PRISM is an AI quote generator for contractors: paste a client's text or email and it drafts a priced, branded estimate in about two minutes using your own rates. Joist is an estimate, invoice, and payments app built for contractors — you assemble estimates by hand from line items, send them, invoice, and collect payment in the app. This is the closest matchup on this site: both tools are cheap, mobile-first, and focused on paperwork rather than running crews. The real difference is who writes the estimate — you, or the AI.

The short version

Joist is a solid manual estimating app with payments and homeowner financing bolted on, priced from $10 to $32 a month as of July 2026. PRISM starts free, costs $19/month at the Pro tier, and drafts the estimate for you from the client's own message. If you like building estimates line by line and want to collect payment in the same app, Joist is a fair pick. If typing estimates on a phone keyboard is the part of your week you hate, that's the problem PRISM was built for.

Feature comparison

FeaturePRISMJoist
AI quote generation from client textsYes — paste a text or email, get a priced estimate in ~2 minutes using your ratesNo — estimates are built manually from line items
PriceFree plan; Pro $19/mo; Studio $59/mo + $15/seatBasics $10/mo, Pro $17/mo, Elite $32/mo (as of July 2026)
Quotes / estimatesYes — 15+ trade templates, PDF export, brandedYes — manual builder; logo branding and photos from Pro up
InvoicingVia QuickBooks Online — approved quotes sync as invoicesYes — built in, with online payments and homeowner financing
Scheduling / dispatchNoNo — Joist doesn't do scheduling or dispatch either
QuickBooks syncYes, on the Pro plan ($19/mo) — quotes sync to QuickBooks Online on approvalYes — available on the Pro plan ($17/mo) and up
Live approval linksYes — clients open a link and sign from their phoneClients can view and accept estimates; Pro adds client activity tracking
Free tierYes — free forever: 3 manual quotes/week + 3 AI quotes/monthNo — 14-day free trial, then paid from $10/mo

Pricing compared

Pricing as of July 2026, from each company's public pricing page. Joist offers roughly two months free on annual billing. Check current pricing before you buy.

PlanPRISMJoist
EntryStarter — free forever (3 manual quotes/week, 3 AI quotes/month)Basics — $10/mo, up to 5 documents/month, no logo or photos
MidPro — $19/moPro — $17/mo, unlimited documents, logo, QuickBooks sync
TopStudio — $59/mo + $15 per extra seatElite — $32/mo, adds reports and change orders

On price alone this is nearly a tie at the mid tier — $17 vs $19. The differences are at the edges: PRISM's entry plan is free forever while Joist's is $10/month capped at 5 documents, and Joist's payment processing has no PRISM equivalent. Pick based on the feature gap, not the two dollars.

When Joist is the better choice

  • You collect deposits or full payment through the app — Joist has payment processing built in, PRISM doesn't.
  • You offer homeowner financing on bigger jobs. That's a Joist feature with no PRISM counterpart.
  • You're on Android and want a native app. PRISM is iOS plus web; Joist has native apps on both platforms.
  • You want change orders and business reports in the same tool (Joist Elite).
  • You genuinely prefer building estimates by hand from a saved line-item library.

When PRISM is the better choice

  • Your jobs arrive as texts and emails, and retyping them into an estimate form is the bottleneck. PRISM's AI turns the message itself into the estimate.
  • You want a free plan you can actually run a slow month on, not a 14-day trial.
  • You want clients to sign from their phone through a live approval link and have the approved quote land in QuickBooks Online automatically.
  • You quote across trades — PRISM ships 15+ trade templates out of the box.

Who switches, in practice

  • The fence installer buried in texts — "hey can you do 120ft of cedar privacy fence, gate on the side?" Paste it into PRISM, and the estimate is drafted with your rates before the next stoplight.
  • The remodeler doing 3 quotes a month who resents paying $10/month for an entry plan. PRISM's free tier covers that volume, permanently.
  • The drywall sub with a QuickBooks bookkeeper — approved PRISM quotes sync straight to QuickBooks Online, so the paper trail builds itself.
  • The roofer who sells financing — this one should stay on Joist. Homeowner financing closes big-ticket jobs, and PRISM doesn't offer it.

Frequently asked questions

What's the main difference between PRISM and Joist?

How the estimate gets written. In Joist, you build every estimate by hand — pick line items, enter quantities, set prices. In PRISM, you paste the client's text or email and the AI drafts a priced, branded estimate in about two minutes using your own rates, which you then review and send. Joist counters with built-in payment processing and homeowner financing, which PRISM doesn't have.

Is PRISM cheaper than Joist?

They're close. As of July 2026, Joist runs $10/month (Basics, up to 5 documents/month), $17/month (Pro, unlimited documents), or $32/month (Elite), with a 14-day trial and no free plan. PRISM has a free forever plan with 3 manual quotes per week plus 3 AI quotes per month, and Pro is $19/month. If you send only a few quotes, PRISM costs nothing; at the unlimited tier the prices are within a couple dollars.

Can I take payments through PRISM like I can in Joist?

No. Joist has payment processing and homeowner financing built in, and that's a genuine advantage if you collect deposits or offer financing. PRISM handles the quote and approval, then syncs approved quotes to QuickBooks Online, where invoicing and payment collection happen.

Does PRISM have an Android app like Joist?

No. PRISM runs as an iOS app and a web app — Android users can use the full web app in their phone's browser, but there's no native Android app as of July 2026. Joist has native apps on both iOS and Android.

Paste a real client text. Watch the quote write itself.

The live demo on our homepage does it in front of you — no signup, no card.

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