SAI Mini vs GCodeReader CNC
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
SAI Mini
Read full descriptionHide full description
SAI Mini is the free version of our color management tool that lets you create and share color chip PDFs entirely on your iPhone or iPad, without needing a PC. Quickly pick colors on site, organize them into palettes, and export them as PDFs on the spot. Ideal for meeting materials, production instructions, color specifications, and design reviews. Select colors from photos, a color wheel, sliders, or HEX input, and check your created colors in HEX, RGB, HSB, and CMYK. Chosen colors are listed as color chips that you can reorder by dragging, and then export as a PDF. Except for sharing and exporting PDFs, the main features do not require an internet connection. Create color chips on your iPhone or iPad even in locations with poor signal, such as airplanes, underground, or outdoors. Use AirDrop to quickly share with nearby colleagues or clients. [SAI Mini Limitations] This app is a free, ad-supported version. You can use all the same features as the paid version (SAI+) within the following limits: Maximum of 5 colors per list Maximum of 10 saved color lists If you need to save more colors or lists and prefer an ad-free experience, please consider the paid version "SAI+". How to Use: Pick a color from a photo, color wheel, slider, or HEX input. Tap "ADD" to add it to your color list. Arrange up to 5 necessary colors. Drag to reorder the colors. Export as a PDF from the LIST screen. Share via AirDrop, Email, Messages, etc. Tap a saved color list's name to rename it. The exported PDFs can be used for meeting materials, production instructions, color specs, and design reviews. HEX, RGB, HSB, and CMYK values within the PDF are recorded as text, making them easy to check, edit, and hand off to production workflows when opened in software like Illustrator. Compatible with both iPhone and iPad. Quickly pick colors on site with your iPhone, or use your iPad's large screen to create and review palettes. Designed for situations where colors need to be communicated accurately: graphic design, illustration, UI design, printing, signage, displays, painting, and on-site production. Key Features: Extract colors from photos Color wheel RGB / HSB / CMYK sliders HEX input HEX / RGB / HSB / CMYK value display Create color lists Drag to reorder color lists Up to 5 colors per list (Free version limit) Save up to 10 lists in memory (Free version limit) Timestamp for saved lists Edit color list names Export color chip PDFs Color values recorded as text in PDFs Share via AirDrop and other apps One-tap copy for HEX values iPhone / iPad support Create palettes offline No login required Free (Ad-supported) More than just selecting colors, it's a tool to organize them into palettes and seamlessly hand them off to clients or your production workflow. Photos remain on your device. Access to photos is used solely for the purpose of extracting colors from the images you select. Note: Colors extracted from photos are an approximation based on the image's pixels. They may differ from actual physical colors due to shooting environment, lighting, white balance, shadows, reflections, image corrections, and device display settings. Note: Even with the same RGB values, on-screen appearance may vary depending on the iPhone/iPad model, display settings, brightness, True Tone, Night Shift, and ambient lighting. Note: Color chips in the PDF are drawn as vector data based on the RGB values at the time of creation. HEX, RGB, HSB, and CMYK values are also recorded as text, allowing you to check and reference the numerical values when opened in Illustrator. If the PDF is resampled, the resulting values may differ from the original colors due to display environments and other factors. Note: CMYK values are simple conversions based on RGB values. Actual printed colors may vary depending on the printing environment, paper, ink, and color profiles.
GCodeReader CNC
Read full descriptionHide full description
Inspect CNC toolpaths and CAD models locally on your iPhone or iPad. Open files from Files, explore geometry in 3D and review machining programs without an account or cloud conversion. SLDPRT PART VIEWING ⢠View SLDPRT parts in 3D, including saved solid bodies, surfaces and sketch curves. ⢠Show or hide individual bodies and surfaces. ⢠Rotate, pan and zoom, or switch between standard views. ⢠CAD files are opened for viewing; the original CAD file is not modified. G-CODE REVIEW ⢠Explore 3D toolpaths with axes, a grid and view presets. ⢠Play back a program and adjust playback speed. ⢠Review cutter names and diameters from CAM comments, tool numbers, feed rates, spindle speed and estimated run time. ⢠Check X, Y and Z trajectory dimensions, including rapid moves. ⢠Collapse the program information panel to make more room for the toolpath. ⢠Edit feed and spindle values, then explicitly save the file or export a copy. CAD AND 3D MODELS ⢠Open STEP, IGES, BREP and DXF exchange files. ⢠Inspect mesh and scene formats including STL, OBJ, PLY, USD/USDZ, Alembic, DAE and SCN. ⢠View model dimensions, geometry counts and available body information. ⢠Additional previews are available for Parasolid, DWG and CDR, with partial format coverage. FILE COMPATIBILITY SLDPRT viewing uses geometry stored in the part file. Compatibility with native formats depends on the file version and available data. SLDASM assembly import is not supported. For unsupported files, export to STEP, IGES, STL or DXF in the authoring application. LOCAL WORKFLOW Selected files are processed on your device. No sign-in or upload to a conversion service is required. Privacy information and third-party licenses are available from the information button inside the app. Estimated CNC run time is an approximation. Review any edited program before using it on a machine.
Screenshots
Verdict
The clearest difference is ads: GCodeReader CNC at none against SAI Mini's shown. SAI Mini's advantage is update cadence (daily vs every 4 months) and iOS requirement (17.6 vs 26.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SAI Mini ships an update daily, GCodeReader CNC every 4 months. The most recent releases landed on November 5, 2026 and October 25, 2026 respectively.
| Parameter | SAI Mini | GCodeReader CNC |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily ā better | Every 4 months |
| Ads | Yes | No ā better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 ā better | 26.0 |
| Further details ā not scored | ||
| Size | 8 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | TAKAO OGASAWARA | Favionics |
In-app purchases
SAI Mini
No in-app purchases
GCodeReader CNC
No in-app purchases









