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
Google Translate
Translate between up to 249 languages
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.3
83,702 ratings · Top 30%
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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What's included18 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Google Translate: map the core Reference 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
Expand language offerings and improve translation accuracy for niche languages.
Assumption to check: Limited language support for some rare languages
Validate with people who use this workflow before building.
Hypothesis 2
Integrate better machine learning models to enhance translation quality.
Assumption to check: Occasional inaccuracies in translations
Validate with people who use this workflow before building.
Hypothesis 3
Implement better noise cancellation algorithms for speech input.
Assumption to check: Voice recognition may not work well in noisy environments
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the UI and provide guided onboarding for first-time users.
Assumption to check: User interface can be overwhelming for new users
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
Translate between up to 249 languages. Feature support varies by language: • Text: Translate between languages by typing • Offline: Translate with no internet connection • Instant camera translation: Translate text in images instantly by just pointing your camera • Photos: Translate text in taken or imported photos • Dictation: Translate spoken words and phrases • Conversations: Translate bilingual conversations on the fly • Transcribe: Continuously translate someone speaking a different language in near real-time • Handwriting: Draw text characters instead of typing • Phrasebook: Star and save translated words and phrases for future reference Permissions notice: • Microphone for speech translation • Camera for translating text via the camera • Photos for importing photos from your library Translations between the following languages are supported: Abkhaz, Acehnese, Acholi, Afar, Afrikaans, Albanian, Alur, Amharic, Arabic, Armenian, Assamese, Avar, Awadhi, Aymara, Azerbaijani, Balinese, Baluchi, Bambara, Baoulé, Bashkir, Basque, Batak Karo, Batak Simalungun, Batak Toba, Belarusian, Bemba, Bengali, Betawi, Bhojpuri, Bikol, Bosnian, Breton, Bulgarian, Buryat, Cantonese, Catalan, Cebuano, Chamorro, Chechen, Chichewa, Chinese (Simplified), Chinese (Traditional), Chuukese, Chuvash, Corsican, Crimean Tatar (Cyrillic), Crimean Tatar (Latin), Croatian, Czech, Danish, Dari, Dhivehi, Dinka, Dogri, Dombe, Dutch, Dyula, Dzongkha, English, Esperanto, Estonian, Ewe, Faroese, Fijian, Filipino, Finnish, Fon, French, French (Canada), Frisian, Friulian, Fulani, Ga, Galician, Georgian, German, Greek, Guarani, Gujarati, Haitian Creole, Hakha Chin, Hausa, Hawaiian, Hebrew, Hiligaynon, Hindi, Hmong, Hungarian, Hunsrik, Iban, Icelandic, Igbo, Ilocano, Indonesian, Inuktut (Latin), Inuktut (Syllabics), Irish, Italian, Jamaican Patois, Japanese, Javanese, Jingpo, Kalaallisut, Kannada, Kanuri, Kapampangan, Kazakh, Khasi, Khmer, Kiga, Kikongo, Kinyarwanda, Kituba, Kokborok, Komi, Konkani, Korean, Krio, Kurdish (Kurmanji), Kurdish (Sorani), Kyrgyz, Lao, Latgalian, Latin, Latvian, Ligurian, Limburgish, Lingala, Lithuanian, Lombard, Luganda, Luo, Luxembourgish, Macedonian, Madurese, Maithili, Makassar, Malagasy, Malay, Malay (Jawi), Malayalam, Maltese, Mam, Manx, Maori, Marathi, Marshallese, Marwadi, Mauritian Creole, Meadow Mari, Meiteilon (Manipuri), Minang, Mizo, Mongolian, Myanmar (Burmese), Nahuatl (Eastern Huasteca), Ndau, Ndebele (South), Nepalbhasa (Newari), Nepali, NKo, Norwegian, Nuer, Occitan, Odia (Oriya), Oromo, Ossetian, Pangasinan, Papiamento, Pashto, Persian, Polish, Portuguese (Brazil), Portuguese (Portugal), Punjabi (Gurmukhi), Punjabi (Shahmukhi), Quechua, Qʼeqchiʼ, Romani, Romanian, Rundi, Russian, Sami (North), Samoan, Sango, Sanskrit, Santali (Latin), Santali (Ol Chiki), Scots Gaelic, Sepedi, Serbian, Sesotho, Seychellois Creole, Shan, Shona, Sicilian, Silesian, Sindhi, Sinhala, Slovak, Slovenian, Somali, Spanish, Sundanese, Susu, Swahili, Swati, Swedish, Tahitian, Tajik, Tamazight, Tamazight (Tifinagh), Tamil, Tatar, Telugu, Tetum, Thai, Tibetan, Tigrinya, Tiv, Tok Pisin, Tongan, Tshiluba, Tsonga, Tswana, Tulu, Tumbuka, Turkish, Turkmen, Tuvan, Twi, Udmurt, Ukrainian, Urdu, Uyghur, Uzbek, Venda, Venetian, Vietnamese, Waray, Welsh, Wolof, Xhosa, Yakut, Yiddish, Yoruba, Yucatec Maya, Zapotec, Zulu
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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.
SUGGESTED BUILD STACK
React Native
Expo
Axios
React Navigation
expo-speech
React Native Picker
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.
