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Mobile apps

Kept

Kept helps users remember their essentials and review their journeys when belongings go missing.

Listed Nov 1, 2026

Asking price
$3,200
Annual revenue
$0
Annual profit
$0
Age
5 months

About this startup

Kept is a pre-launch mobile application designed to help people keep track of their everyday essentials and remember their journeys.

Users can organize belongings such as keys, wallets, and headphones, create item checklists, set reminders, and review their journey history and recorded locations when something goes missing.

Kept has been developed using React Native, Expo, TypeScript, FastAPI, and MongoDB. Core functionality has been implemented, while automatic movement detection and some background tracking features are still undergoing real-device testing.

The product has two planned revenue streams:

1. **Kept+** — A premium subscription offering advanced features, extended journey history, and additional personalization.

2. **Kept Nearby** — A location-relevant advertising model that would allow local businesses to promote their services through clearly labeled sponsored placements.

Both monetization models are planned and have not yet generated revenue.

Kept is currently pre-revenue and under development. The sale offers an opportunity to acquire the existing project and continue its development, launch, and commercialization.

What is included

  • Frontend and backend source code
  • React Native / Expo mobile application
  • FastAPI backend and MongoDB integration
  • Owned branding and design assets
  • Existing technical documentation
  • Automated tests
  • Deployment and configuration instructions
  • Transferable intellectual property rights owned by the seller

Why it is for sale

I have developed Kept into a pre-launch mobile application, and I'm looking for a buyer who can complete the remaining testing, bring it to market, and grow it further. I believe the project has potential in both premium subscriptions and local business advertising.

Questions about Kept

Short answers built from the details the seller entered. Figures come from the seller, so ask for proof before you pay.

What is Kept?

Kept is a mobile app for sale on Startupzel. Kept helps users remember their essentials and review their journeys when belongings go missing. It has been running for 5 months. The seller is asking $3,200.

What does Kept do?

Kept is a pre-launch mobile application designed to help people keep track of their everyday essentials and remember their journeys. It is listed in the Mobile apps category.

How much does Kept cost?

The seller is asking $3,200 for Kept. The asking price is a starting point: you agree the final terms with the seller, and Startupzel takes no commission on the sale.

How much revenue does Kept make?

The seller reports no revenue for Kept over the last 12 months. These figures come from the seller, so ask to see them at the source before you pay.

Is Kept profitable?

The seller does not report a profit for Kept over the last 12 months. Profit is what is left after costs, so ask the seller how they count it and ask for proof.

Why should I buy Kept?

Here is what the listing offers, based on what the seller reports.

  • It has a track record: it has been running for 5 months.
  • The sale includes 8 things, such as frontend and backend source code.

Whether it is right for you depends on how much time you can give it, so ask the seller for proof of the numbers before you pay.

Why is Kept for sale?

The seller gives this reason: “I have developed Kept into a pre-launch mobile application, and I'm looking for a buyer who can complete the remaining testing, bring it to market, and grow it further. I believe the project has potential in both premium subscriptions and local business advertising.” Startupzel does not verify reasons for selling, so ask the seller to explain in your first message.

What is included in the sale of Kept?

The sale of Kept includes 8 things, as listed by the seller.

  • Frontend and backend source code
  • React Native / Expo mobile application
  • FastAPI backend and MongoDB integration
  • Owned branding and design assets
  • Existing technical documentation
  • Automated tests
  • Deployment and configuration instructions
  • Transferable intellectual property rights owned by the seller

Ask the seller to confirm in writing exactly what will be handed over.

What is Kept built with?

Kept is built with React Native, Expo, TypeScript, FastAPI and MongoDB Atlas. Check that you, or someone you can hire, can work with this stack.

What should I check before buying Kept?

Start with proof of the numbers: ask for revenue exports from the payment provider, and confirm who owns the domain, code and accounts. Then agree on the handover in writing. For a mobile app, buyers also look at the points below.

  • Store accounts, and who owns the developer account
  • How revenue splits between subscriptions, one-off purchases and ads
  • Whether the app still builds with current tools
  • What the reviews say, and how the founder answers them

The buyer’s checklist covers more.

How do I buy Kept?

Create a free Startupzel account, message the seller from this page and agree on the price and the handover directly with them. Startupzel does not hold the money or move the project, so write the steps down before anything changes hands.

Does Startupzel charge a fee or commission on Kept?

No. Listing is free and Startupzel takes no commission when Kept sells, so the full sale price goes to the seller. See how pricing works.

Last updated Nov 1, 2026

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