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Grimoire vs Moxfield
Build from your collection, not from a database
Moxfield is a fast, deep deck builder, and plenty of players should keep using it. Grimoire starts somewhere else: from the cards you already own, with a companion that builds the deck with you and explains every choice.
Fair's fair
What Moxfield does well
Moxfield is the deck builder a lot of Commander players live in, and it earns that. Its builder is fast and keyboard-first, its collection model tracks every printing down to condition and binder, and it has deck history, primers, playtesting and cross-retailer buy buttons. If you want a list-editing power tool, it's a very good one.
Side by side
Feature by feature
Both are free to use. Where Moxfield is listed, it's what Moxfield's own pages (or our walkthrough of them) show, and we've left out anything we couldn't confirm.
| Feature | Grimoire | Moxfield |
|---|---|---|
| Deck building | Commander, Brawl, Standard, Modern, Pioneer, Pauper, Legacy and Vintage, with legality checked and a price on every card. | A fast builder with text and visual views, grouping, sorting, tags and keyboard quick-add. |
| Help choosing cards | The Familiar proposes cards one pillar at a time, each with a reason, preferring cards you own. Nothing lands until you approve it. | Card recommendations available inside the deck builder. |
| Collection tracking | Quantity, printing, finish, condition, language and what you paid, organised into binders. | Printing, finish, condition, language and purchase price per entry, organised into binders. |
| What you own vs. what you need | Every deck shows how close it is to built, names the exact cards missing and totals what they'd cost. | A collection overlay in the builder marks which cards you own. |
| Commander brackets | Computed for every deck from its list, with your own override. | Commander Brackets shown on the deck page. |
| Playtesting | Solo playtest in the browser: draw, mulligan and goldfish your deck. | In-browser playtest. |
| Deck guides | Every deck gets a Codex: a strategy manual written from your actual list. | Primers: long-form deck guides written by the deck's author. |
| Deck history | A change history on every deck. | Version history with compare. |
| Prices | Daily price snapshots, portfolio value over time, and a cost basis that knows pack pulls from purchases. | Live prices from several retailers, with buy buttons for each. |
| What it costs | Free. The Familiar runs on a monthly mana allowance (prices in the questions below). | Free, supported by ads; Patreon supporters can remove them. |
Deck building
- Grimoire
- Commander, Brawl, Standard, Modern, Pioneer, Pauper, Legacy and Vintage, with legality checked and a price on every card.
- Moxfield
- A fast builder with text and visual views, grouping, sorting, tags and keyboard quick-add.
Help choosing cards
- Grimoire
- The Familiar proposes cards one pillar at a time, each with a reason, preferring cards you own. Nothing lands until you approve it.
- Moxfield
- Card recommendations available inside the deck builder.
Collection tracking
- Grimoire
- Quantity, printing, finish, condition, language and what you paid, organised into binders.
- Moxfield
- Printing, finish, condition, language and purchase price per entry, organised into binders.
What you own vs. what you need
- Grimoire
- Every deck shows how close it is to built, names the exact cards missing and totals what they'd cost.
- Moxfield
- A collection overlay in the builder marks which cards you own.
Commander brackets
- Grimoire
- Computed for every deck from its list, with your own override.
- Moxfield
- Commander Brackets shown on the deck page.
Playtesting
- Grimoire
- Solo playtest in the browser: draw, mulligan and goldfish your deck.
- Moxfield
- In-browser playtest.
Deck guides
- Grimoire
- Every deck gets a Codex: a strategy manual written from your actual list.
- Moxfield
- Primers: long-form deck guides written by the deck's author.
Deck history
- Grimoire
- A change history on every deck.
- Moxfield
- Version history with compare.
Prices
- Grimoire
- Daily price snapshots, portfolio value over time, and a cost basis that knows pack pulls from purchases.
- Moxfield
- Live prices from several retailers, with buy buttons for each.
What it costs
- Grimoire
- Free. The Familiar runs on a monthly mana allowance (prices in the questions below).
- Moxfield
- Free, supported by ads; Patreon supporters can remove them.
Moxfield details come from our own read-only walkthrough of the site on 17 June 2026. If something here has changed, tell us and we'll fix it.
The Familiar
What the Familiar adds
Grimoire's Familiar is your companion for building decks. It doesn't hand you a list; it builds one with you, and shows its work.
Pillar by pillar, not a pasted 99
The Familiar lays out the deck's pillars from your commander (the engine, ramp, card draw, interaction, protection, the mana base) and suggests cards for one at a time. Each card it stages comes with the job it's doing, and you keep or cut it before it touches your list.
It cites the rule
When a rules question comes up, the Familiar answers from the official Comprehensive Rules text and gives you the rule number, so you can check it at the table. The rules page answers any card interaction the same way.
It knows what you own
The Familiar reaches for cards in your collection first and marks everything else as a buy, so the list you end up with is one you can mostly sleeve tonight. Your bracket and legality come from the card data, not from its say-so.
Switching over
Import from Moxfield
Your cards and decks come with you. Here is exactly how, and what each route supports.
Bring your collection
Moxfield's collection CSV imports as-is.
Export from Moxfield
Export your collection (or a single binder) from Moxfield as a CSV file.
Import on Grimoire
Open Collection, choose Import, and pick the file. Grimoire reads the header row, so the column order doesn't matter, and matches each row to its exact printing by set code and collector number. Condition names like "Near Mint" are understood.
Check the preview
Anything that didn't match is listed before a single card is added. Importing the same file again sets each pile to the file's count instead of doubling it.
Bring a deck
Moxfield doesn't let other apps read its decks, so a link can't be fetched. The export-and-paste route takes a minute.
Export from Moxfield
Open the deck on Moxfield, choose More, then Export, and copy the list.
Paste it into Grimoire
Open Decks, choose Import, name the deck and paste. A line like 1 Sol Ring (CMR) 472 lands on that exact printing, *F* marks a foil, and Commander and Sideboard sections are kept.
Nothing goes missing quietly
Cards that can't be matched are reported back to you, not dropped.
Straight answers
Questions
- Can I move my Moxfield collection to Grimoire?
- Yes. Export your collection from Moxfield as a CSV and import it on Grimoire's Collection page. Grimoire reads the header row, matches each row to its exact printing by set code and collector number, and lists anything it couldn't match before a single card is added. Importing the same file again sets each pile to the file's count instead of doubling it.
- Can Grimoire import a Moxfield deck from its link?
- Not from the link. Moxfield doesn't let other apps read its decks. Open the deck on Moxfield, choose More, then Export, copy the list and paste it into Grimoire's deck import. It lands on the same printings, foils included.
- Do I have to stop using Moxfield?
- No. Grimoire exports your collection and your decks as CSV files, and any deck as a plain text list, so you can keep using Moxfield alongside it.
- Does the Familiar just build the deck for me?
- It builds it with you. It lays out the deck's pillars from your commander, stages candidates for one pillar at a time with the reason for each, reaches for cards you own first, and adds nothing to your deck until you approve it. Push back, set a budget or veto a card and the build bends around you.
- What does Grimoire cost?
- The app is free: your collection, your decks, live prices, playtesting and the community pages cost nothing. The Familiar runs on a monthly mana allowance. A new account gets enough mana to try it out, and Collector is $9.99 a month and Pro $19.99 a month. Cancel any time and your collection and decks stay yours.
- Is Grimoire finished?
- No, and we'd rather say so. The web app and the iPhone app are both live. There's a feedback button on every screen, and most of what shipped lately exists because someone used it.
Free to start
Start from the cards you own.
Import your Moxfield collection, pick a commander, and build the rest with the Familiar. Free to start, no card needed.