Mikey No Code interviews a subscriber about her workflow, keeps 4 features and parks 5, feeds Base44 one complete prompt, then fixes real-use problems with her screenshotted feedback.
Build a journal app with login and Stripe in Base44
Mikey builds Lumen, a liquid-glass journal app, in six Gemini 4 Argon prompts on Base44: tags and search, AI reflection, sign-up, Stripe premium and a final polish.
Mikey No Code · YouTube · published Oct 19, 2026 · Software & DevOps
▶ Watch on YouTubePrompt
Create [Lumen], a journal app in Apple iOS 26 liquid glass design: soft gradient background, frosted glass cards, glass navigation, a home screen with a daily entry card, an entry list by date, and an editor with a title, text and five moods. Save entries in the database. Leave tags, search, AI, accounts and payments for later.
Visual breakdown
Mikey builds a complete journal app called Lumen in Base44 with six prompts to Gemini 4 Argon, adding features in layers instead of one big prompt. He tests the published app as a brand-new user, from sign-up through the Stripe premium upgrade.
The problem: Most AI app videos stop after the first impressive prompt. The real test is whether the model stays coherent as the 10th decision has to agree with the first nine.
Six prompts from idea to paid app
- Pick the modelChoose Gemini 4 Argon manually in Base44's model selector (Builder plan or higher)
- 1. App shellLiquid glass UI, home, entry list, editor with five moods, saved in the database
- 2. OrganizationTags, favorites, search, filters, calendar and a writing streak card
- 3. AI featuresReflect button with follow-up question, daily writing prompt, assistant chat bubble
- 4. AccountsSign up, login, private entries per user, profile page; then publish
- 5. Premium4-digit PIN entry locking, insights page and a Stripe test-mode subscription
- 6. PolishConsistent glass styling, empty states, loading indicators, mobile layout
- Tested live appA new user signs up, upgrades with a Stripe test card and checks mobile
InputsSetup / manualPrompt to Gemini 4 ArgonResult
How he keeps it coherent
- Set the design in prompt 1, so every later feature follows it.
- Each prompt says what to leave for later.
- Each prompt repeats: keep the existing liquid glass design.
- Test every layer before adding the next.
By the numbers
6prompts in total
5moods per entry
4-digitPIN for locked entries
24:08video length
Build your own layered app
The same approach can work for other app ideas: start with the basics, then add features in small prompts.
- Open Base44, click the model button under the prompt box and select Gemini 4 Argon.
- Prompt 1: describe the design, main screens and data to save, and list what to leave for later.
- Prompt 2 and 3: add organization features, then Base44's built-in AI (no API key needed).
- Prompt 4: ask for sign-up, login and per-user private data, then click Publish.
- Prompt 5: ask for premium features and connect Stripe in test mode; payments only work in the published app.
- Prompt 6: ask for a design-wide polish pass, republish, and test as a brand-new user, including mobile size.
Test the published version, not just the preview, since a feature can behave differently once live.
Lessons from the build
- The first prompt is easy; the test is whether later prompts stay consistent with earlier ones.
- Base44 has authentication, AI integration and Stripe built in, so you don't build them from scratch.
- Stripe checkout doesn't work inside the Base44 preview; publish first.
- Use Stripe test mode and a test card so no real money is charged.
- Test the whole app end to end as a new user before wrapping up.
Jump to the part you need
0:00Intro: multi-prompt real app test2:12Select Gemini 4 Argon in Base443:33Prompt 1: app shell and liquid glass UI7:09Prompt 2: organization tools10:03Prompt 3: AI reflection and assistant chat12:56Prompt 4: authentication and publishing15:10Prompt 5: PIN locking and Stripe18:19Prompt 6: global polish19:59End-to-end test as a new user23:31Summary
Distilled from the video’s captions
How to try it
- Open Base44.
- Copy the prompt and fill in the [placeholders].
- Watch Mikey No Code's video for the full walkthrough and setup.
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