrations, so it may connect to more.
Who makes Stacker?
Stacker is made by Stacker Software Ltd.
What are the alternatives to Stacker?
The closest alternatives to Stacker in our directory are Softr, Glide, Bubble, Adalo and Retool.
How does Stacker compare with other AI app builders?
Stacker's GPA of 2.2 is higher than 23 of the 89 other AI app builders we grade, and level with 27.
Is Stacker good value for money?
ToolGPA grades Stacker C for value for money. Its paid plans start at $29 a month, against a middle price of $20 for the category: 68 of the 82 others that charge start lower.
Could I make my own version of Stacker?
To replace Stacker you would be making a builder that other people can use without writing code.
Where this guide comes from
The prices, plans, platforms and features were read from Stacker’s own pages on Nov 13, 2026, and the grades were given on Nov 13, 2026. Graded from this listing, whose facts were read from Stacker's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Stacker Software Ltd. Prices change, so check stackerhq.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Stacker, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/stacker
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Stacker: The Insider's Guide", checked Nov 13, 2026. https://toolgpa.com/tools/stacker
Know someone choosing between AI app builders?
Send them this guide: toolgpa.com/tools/stacker/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded AI app builders after Stacker, each with an Insider's Guide of its own.
- AI App Builders Insider's GuideEvery one of the 90 AI app builders we grade, compared
- Taskade Insider's GuideWorkspace that builds apps, AI agents and automations from prompts3.2 GPA
- Google AI Studio Insider's GuideGoogle's workspace for building apps and prototypes with Gemini3.0 GPA
- Replit Insider's GuideCloud platform where an AI agent builds, hosts and publishes apps3.0 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Stacker’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Stacker is a trademark of its owner, and this guide is not made, paid for or approved by Stacker Software Ltd. Prices and plans change: check stackerhq.com before you buy.