Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Layout Photo Collage - Mixgram
Other apps make collages
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
52,061 ratings · Top 15%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Layout Photo Collage - Mixgram: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Provide a wide variety of customizable templates.
Assumption to check: Limited template options for collages
Validate with people who use this workflow before building.
Hypothesis 2
Implement more subtle prompts for premium features.
Assumption to check: In-app purchase prompts can be intrusive
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image loading and caching.
Assumption to check: Long loading times for large galleries
Validate with people who use this workflow before building.
Hypothesis 4
Include comprehensive editing tools similar to dedicated photo editors.
Assumption to check: Lack of advanced photo editing features
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Other apps make collages. Mixgram makes them MOVE. Turn your photos and videos into scroll-stopping animated collages, edit on a real video timeline, add trending effects, and export in 4K — one app, trusted by 50 million creators for over a decade. Make it once, share it everywhere: TikTok, Instagram, Reels, Stories, WhatsApp. MIXGRAM AT A GLANCE • Photo & video collages with hundreds of grids, layouts & templates • Animated collage templates — drop in photos, get a share-ready video • Full video editor: timeline, music, trims, speed & 4K export • 40 viral effects: Glitch, VHS, Neon, Shake, Rain, Lightning & more • Stitch Studio for scrolling videos & extra-long photos • Sticker maker, cutouts, filters, fonts, backgrounds & doodles ANIMATED COLLAGES Professionally animated templates that bring your photos to life. Pick a template, drop in your photos, and get a scroll-stopping video in seconds — cinematic entrances, beat-driven layouts, and looping motion designed for the feed. Perfect for recaps, birthdays, photo dumps, and everything worth celebrating. ONE-TAP ANIMATIONS 14 cinematic presets — Pop, Wiggle, Ken Burns, Spotlight, Photo Dump and more. Animate your whole project at once, or give every photo, sticker, and text its own motion. Preview any animation instantly on your own content. A REAL VIDEO EDITOR INSIDE Trim clips, add music, control speed and volume, and fine-tune every element on a silky-smooth timeline. Then export in stunning quality up to 4K, powered by a high-performance rendering engine. VIRAL VIDEO EFFECTS 40 trending effects, one tap to apply: Glitch, VHS, Neon, Strobe, Light Leaks, Kaleido — plus Rain, Snow, Lightning and other atmosphere magic. Preview any effect on your own video instantly and dial in the intensity. STITCH STUDIO Think beyond a single post. Combine clips into seamless scrolling videos or stitch photos into extra-long panoramas — made for creators who want their feed to flow. YOUR STYLE, YOUR RULES • Hundreds of grids, layouts and a freestyle canvas — precise spacing, borders, and corners • Exclusive stickers plus a cutout Sticker Maker — export your packs straight to WhatsApp • Trendy fonts, curved text, filters, backgrounds, GIFs, and doodles • Memes, wallpapers, and photo widgets for your home screen NEVER LOSE A PROJECT Sign in and your projects back up to the cloud — pick up right where you left off (rolling out gradually). MIXGRAM PREMIUM Unlock everything: the full template collection updated regularly with trending designs, all animations and effects, the sticker maker, premium fonts and backgrounds — all watermark-free and ad-free. Try it free. LOVED BY 50 MILLION CREATORS For over a decade, Mixgram has helped people turn everyday moments into something worth sharing. Version 26 is our biggest leap yet — faster, smoother, and more powerful than ever. Download Mixgram and make something that stops the scroll. Terms of Use: https://www.mixgram.com/terms Privacy Policy: https://www.mixgram.com/privacy We can't wait to see what you create.
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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BUILD KIT DIFFICULTY
Advanced
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
