AppGrowthKit vs Proofly: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of AppGrowthKit and Proofly — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

AppGrowthKit

Paid

An AI screenshot maker that turns raw app screens into localized, store-ready App Store and Google Play listing images and app icons.

AI Layout and Copy Planning: Describe your product and the AI drafts layout, headlines, and store copy before anything changes, then applies the edits across every screen from a single prompt.
AI Localization for 42 Locales: Pick a market and the AI translates and adapts titles, subtitles, and custom text while layouts, real app screens, and editable layers stay exactly where you put them.
AI App Icon Generation: Describe the feeling, subject, and style you want and generate one, two, or four icon directions in a single pass to compare before choosing.
Layered Canvas Editor: Organize screenshots, frames, text, and backgrounds as layers and tune fonts, colors, spacing, and sizing without leaving the editor.
Current Device Frames: iPhone 17, iPhone Air, Pro Max, iPad, and Android frames kept up to date, with selectable finishes and automatic scaling when you drop in a screenshot.
One-Click Store Export: Download every screen in a project at once in the exact formats Apple and Google require, with no manual resizing and no watermark on any plan.
Browser-Side Composition: The canvas runs in the browser, so app screens do not have to be uploaded to AppGrowthKit servers to compose a set.
Credit-Free Manual Work: AI credits are spent only on generative work — layout planning, copy, localization, and icons — while the editor, frames, fonts, gradients, and exports stay unlimited on every plan.

Indie App Launch: Producing a full App Store and Play Store screenshot set for a first release without hiring a designer.
International Rollout: Generating localized screenshot copy for dozens of markets from one master set before expanding a listing worldwide.
Listing Refresh: Rebuilding store visuals after a UI redesign or a new device size by dropping updated captures into existing layouts.
App Icon Exploration: Comparing several AI-generated icon directions side by side before committing to the one that sits beside your screenshots.
Store Conversion Testing: Iterating on headlines and layouts between releases to test which framing converts better on the listing page.
Small Studio Handoff: Replacing the manual resize-and-reformat step between design tools and App Store Connect or Play Console submissions.

onderceylan (Proofly)

Free

Lightweight Chrome extension for on-device, privacy-first AI grammar, proofreading and writing assistance that works offline.

On-device Proofreading: Performs grammar, punctuation and style checks locally on the user's machine so text never leaves the device.
Offline Functionality: Full proofreading and suggestion capabilities work without an internet connection, enabling use in restricted or disconnected environments.
Privacy-first Design: Architected to avoid server-side text processing, minimizing data exposure and complying with high privacy expectations and sensitive workflows.
Lightweight Browser Extension: Small footprint extension for Chrome designed to be non-invasive in the page UI and to avoid heavy resource usage.
Real-time Writing Assistance: Provides instantaneous suggestions and corrections within browser text fields and editors while typing.
Open-source Repository: Source code is published on GitHub, allowing inspection, auditing, and self-hosted or unpacked-install options for advanced users.
On-device grammar correction and proofreading (no network calls)
Runs offline for total privacy
Lightweight, non-invasive browser extension UI
Distributed via Chrome Web Store and source on GitHub
Can be installed as an unpacked extension from source
Maintained releases (versioned GitHub releases)

Composing and proofreading sensitive emails or legal drafts directly in Chrome while ensuring no text leaves the device.
Editing documents and essays offline (e.g., on airplanes or in secure environments) with full grammar and style suggestions.
Privacy-conscious professionals who require local-only language checks for proprietary or confidential content.
Students and writers who want instant, lightweight grammar corrections in browser-based editors without subscribing to cloud services.
Teams or enterprises that prefer to audit and deploy browser extensions from source (unpacked or internal store) for tighter control.
Real-time grammar and spelling checks while composing emails or social posts in the browser
Proofreading sensitive or private documents without sending text to external servers
Offline writing assistance in environments without internet connectivity
Deploying in privacy-conscious workflows or on shared devices