Comparison

Flex For Work vs Knuckl

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Flex For Work

Find, book, and get paid for delivery, moving, or labor jobs. Browse nearby opportunities, view job details, and track your earnings in real time. This app simplifies managing your work and income.

Highlights
  • Find delivery, moving, and labor jobs
  • Book jobs directly through the app
  • Track earnings in real time
  • View detailed job information
  • Accept or decline job offers
Features
Read full description

Flex Partner is the all-in-one app designed for partners who want to find, book, and get paid for delivery, moving, or labor jobs, all from one place. Whether you're looking to do deliveries or assist with residential or commercial moves, the Flex Partner app makes it easy to browse nearby opportunities, view job details, accept or decline offers, and track your earnings in real time.

About

Knuckl

This app connects construction workers with job opportunities and helps contractors find skilled labor quickly. It allows users to create profiles, set rates, and manage schedules, facilitating same-day matching for both parties.

Highlights
  • Create free worker profiles
  • Find local construction jobs
  • Post jobs in under two minutes
  • Hire skilled tradespeople
  • Direct messaging with contractors
  • Manage schedules and crew
Features
Read full description

Knuckl is the construction marketplace for trade pros. Find work, win jobs, hire your crew and grow your own business, all in one app. FOR TRADE BUSINESSES • Fresh permit leads: recent permits with checked phone numbers. Wrong number? You get the lead back. • 1-tap crew call: need two helpers tomorrow? Post it in seconds. Workers see the city, never your address. • Estimates by text: send a link, and your client reads it and taps Approve. They don't need the app. • Payment requests with no fees: send a pay link and the money goes straight to you. Knuckl never takes a cut. • Verified Pro pass: the Licensed badge appears only after a real state license check, and Insured only after an approved insurance certificate. • Connect: build your circle of pros who already work your area. FOR WORKERS • Find work near you: day work, crew spots and side jobs, with pay shown up front. Apply in a tap. • Win your own jobs: send estimates your clients approve by text. • Share your work card: one link with your trade, photos and reviews. • Ask for reviews after every job. • Start your business: a simple guide to LLC filing, getting an EIN, insurance and the license path. FROM HAND TO BOSS Start with a shift and grow into your own business at your own pace: Hand, Side Jobber, Operator, Contractor. HONEST PRICING • Free to join. Hiring, Connect and business tools are free. • Your first 2 leads are free once your phone is verified. • After that, it's $19 to unlock a lead, or you can use one lead credit. • No lead locks and no required subscription. YOUR PRIVACY, PROTECTED • We never ask for your Social Security number or government ID. • Homeowner addresses are never shown to workers. • Knuckl doesn't process your money. Clients pay you directly. Available in English, Spanish, Portuguese, Haitian Creole and French. Sign in with Apple or email.

Screenshots

Flex For Work4 screens
Knuckl4 screens

Verdict

The call

The clearest difference is rating: Knuckl at 5.0 against Flex For Work's 3.0. Knuckl also leads on update cadence (every 5 days vs every 3 weeks) and device support (3 vs 1). Flex For Work's advantage is ratings volume (90 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Knuckl holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Flex For Work has 90 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Flex For Work ships an update every 3 weeks, Knuckl every 5 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

Scorecard4 real differences · 6 level
Flex For Work versus Knuckl: the parameters behind the verdict, then further details
ParameterFlex For WorkKnuckl
PriceFreeFree
Rating3.0 (90 ratings)5.0 (4 ratings) — better
Positive reviews26.1% of reviews—
Number of ratings90 — better4
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.415.5 — better
Further details — not scored
Size110 MB38 MB
Age rating4+17+
DeveloperFlex Moving & StorageKnuckl LLC

Customer experience

Flex For Work

All ratings88 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews46 reviews
Positive26.1%
Neutral0.0%
Negative73.9%

Knuckl

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Flex For Work

No in-app purchases

None

Knuckl

No in-app purchases

Questions

Is Flex For Work free?
Flex For Work is free to download, with no in-app purchases.
Is Knuckl free?
Knuckl is free to download, with no in-app purchases.
Which has better reviews, Flex For Work or Knuckl?
Knuckl is rated higher. Flex For Work averages 3.0 out of 5 from 90 ratings, while Knuckl averages 5.0 from 4 ratings.
Do Flex For Work or Knuckl have ads?
Neither Flex For Work nor Knuckl shows ads.
Which is updated more often, Flex For Work or Knuckl?
Flex For Work ships an update every 3 weeks, and Knuckl every 5 days. Most recently, Flex For Work was updated on November 8, 2026 and Knuckl on November 9, 2026.

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