Filter Studio: Photo FX

By: 应龙张 App

Pro Photo Editing Tools

Overview

Apple Apps Store

Version:

1.0

Last updated: 2026-05-21

Ranking

#1,672,084 ▼ 9,620

Overall

Features & Capabilities

Built on Core Image and PencilKit. 15 hand-tuned filters, real-time RGB adjustments, layered text and stickers, lossless export. 100% on-device. No subscription, no ads.

FilterStudio is a professional, on-device photo editor engineered for speed, control and privacy. Built on Apple Core Image and PencilKit, it delivers studio-grade output without a server round trip and without a single subscription prompt.

ENGINE • 15 hand-tuned filters mapped to native CIFilter primitives — Mono, Noir, Fade, Chrome, Process, Transfer, Instant, Sepia, Vivid, Dramatic, Silvertone, Posterize, Bloom, Vignette, Original. • Real-time GPU pipeline — every slider rebuilds the preview at native resolution. • Lossless export — output written back to Photos at the full input pixel size, no recompression artifacts beyond standard PNG/JPEG.

ADJUSTMENTS • Brightness — linear exposure offset. • Contrast — perceptual contrast curve. • Saturation — chroma scaling, clamped against banding. • Live preview, no commit step.

LAYER SYSTEM • Text layer — UTF-8, dynamic font sizing, color and bold control, free positioning. • Sticker layer — vector-style emoji and shapes, scale and rotate. • Drawing layer — Apple Pencil first, finger fallback, multi-color. • Layers composited at export time, original photo never overwritten in place.

WORKFLOW

Pick a photo via the system PhotosUI picker.
Apply filter, adjust, add text/stickers, doodle.
Crop and rotate if needed.
Tap Save — written to Photos with library write authorization only.

PRIVACY & SECURITY • Strict on-device processing. No analytics, no telemetry, no third-party SDKs. • Photos library access is request-once, write-only by default. • No user account, no email collection, no IDFA usage.

LOCALIZATION English and Simplified Chinese, switchable from in-app settings.

REQUIREMENTS iOS 17.0 or later. iPhone only.

PRICING Free. No tier, no consumable, no in-app purchase.

FilterStudio is for users who want professional control without subscription friction. Install once, edit forever.