---
{"title": "CSVBox vs Flatfile in 2026: Pricing and Setup", "description": "CSVBox, Flatfile and RoloDexter compared on what each does, what each costs, how each is set up and what to check before you pick a CSV mapping tool.", "url": "https://saydeploy.com/csvbox-vs-flatfile/", "date": "2026-10-11"}
---
CSVBox, Flatfile and RoloDexter compared on what each does, what each costs, how each is set up and what to check before you pick a CSV mapping tool.

CSVBox imports CSV and other files and pushes validated rows to many destinations. Flatfile describes itself as AI data preparation and migration software. RoloDexter maps contact CSV headers onto a fixed set of fields on your own machine.

| Option | Free to use | Paid plan | Install |
|---|---|---|---|
| CSVBox | Sandbox, $0 per month, free forever [^1] | Starts at $19/month [^2] | not published |
| Flatfile | Development and test data usage is always free [^3] | not published | not published |
| RoloDexter | Free [^4] | No paid tier [^4] | pip or npm [^4] |

## The short answer

CSVBox imports files such as CSV and Excel [^2] and can push validated rows to destinations such as a webhook, Postgres and Google Sheets [^2]. Flatfile describes itself as AI data preparation and migration software [^5]. RoloDexter maps contact field names onto a canonical schema of 62 fields [^4].

On needs, CSVBox's page covers files up to 500 MB, streamed [^2], and a Private Mode that runs the importer in the user's browser [^2]. Flatfile's page covers ingesting from uploads, APIs, webhooks, databases and cloud storage [^5]. RoloDexter's claims cover local mapping without an API key [^4].

## What CSVBox, Flatfile is built for

CSVBox's page says it supports imports of up to 2M rows per import [^2]. It lists CSV, Excel, PDFs, images and document files [^2]. It says data is encrypted in transit with TLS 1.2+ and at rest with AES-256 [^2]. It says SOC 2 and GDPR compliance are included on every plan [^2]. It also offers an MCP server that exposes importer-sheet management as tools AI clients can call [^2].

Flatfile's page says it helps enterprises prepare, map, clean, transform and validate data [^5]. It says it supports nested fields, linked records and multi-sheet relationships [^5]. Its mapping engine draws from billions of prior decisions [^5]. It says it helps teams complete migration projects 70% faster [^3]. It has renamed its company to Obvious [^5].

## What RoloDexter is built for

RoloDexter is made by the team that publishes this site.

It maps contact field names onto a canonical schema of 62 fields through a four-layer pipeline, and the last layer detects emails, phones, URLs and postal codes by data shape [^4]. Each match records a confidence score and the strategy that produced it [^4]. It cleans values, for example phones to E.164 and countries to ISO 3166-1 alpha-2 [^4].

The rolodexter profile command reports the match rate and which headers went unmapped, without writing output [^4]. The rolodexter map command converts CSV and JSONL files [^4]. Large exports are processed in constant memory [^4]. You can resolve headers once and replay that plan on later runs [^4]. Core mapping runs locally without an API key [^4].

## Pricing and fees

CSVBox's Sandbox plan is free forever at $0 per month [^1]. It includes 100 imports per month with up to 5 rows each [^2]. Paid plans start at $19/month and scale with rows imported, with no per-seat fees [^2]. The Plus tier allows 2 million rows per import [^2].

Flatfile does not charge by the seat [^3]. Data usage for development and test purposes in your development environment is always free [^3]. Its sources here give no plan prices, so they are not published here. Flatfile says all usage and billing is based on UTC [^3].

RoloDexter is free, with no paid tier [^4]. It is released under the MIT licence [^4].

## Setting it up and daily use

The CSVBox sources here say nothing about installing it. They do say it can push validated rows to destinations such as Postgres and Airtable [^2], and that Private Mode runs the importer entirely in the user's browser [^2].

Flatfile's sources here say nothing about installation. They say it supports ingesting data from uploads, APIs, webhooks, databases and cloud storage [^5].

RoloDexter is installed with pip or npm [^4]. It ships as a Python package and as a JavaScript/TypeScript package [^4]. The Python package needs Python 3.10 or newer [^4]. Day to day, you can run profile to check a file first [^4], then map with the --strict, --override and --dedupe options [^4]. In Python, map_dataframe renames and normalizes a pandas DataFrame when the pandas extra is installed [^4].

## Things to check before you choose

Ask where file data goes. CSVBox's Private Mode keeps file data from reaching CSVBox servers [^2], and RoloDexter's core mapping runs locally [^4]. Check Flatfile's own pages for its data handling, since the facts here do not cover it.

Ask about file size and row limits. CSVBox lists per-import limits by plan [^2].

Ask what the final price is for your volume. CSVBox paid plans scale with rows imported [^2], and Flatfile's prices are not published here.

Ask which file types you must read. RoloDexter's claims name CSV and JSONL files [^4].

Ask if any optional step calls an outside service. RoloDexter's i18n generator calls Google Translate once, as a step you run yourself [^4].

## How to choose

If you need large file imports with streaming, CSVBox's page describes files up to 500 MB [^2].

If you want rows pushed to other systems, CSVBox lists more than 20 destinations [^2].

If you need to bring data in from uploads, APIs, webhooks, databases or cloud storage, Flatfile's page says it supports that [^5].

If you need nested fields and linked records, Flatfile's page describes them [^5].

If you want a free tool for mapping contact headers that runs locally, RoloDexter's claims describe that [^4] [^4].

If you want a repeatable mapping plan, RoloDexter lets you replay a resolved plan on later runs [^4].

## Frequently asked questions

### Is CSVBox free to use?

CSVBox's Sandbox plan is free forever at $0 per month [^1]. It includes 100 imports per month with up to 5 rows each [^2]. Paid plans start at $19/month and scale with rows imported, with no per-seat fees [^2]. Check its pricing page for current limits.

### Does Flatfile charge per seat?

Flatfile's page says it does not charge by the seat, so you can invite as many users as you need [^3]. It also says data usage for development and test purposes in your development environment is always free [^3]. The facts here give no plan prices, so they are not published here.

### Is Flatfile now called Obvious?

Flatfile's page says it has renamed its company to Obvious, which is also the name of its newest AI agent [^5]. The facts here say nothing more about how the product name or pricing changed, so check its current pages before you decide.

### Is RoloDexter free and how is it installed?

RoloDexter is free, with no paid tier [^4]. It is released under the MIT licence [^4]. You install it with pip or npm [^4]. The Python package needs Python 3.10 or newer [^4].

### Can CSVBox keep file data out of its servers?

CSVBox's Private Mode runs the importer entirely in the user's browser, so file data never reaches CSVBox servers [^2]. It also says data is encrypted in transit with TLS 1.2+ and at rest with AES-256 [^2]. Check Flatfile's own pages for its data handling.

RoloDexter is free; there is no paid tier. [^4] - [Visit RoloDexter](/go/csvbox-vs-flatfile)

## Sources

[^1]: CSVBox, csvbox.io/pricing, read 2026-10-08 (https://csvbox.io/pricing)
[^2]: CSVBox, csvbox.io, read 2026-10-08 (https://csvbox.io)
[^3]: Flatfile, flatfile.com/pricing, read 2026-10-08 (https://flatfile.com/pricing/)
[^4]: RoloDexter's own description of itself (the product of this site's publisher) (/go/csvbox-vs-flatfile)
[^5]: Flatfile, flatfile.com, read 2026-10-08 (https://flatfile.com)
