"To save money, you first need money": a Frenchman used TikTok screen recordings and a hard paywall to push a budgeting app into France's top five Finance grossing charts

Kakeibo is a manual budgeting app built by a French indie developer. It doesn't connect to banks and looks like Finary. It launched in July, and by early November it had reached #4 and #5 in the French App Store's Finance top grossing chart. None of its features are unique. It got two things right: the app was designed from the start to be easy to film, and its paywall copies the hard wall Cal AI uses. The paid acquisition money went to a few French "saving money" accounts.

A 1.04M-view video

On Oct 2026, 28, a TikTok account called @cam.bonplan posted a 58-second video captioned "Elle a eu pitié de mes finances je pense" ("I think she took pity on my finances"). The account had 2,400 followers and 23 posts, and usually shares money-saving tips. The video is a screen recording of a budgeting app: she fills in her monthly budget item by item (rent, groceries, transport, shopping), with 9 realistic bank cards lined up below.

By Nov 6 the video had 1.04M views and 109k likes (TikTok, 11-06). The top comment was a joke: "déjà pour économiser il faut de l'argent" ("to save money, you first need money"), with 21k likes. The second-most-liked comment, with 5,018 likes, was "comment t'as autant de cartes" (how do you have so many cards). Scrolling down, it's all the same: "9 bank cards?????", "your groceries budget feeds my family of three adults and a kid", "does it work in Switzerland?", "what is this app?" The author replied in the comments: "C'est Kakeibo".

Two days later, on Oct 30, Kakeibo hit #8 on France's App Store overall free chart and #1 in free Finance (France App Store chart, 10-30).

What it is

A fully French personal finance app. It logs everyday spending, shows a monthly budget calendar, sets savings goals, and combines checking, savings, investment, and crypto accounts into one "total assets" curve. It also has a travel mode, a mascot named Marie, and a streak flame for consecutive days of logging. The most camera-friendly feature is the card faces: hundreds of banks from France, French-speaking Africa, the Philippines, and elsewhere can be added in their real look.

It doesn't connect to banks. Every number is entered by hand. The store page says "no ads, no tracking, your data is yours." The name borrows from Japan's "kakeibo" household-ledger method, which French TikTok has talked about for years, but the app doesn't teach the Japanese four-category reflection system. It just borrows the name.

The developer, Cédric Muny Chantha Samboun, has only this one app. Early comments on his videos already gave it away: "l'application faite avec Claude" (the app made with Claude).

Why now: he filmed it himself first, then paid others to film once the format was proven

July, the founder films it himself. His TikTok account @cdric9688 had only 260 followers. On Jul 20 and 21 he posted two 22-second screen recordings back to back, both showing him filling in "my monthly budget" in the app. They got 240k and 450k views (TikTok, 11-06).

The two videos were deliberately designed in two ways. First, the numbers were unrealistic: 100 euros for groceries, 10 euros for eating out, 100 euros for fuel. The comments immediately argued, "1450€ and that's 'decent'?" with 1,445 likes, "10 euros eating out, tell me where" with 979 likes, "Macron's France with 100 euros of groceries?" with 213 likes. Second, the video never named the app, so the comments filled with "what's the app called?" and "Cédric, just give us the damn app." In the end a helpful commenter pasted getkakeibo.app for him.

This "fill in a budget that makes people cringe, no names" format was validated before launch. Later, 8, September he kept posting, views dropped to 10-20K, then to around 1,000. He didn't stop. He built a dedicated "content mode" in the app just for screen recording. A comment in the website's source code from his Sep 20 reads: this is how I'll shoot TikTok.

October, he switches to other people's accounts. Another Oct 30 comment in the website code says creators recruited from UGC platforms like SideShift and viral.app got 6 "creator codes" that, once entered, upgrade the account to lifetime membership. That way they can record without hitting the paywall. The entry point is hidden, and the comment says this doesn't violate Apple's review rules.

They recruited "bon plan" (good deal) style accounts with two to three thousand followers, whose audience is students and people always short on money:

• @elobonplan (2,000 followers, also promotes other money apps): Oct 16, "my bank advisor just showed me this," 37k views. The creator replied in the comments: "C'est Kakeibo !!! The best budgeting app."
• @cam.bonplan: the opening video, Oct 28, 1.04M views; another on Oct 30, 92k.

The timing lines up exactly: after the 10-28 video took off, 10-30 reached #8,11-01 on the overall free chart, and in one day it got 9 ratings, its biggest single day since launch. On Nov 2 an English newsletter about mobile growth wrote it up as a case study: "How two UGC creators pushed a new finance app to #5 in France."

No obvious paid ads in the store. The website code has no Meta or TikTok ad-tracking pixels or attribution SDKs (inference: it mostly didn't rely on paid ads).

Where the money comes from: a wall with no close button

Free to download. On opening, there are 3 screens introducing the "free trial," then a hard paywall. You can't get in without paying. A Sep 25 comment in the website code reads, verbatim, "Pas de croix : c'est un hard paywall" (no X button: it's a hard paywall).

Pricing is laid out like this:

A countdown sits on the paywall, and it never actually ends. The founder's code comment is blunt about it: the promo is bait, so keep it showing. Day 3 and day 7 bring the discount back. The whole flow is almost a copy of Cal AI. The paywall also says "60 000+ users, 4.8/5". A code comment says he changed that number in Nov 4; it used to read "10 000+". It doesn't match the public numbers: 71 ratings worldwide on the App Store, about 2,500 installs on Google Play (App Store, Google Play, 11-06). Treat it as marketing copy.

The real scale is small. An Oct 30 code comment mentions "68 accounts with real purchases". At the welcome price for the annual plan, cumulative revenue at that point was roughly in the €1–2K range (est.). The bar for France's finance top-grossing chart is that low: 11-06 only Finary, Bankin', TradingView and Investing.com ranked above it, and Kraken, Les Echos, Linxo and YNAB sat below (App Store France finance Top Grossing, 11-06). Annual plans book revenue up front, so a dozen extra sales a day is enough to reach the top five in this category.

The cost shows too. Recent one-star reviews cluster on two complaints: "Payant pour utiliser……appli totalement PAYANTE" (you have to pay to use it, it's entirely paid) and "Bug incessant" (constant bugs, and the app won't work after updates). Both were written in Oct 31 and Nov 1, right in the days of peak traffic. How long users stick around isn't visible from outside.

Who it's competing with

There are also rivals that aren't on the charts: the budgeting features built into bank apps (commenters say "Bourso can already do this"), and a sheet of paper or an Excel file (one review says "paper and a pen work just as well").

This niche is crowded, and Kakeibo has no feature that's exclusive to it. It wins on three things: fully in French, a design young people like, and a set of assets built for short video. The card designs, the mascot and an absurdly large budget figure are the things that grab attention on screen. I haven't seen anyone copy its approach yet (the same-named apps all came first, so this isn't copycatting).

If it were you

B, worth a try. The playbook is clear and portable, but the niche is crowded and the money is still small. Kakeibo shows that a budgeting app one person built with AI can reach the top five in a country's finance top-grossing chart without relying on features or paid ads. It relies on three things: an app designed to be filmed, UGC from niche small accounts, and a hard paywall. None of that is something a follower can't access. The weak spots: it has only dozens or hundreds of real paying users, and the finance chart's low bar inflates its rank. Hard-paywall complaints are already in, and growth circles have already written it up.

Who it suits: one or two people who can build a polished iOS interface, with a native speaker or partner who can cover a non-English market (German, Italian, Spanish, Brazilian Portuguese and Polish all work), and who is willing to find local small money-saving and personal finance accounts and negotiate UGC with them one by one.

Who it doesn't suit: people who want to win on "better features", since Bankin', Finary and the banks themselves already own bank connection and automatic tracking; people who can't handle bad reviews, since a hard paywall will draw complaints; and people who only want the US English market, where budgeting apps and this UGC playbook are already saturated.

How to do it: pick a language market and first check how many downloads it takes to reach #5 on that country's App Store finance Top Grossing chart (look at who sits above and below you) to gauge the bar. Build the product to be easy to film: a monthly budget page that reads at a glance, a shareable element (local bank cards, a local mascot, local spending categories), and a hidden creator code that gives creators full access to the account. Monetize with a 3-screen trial plus a hard paywall, lead with the annual plan, and anchor against a struck-through price. Fix what it gets wrong too: fewer bugs, a little genuinely usable free tier before the wall to answer the "everything costs money" complaint.

How to get users: start by filming yourself using its format: fill in a deliberately absurd budget, don't name the app, and let the comments argue and ask. When a video's comments start filling with people asking for the app name, the format works in that country. Then go to platforms like SideShift or viral.app, or DM directly, to find local money-saving, bon plan and student finance accounts with a few thousand followers, pay per post, and spread across 5 to 10 of them. One viral post is enough to hit the chart.

When to move: the sooner the better, ideally before 2027 January. New Year is peak demand for budgeting apps ("new year savings plan"), and this playbook is already circulating in growth circles, so within half a year people in every language market will be doing it.

Signs you've misread it: ① If Kakeibo drops out of France's finance top-grossing top 2027 early in 20 and its ratings stay at a hundred or two, the effect was short-lived, coming from a couple of viral videos; UGC can push a chart rank but can't hold users, so the playbook won't keep making money. ② If you post five or six screen recordings in a new market and nobody asks for the app name in the comments, the format doesn't work in that country: change the format or the market.