The first of the month is an oddly confident date. It expects the money to be there, the payment to go through and everyone’s working life to have arranged itself accordingly. A paycheck arriving a few days later receives no special consideration from the calendar. The calendar has a rather good opinion of itself.
Shragie Lichtenstein has built a company around this disagreement. Flex, which he co-founded with YeTong Shao in 2019, lets eligible renters split their rent payments while their property receives the full payment when it is due. The apartment remains the same. The amount owed under the lease remains the same. The sequence in which money moves becomes negotiable.
That is a modest-sounding proposition for a business with banking relationships, credit assessments and property-software integrations behind it. It also provides a useful way into Lichtenstein’s story. His career runs from investment work to entrepreneurship, then into the machinery of an expense that people must manage month after month. The problem he chose was already sitting in plain sight.
A calendar with no manners
The difficulty Flex addresses is easy to picture without inventing a distressed customer or a miraculous rescue. Rent is due at the beginning of a month. Income arrives on a different schedule. Someone can have earnings coming and still lack the full amount at the moment a payment is required. Timing belongs in the arithmetic.
Flex’s model puts a credit arrangement between those dates. A qualified renter pays a portion upfront; financing covers the remaining portion of the rent payment. Later, the renter repays the amount financed. The property gets the payment it expects, and the renter has a different repayment schedule. Eligibility and repayment obligations remain part of the transaction.
For Lichtenstein, this creates a business with two audiences. The person paying wants flexibility. The person collecting wants predictability. The proposition has to accommodate both. A product that makes sense on a phone also has to make sense to the people keeping the property’s accounts.
The renter’s first payment and financing cover the bill.
The financed portion is repaid on the agreed schedule.
Before the rent app, the investment desk
Lichtenstein’s public education record lists Yeshiva University from 2012 to 2015, with summa cum laude honors. In May 2015, he received a Finance Award and the Ryan Khaldar Award for Outstanding Character and Academic Excellence. They are specific, fairly formal entries in a career that would eventually concern itself with a very practical household calculation.
His professional background includes investments at Point72. He also lists investor roles at Lightstone and Torch Venture Capital. Before founding Flex, he co-founded Boundless Reality. Flex therefore arrived after experience on both sides of the founder-investor relationship: examining businesses and working on one of his own.
YeTong Shao’s background also includes Boundless Reality and Torch Venture Capital. Their histories overlap before the company for which they are now known. By 2019, the two were co-founders of Flex, based in New York. Lichtenstein became its chief executive. The shared undertaking concerned rent, a subject unlikely to require a lengthy explanation at a dinner table.
The meetings before the money
One of the revealing episodes in Flex’s early development concerns an investor’s introductions. Camber Creek connected Lichtenstein with members of its limited-partner network in multifamily housing. Those conversations helped establish which kinds of buildings would find Flex attractive. The product idea acquired a more definite place to operate.
“Camber Creek helped me refine the idea for the product.”Shragie Lichtenstein
Lichtenstein described that work as evidence gathered before Camber Creek invested. He credited the introductions with shortening a process that could otherwise have required years of trial and error. The interesting part of this anecdote is its plainness: people who understood apartment buildings helped a founder understand where his proposed service fitted.
His account of Restive’s contribution is similarly practical. He credits the firm with helping Flex find product-market fit, establish its legal structure, work with its bank partner and understand the payments and banking systems. Those are the details that disappear from a clean app interface. They still have to be worked out.
Read together, the two accounts suggest how much of Flex’s development happened through knowledge and relationships. Lichtenstein’s own descriptions give credit to other people’s experience. A financing product needs a usable structure, a way to reach customers and a reliable route for money. The good idea has several appointments to keep.
Getting inside the rent portal
By 2024, that route increasingly passed through property-management software. In June, Flex announced a partnership with Yardi to put its payment option into RentCafe. Residents could discover and sign up for the service inside the portal. For onsite teams, the announced integration required no additional work or cost.
In August came a strategic partnership with RealPage, which named Flex its preferred technology provider for flexible rent payments. The arrangement expanded an existing integration and made the option available through LOFT, RealPage’s resident portal and app. The distribution strategy was becoming visible: put Flex near the rent bill itself.
Entrata followed in September. Its integration into ResidentPortal used an API, a connection between software systems. The technical language is less interesting than the everyday consequence. A resident could encounter a payment choice in an existing routine; property teams could retain the single rent payment they expected at the beginning of the month.
In October 2025, Flex announced an AppFolio partnership. The payment option would sit within online tenant portals and connect to the property ledger. That last detail matters. Splitting a renter’s repayment should still leave the property with understandable accounts. The business has to survive contact with bookkeeping.
- Yardi / RentCafe
- RealPage / LOFT
- Entrata / ResidentPortal
- AppFolio / tenant portal
- Apartment List / apartment search
Before the keys change hands
The next turn moved Flex earlier in the renter’s journey. In August 2026, Apartment List announced that it would embed the Flex offering in its apartment listings. Payment flexibility could become something a renter considered while looking for a home, before signing a lease and receiving the first bill.
Lichtenstein described the change in terms of the decision itself: “renters can factor it into the decision.” Earlier integrations had concentrated on an existing tenant’s payments. This one introduced the option during the search. It gave the service a place alongside the questions people ask about a potential apartment.
The distinction is meaningful without pretending that a payment schedule changes the price of housing. The rent still needs to be paid. But the availability of a financing option can enter the conversation before a commitment is made. Lichtenstein’s business was reaching beyond the moment when someone opens a payment portal.
The company reported more than 3.2 million customers to date and more than $40 billion in processed payments in that announcement. Those are cumulative measures of activity. They describe how much has passed through the business, rather than its revenue or the number of people using it in any particular month.
The same network, another purpose
July 2026 brought another use for the infrastructure. Flex for Good, an independent nonprofit supported by Flex, reported more than $1 million in direct rental assistance delivered to more than 800 renters. Its partners include Hope+Door, which provides emergency rent-relief grants directly to landlords.
Flex supplies technology and payment infrastructure that help with identifying need, verifying eligibility and distributing assistance. In a pilot with Hope+Door, the nonprofit reported reducing the time to process applications and distribute funds from ten days to 72 hours. It was also preparing an evaluation of eviction outcomes.
“Flex’s network was built to move rent.”Shragie Lichtenstein, July 2026
Lichtenstein’s explanation connected the assistance effort to capabilities already built for the commercial service. He wanted nonprofit, philanthropic and government partners to be able to use that infrastructure. The ambition was to reach households earlier. The planned evaluation matters because delivering assistance and demonstrating its longer-term effect are different jobs.
A proposed bank, and an old question
On July 24, 2026, Flex announced applications to the Federal Deposit Insurance Corporation and Utah’s Department of Financial Institutions to charter Flex Bank. The proposed industrial bank would issue core credit products directly and provide access to insured deposit accounts. It would operate nationally through digital channels.
Flex’s chief banking officer, Jeff Berkson, was proposed as the bank’s president and chief executive. The announcement was an application, with the institution described as proposed. Flex continued to identify itself as a financial technology company whose financial services were provided through bank partners. That distinction is necessary to understand the next chapter accurately.
Lichtenstein described the ambition as “a permanent, regulated foundation.” Seven years after co-founding Flex, he was discussing the institutional structure underneath the service. The early work on banking relationships and legal arrangements had grown into a proposal to own more of that machinery.
The thread connecting these episodes is remarkably ordinary: getting money to the right place at a workable time. Property portals, apartment searches, assistance programs and a proposed bank each approach a different point in that process. Lichtenstein’s career has taken him into increasingly elaborate systems in pursuit of that fairly short sentence.
The first of the month will continue to arrive with its usual confidence. Flex’s proposition is that the people meeting it can have another schedule. For a founder with an investment background, it is an unusually domestic place to put financial infrastructure to work: the recurring bill, the familiar screen, the date everyone already knows.