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SaaS for professional resellers on secondhand platforms (Vinted / eBay / Depop, mainly Europe): inventory and bookkeeping, deal alerts, bulk listing. €30–300/month
Open Worth borrowing · a playbook validated elsewhere that can be transplanted + a crowded counterexample First spotted 2026-10-31 · last updated 2026-11-08
- Status
- Open (consumer “photo-to-price / one-tap listing” apps are already crowded, see evidence)
- Why now, and how long the window lasts
- Vinted grew big in Europe and created a crowd of people who resell as a side hustle; subscription tools are moving from the €4 consumer tier up to the €80–300 “professional seller” tier, where revenue per user is 3–10x higher. This isn't a new window; it's a validated playbook with competition not yet saturated. Windows are measured in quarters.
- Confidence
- Medium. Revenue is verified, but only for products with public revenue, so the sample is small. Would be overturned if: Vinted launches official pro-seller tools or shuts out third-party tools; ControlResell and the anonymous product both see revenue decline two months in a row.
Evidence
Grouped by store. Each group starts with the charts that can be graphed (real curves, data dates below the chart), then the scanner's original notes and source links.
Indie product revenue (TrustMRR)4 evidence · 4 products with curves
ControlResell controlresell.com
TrustMRR · 30-day revenue $25,035 (+2%) · MRR $21,667 · 442 subscriptions
2025-11 → 2026-11 (13 pts). Light bars = current month, not yet complete
Data 2026-09-29 → 2026-11-06 (39 days, 39 observations). Single-day swings are big, so look at the trend in the monthly breakdown above.
TrustMRR · 30-day revenue $12,407 (-10%) · MRR $14,052 · 97 subscriptions
2026-08 → 2026-11 (4 pts). Light bars = current month, not yet complete
Data 2026-09-29 → 2026-11-06 (39 days, 39 observations). Single-day swings are big, so look at the trend in the monthly breakdown above.
Flipify flipifyapp.com
TrustMRR · 30-day revenue $18,226 (-0%) · MRR $19,240 · 698 subscriptions
2025-11 → 2026-11 (13 pts). Light bars = current month, not yet complete
Data 2026-09-29 → 2026-11-06 (39 days, 39 observations). Single-day swings are big, so look at the trend in the monthly breakdown above.
TrustMRR · 30-day revenue $3,793 (+15%) · MRR $3,532 · 398 subscriptions
2025-11 → 2026-11 (13 pts). Light bars = current month, not yet complete
Data 2026-09-29 → 2026-11-06 (39 days, 39 observations). Single-day swings are big, so look at the trend in the monthly breakdown above.
- indie (revenue verified by payment platform, as of 10-30):
- ControlResell (controlresell.com, FR, est. 2025-01): bookkeeping and inventory for Vinted / Shopify sellers, €29.99 / 59.99 / 119.99 per month; 30-day revenue $24,977, MRR $21,806,450, 2025-11 subscriptions; monthly revenue went from $3,884 in 2026-10 to $24,651,9 in October, roughly flat.
- A French anonymous product (hidden-business-86,2026-08-15 launched): real-time deal alerts for resale fashion and collectibles sellers, €79 / 129 / 299 per month, August $11,501, September $12,312, October $11,671, MRR $14,400,98 from subscriptions. Channels are Instagram, TikTok, YouTube, Discord and affiliate promotion.
- Flipify (flipifyapp.com): finds cheap items on FB Marketplace and eBay, $5–10 per month; $18,772/30 a day, 697 subscriptions, climbing steadily from $2025-11 to $3,275.
- Counterexample: Preloved AI, a consumer app for iOS (GB) that generates Vinted listings from one photo, does only $3,866/30 a day, and its monthly revenue has stayed around $2026–2k for 4 year(s); AutoLister (Chrome extension, €3.99 per month) $448.
- indie (France, 11-01 core): an anonymous French deal-alert product (hidden-business-86, €79 / 129 / 299 per month), $30 a day for 13,139 days, 100 subscriptions, listed for sale at €399,000 (TrustMRR).
- indie (Netherlands, 11-01 core): InstantAlert (alerts for new Vinted listings, €4.99–27.99 per month): May $209 → October $1,174,30 a day $1,153 (+44%), 113 subscriptions; low-priced tiers can grow too, but the volume is an order of magnitude smaller than the €79 tier.
- indie (US, 11-01 core): FlipScan (iOS, scan to see resale value, $14.99 per month / $49.99 per year), $30 a day for 800 days (+76%), 34 subscriptions, listed for sale at $8,000; Preloved AI (startup-317809acec3d) $3,950 (+32%).
App Store4 evidence items · 6 products with curves
ThriftAI: Profit Identifier smallstack ApS
App Store · launched 2025-06-05 · US store rating 20,811 · charted in 11-08 of 50 stores
US storeAustraliaCanada
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Apple doesn't publish download counts; rating growth is a proxy for downloads.
Vendly Mahmud Modibbo
App Store · launched 2026-04-02 · Nigeria rating 0 · charted in 11-06 of 1 stores
Number of ratings 0
Data day 2026-11-06, only 1 days so far. Apple doesn't give download counts, so rating growth is the proxy
Vendly: Sell Secondhand Fast JULES YANIS BOURGEOIS
App Store · debuted 2026-07-23 · France ratings 218 · 11-08 charted in 27 stores
FranceSpainGermany
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Apple doesn't publish download counts; rating growth is a proxy for downloads.
Vinted Finder: Style Scanner Really Nice
App Store · debuted 2026-07-16 · Mexico ratings 44 · 11-08 charted in 63 stores
Data 2026-11-02 → 2026-11-04 (3 days, 3 observations). Lower rank is higher; gaps mean it wasn't charted that day
Data 2026-10-31 → 2026-11-04 (5 days, 5 observations)
Vintly: Sell Clothes Faster Fahd Barro
App Store · launched 2026-09-17 · US store rating 0 · charted in 11-08 of 30 stores
SpainGermanyItaly
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day
Number of ratings 0
Data day 2026-11-01, only 1 days so far. Apple doesn't give download counts, so rating growth is the proxy
Conscious - Spend Ethically. Farran Ventures LLC
App Store · launched 2026-04-30 · US store rating 781 · charted in 11-08 of 61 stores
MU #107
Data day 2026-10-31, only 1 days so far. Lower rank is higher; gaps are days it wasn't charted
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Best rank across each day's category charts
- App Store (all stores, 2026-10-31): at least 35 valuation and listing apps with thrift / resale / Vinted / revente in the name. The leader ThriftAI: Profit Identifier (6746565278, smallstack ApS, debuted 2025-06) has 20,752 ratings and charted Top Grossing in 47 stores. Since 2026 there's also a long line of newcomers: Vinted Finder, Vendly, Vintly, VintSnap, Thrifted, Flip, Pocket Pricer, BrocScan (debuted 10-21), and more.
- App Store (fr / be / pl, 11-02): all 9 new "photo → AI writes title and description, prices it → post to Vinted" apps are solo-developer built. Vendly (debuted 6789630023,2026-07-23) is #4 Top Grossing in Shopping in fr (#6 at time of report), #4 in be, #17 in nl, #17 in pt, with 210 combined ratings across stores (10-28 is 148). Vinted Finder (6786695195) has charted in 67 stores, #12 Top Grossing in the br / mx categories, and 280 ratings across stores. Vintly (6803984030,2026-09-17) is #1 Top Grossing in the pl category and #9 in at, with 31 ratings across stores. Also Scanna AI, Flip, Loot AI, VintSnap, Vondi, ResalePal, Legit Check ×2.
- App Store (all stores, 11-02): adjacent category Conscious - Spend Ethically (6762069204,2026-04-30, scan a product to see whether its brand is worth boycotting) has charted in 59 stores, #3 Top Grossing in Shopping in pl, #6 in es / nl, #8 in gb, #17 in us, with 1,353 ratings across stores. It's driven by political sentiment and can't be copied, but it shows that "scan it and tell me" in Shopping does get paid.
- App Store (jp, reported figures, 11-01): there are no comparable new apps in Japan's Mercari ecosystem (フリマハンター has 8 ratings), and none in China's Xianyu ecosystem either.
Google Play2 evidence items · 2 products with curves
ThriftAI: Profit Identifier smallstack ApS
Google Play · Launched 2025-05-30 · 11-07 installs 296,061
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations)
Thrift & Profit Finder - Gemli 326 LAB - FZCO
Google Play · Launched 2025-11-02 · 11-07 installs 297,204
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations)
- GP: the matching leading apps can't be found in the store search. Either they aren't on GP or they haven't charted, and I can't tell which.
- GP (11-02): none of the 9 Vinted helpers above are on Play. Vinted itself (fr.vinted) has 123,304,254 installs. The only similar Play apps are the US-oriented ThriftAI (com.fulcra.thriftai) with 293,503 installs and #6 Top Grossing in us Shopping, and Gemli (com.labs326.gemli) with 295,851. The Vinted seller-helper slot on Android is empty.
Already doing it
ControlResell (France, bookkeeping and inventory), an anonymous French product (deal alerts), Flipify (US, deal alerts), DropPop (automation, MRR $13,470). I found no evidence of equivalents on the local German, Spanish, Italian, or Polish platforms (Kleinanzeigen, Wallapop, Subito, OLX). Backfill (11-02): InstantAlert (Netherlands, Vinted alerts), FlipScan (US, scans codes to estimate resale price, live), Vendly, Vinted Finder, Vintly, Scanna AI, Flip, Loot AI, VintSnap, Vondi, ResalePal, Legit Check (App Store, all solo, all iOS-only); on Play, ThriftAI and Gemli (US-oriented).
The hardest step
Platform data is in hand. Vinted has no public API, so deal alerts rely on scraping, with account-ban and compliance risk. Customer acquisition means getting into seller communities (Discord, TikTok).
Who it's for
A 1–2 person team that can build scrapers and backends, B2B small subscriptions, and European local-language markets (France, Germany, Italy, Spain, Poland).
Should every product builder know this?
No, it's too vertical. But the contrast is worth knowing: in the same audience, consumer apps are crowded while tool SaaS makes money.
Change log
2026-11-08
ControlResell $25,035(+1.6%); anonymous deal-alert reminder $12,407(−9.9%, MRR $14,052). Unchanged.
2026-11-07
ControlResell $24,895 (−0.7%); anonymous deal alerts $12,554 (−6.9%, subscriptions 95→96, stabilizing). Xianyu AI monitoring +703 today and still rising. No change.
2026-11-06
ControlResell $25,220 (+2.2%, recovering); anonymous deal alerts $12,466 (−6.9%, MRR $14,509→$13,937, subscriptions 98→95, negative two times in a row, subscribers are churning). If it keeps falling next week, I'll log it as "retention problem in high-priced deal alerts."
2026-11-05
New evidence (an older repo on the watchlist turned red): Usagi-org/ai-goofish-monitor (real-time multi-task monitoring and smart filtering of Xianyu using Playwright + AI, with a backend UI), created 477 days ago, 17,122 stars, +7 in 1,835 days and +817 today. The same "deal alert" demand holds on Chinese second-hand platforms too, but here it's free, open-source, self-hosted, and a different kind of supply from the French anonymous product at €79–299/month. indie: ControlResell $23,765 (−4%), anonymous deal alerts $12,454 (−6%, previously +1.6%, first negative reading). Status unchanged; next week I'll check whether the anonymous one keeps falling.
2026-11-04
ControlResell $24,480, anonymous deal alerts $12,886. No change. Also Meta: Depop's own Page ads went 699→762 (+9%), so the platform itself is buying from both buyers and sellers.
2026-11-03
ControlResell $24,214 (−1.9%), anonymous deal alerts $12,885 (+1.9%, MRR $14,644). No change.
2026-11-02
Backfill (from the revenue library "recently started earning" §1.2, App Store new opportunities §1.6, Google Play new opportunities §4.1, Stringers §3.3): added 9 Vinted AI listing helpers on the App Store and the open slot on Play. Vendly fr Shopping Top Grossing #6 → #4, ratings 194 → 210; the anonymous French deal-alert product is listed at €399k. All 9 helpers are iOS-only, while Vinted Android has 123M installs. That's the most concrete gap in this entry; status unchanged.
2026-11-02
indie: ControlResell $23,709 (−4.2%, two small dips in a row, still within normal fluctuation); anonymous deal alerts $13,139 (+5.5%, 100 subscriptions); Flipify $18,096. New library adds supply-side evidence: the Chrome Web Store already has many Vinted / resale-tool extensions. Vendoo 70k users, PosherVA 20k, Crosslist 20k, Dotb (Vinted automation, paid) 10k, Bleam (France, 2025-10 listings, paid) 7,000, Vinteer (Vinted plus Leboncoin CRM and bookkeeping, 2025-12 listings) 1,000. The French segment is getting crowded; I couldn't find extensions for the German, Italian, or Polish local platforms on the Chrome Web Store. Status unchanged, competition description updated.
2026-11-01
indie (as of 10-31): ControlResell $24,243 (−0.3%, flat); anonymous French deal alerts $13,033 (+4.8%, MRR $14,589,99, subscriptions); Flipify $18,419; Preloved AI $3,966. No change.
2026-10-31
First recorded.
Original: Scanner opportunity library #003 (updated daily, 06:00); this page was generated on the 2026-11-08 edition.