Comparison

Cashflow Engineers vs 567Sing

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

Head to head
About

Cashflow Engineers

Features
Read full description

This is the educational and communication platform for the Cashflow Engineers investing community. Cashflow Engineers was founded on this simple mission: To educate and empower engineers and high-tech professionals, and arm them with elite investing skills to match their elite technical skills. We pivot away from the broken accumulation model of investing, and embrace the cashflow model of wealth-building, as outlined by Robert Kiyosaki in "Rich Dad Poor Dad". When you join the Cashflow Engineers community, you'll learn all about the easiest, least risky, and most scalable way to build passive cashflow using your investment capital: Building your own portfolio of out-of-state turnkey rental homes. That's right: You don't have to limit your real estate investments to your own overpriced market. You really can live where you want and invest where it makes sense, all while working a successful and demanding career. We will show you how. Follow in the footsteps of many others who rapidly scaled up a portfolio of multiple houses, generating thousands of dollars per month in positive cashflow, all utilizing typical high-tech compensation resources like RSU's and bonuses. IMAGINE... Tapping into multiple sources of affordable, quality houses in attractive markets nationwide. Investing with instant cashflow from day one, with no rehabbing or waiting for rents to rise. Getting all the benefits of real estate as a true passive activity; no dealing with tenants or toilets! Being on the right side of inflation, and actually benefitting from it! Best of all, this can be achieved while working a demanding and successful career, using typical high-tech compensation resources like RSU's & bonuses. Download the app today to learn more, and get free information about how to build passive income through real estate, without diverting time or energy from a demanding high-tech career.

About

567Sing

Develop your vocal abilities and stage presence with a method designed for dancers. Learn techniques, set goals, and receive expert guidance to confidently perform. Stand out in competitive dance and auditions.

Highlights
  • Dance Voice Method by Broadway Star
  • Vocal technique development
  • Goal setting and progress tracking
  • Individual coaching and guidance
  • Community of competitive dancers
  • Access to expert vocal support
Features
Read full description

Find your Dance Voice and separate yourself from other dancers in an extremely competitive industry. Join competitive dancers from around the country and unleash your inner singer, build long-lasting vocal techniques, and become a multi-dimensional dancer with the brand new 567sing app, and the DANCE VOICE METHOD developed by Broadway Star Curt Hansen. Imagine being a competitive dancer who can sing with confidence when you leap onto the stage, and during auditions. Here's how you can level up as a dancer: Step 1: Follow The Dance Voice Method designed specifically for dancers like you by Broadway Star Curt Hansen Step 2: Set inspiring vocal goals and conquer exercises tailored to your progress. Step 3: Experience the power of individual coaching and guidance from an industry professional. Step 4: Take on the challenge and stand out in your dance community. “567sing has given me the vocal confidence to dream big, have fun, and go for it!” - Aidan Glaz “I have been a dancer my whole life, and now I can confidently sing to a room full of people.” - Natalie Sterling “Before this course, I never sang by myself but I just finished my senior year musical with a lead role!” -Taylor Nitz “I learned that there’s nothing holding me back from singing except for my own fears about singing.” -Amanda Patrick When you join us today: 1. Basic: Learn the 3 Pillars of the Dance Voice Method 2. Pro: Leap higher with your voice, immerse yourself in our vibrant community of competitive dancers, gain access to invaluable resources, and receive 1:1 expert vocal support. Download the app for free and start your journey today! INFORMATION ABOUT THE APP AND PURCHASE OPTIONS By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync. The download of 567Sing is free of charge. Should you use 567Sing to access in-app content via available subscription(s), a payment will be charged to your credit card after the trial period ends and when a subscription renews. A subscription renews automatically unless canceled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Subscription(s) can be managed and auto-renewal turned off in Account Settings in the App Store after purchase. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy

Screenshots

Cashflow Engineers2 screens
567Sing4 screens

Verdict

The call

The clearest difference is in-app purchases: Cashflow Engineers at none against 567Sing's 18. Cashflow Engineers also leads on iOS requirement (15.1 vs 26.0). 567Sing's advantage is update cadence (every 6 weeks vs every 5 months). On price, ads and device support 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. 567Sing sells 18 in-app purchases, starting at $4.99 per month. Cashflow Engineers asks for nothing beyond the download.

UpkeepUpdate frequency

Cashflow Engineers ships an update every 5 months, 567Sing every 6 weeks. The most recent releases landed on September 8, 2026 and September 13, 2026 respectively.

Scorecard3 real differences · 7 level
Cashflow Engineers versus 567Sing: the parameters behind the verdict, then further details
ParameterCashflow Engineers567Sing
PriceFreeFree
Rating5.0 (14 ratings) — better
Positive reviews100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 5 monthsEvery 6 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better26.0
Further details — not scored
Size88 MB91 MB
Age rating4+4+
DeveloperMaestro Marketing LLCCurt Hansen

In-app purchases

None

Cashflow Engineers

No in-app purchases

18 purchases

567Sing

Subscriptions8
  • Exercise Challenge$4.991 Month
  • 567Sing Studio Monthly$9.991 Month
  • Daily Vocal Workouts$14.991 Month
Show 5 more
  • Step Up & Sing - Monthly$34.991 Month
  • 567Sing Studio Yearly$79.991 Year
  • 567Sing Yearly Member$349.991 Year
  • 567Sing Studio$779.991 Year
  • Step Up & Sing - Yearly$999.991 Year
One-time10
  • Step Up & Sing Course$27.00
  • 567Sing Membership$34.99
  • Dance Voice Quick Start$37.00
Show 7 more
  • Step Up & Sing$37.00
  • Daily Vocal Workout$99.99
  • 567Sing Teen Collective$269.99
  • Audition Accelerator$299.00
  • Dance With Your Voice$999.00
  • 567Sing Mentorship$1000.00
  • ChoreoVox Studio$1000.00

Questions

Is Cashflow Engineers free?
Cashflow Engineers is free to download, with no in-app purchases.
Is 567Sing free?
567Sing is free to download, with in-app purchases available.
Do Cashflow Engineers or 567Sing have ads?
Both Cashflow Engineers and 567Sing show ads.
Which is updated more often, Cashflow Engineers or 567Sing?
Cashflow Engineers ships an update every 5 months, and 567Sing every 6 weeks. Most recently, Cashflow Engineers was updated on September 8, 2026 and 567Sing on September 13, 2026.

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