Independent apps · Mac & iPhone
PicCute compresses and converts images in batches on your Mac. Ledger 63 is a vintage style iPhone calculator with a history you can reuse. No accounts, no clutter, just tools that get out of your way.
The apps
One makes images lighter, the other makes numbers easier to keep track of. Each has its own page with features, screenshots, a quick start guide and answers to common questions.
Batch image compressor & converter for Mac
Drop in a folder of images, move one quality slider, click Run. Files typically shrink by over 60% while staying visually the same, and every image is processed locally on your Mac.
Vintage style calculator for iPhone
A calculator with the warmth of an old adding machine: glowing display, chunky keys and a paper style ledger that keeps every calculation so you can tap to reuse it.
| App | Platform | Primary Job | Key Capabilities | Privacy & Storage |
|---|---|---|---|---|
| PicCute | macOS | Batch image compression & conversion | 60%+ size reduction, 8 input formats (incl. HEIC, APNG), 5 output formats, side-by-side compare slider, parallel Rust engine | 100% local on Mac · Offline · No uploads |
| Ledger 63 | iPhone (iOS) | Vintage calculator with reusable history | Basic & scientific modes, RAD/DEG toggle, cursor expression editing, live result preview, tap-to-reuse paper ledger | 100% local on iPhone · Offline · No accounts |
Find the right tool
Pick a task to see which app handles it and how, in a few steps.
Large screenshots and photos are slow to upload and heavy to email. PicCute shrinks a whole folder at once while keeping visual quality.
iPhone photos are saved as HEIC, which some websites and apps still do not accept. Convert them to JPG in one go.
WebP images are usually much smaller than PNG, which helps websites load faster. Convert an entire asset folder at once.
Ledger 63 keeps each calculation on a paper style tape, so you never need to retype a long expression or a result.
Switch from Basic to SCI for sin, cos, tan, log, ln, powers, roots, π and e, with a RAD/DEG toggle for angles.
How the apps are made
Every app here follows the same few rules, so you know what to expect before you download.
PicCute processes images on your Mac. Ledger 63 keeps history on your iPhone. Nothing is uploaded.
Open the app and start. No sign up, no login, no email required.
Built natively for macOS and iOS, following the look and feel you already know.
Each app solves one clear problem instead of trying to do everything.
“I build the apps I want to use myself: quiet tools that open fast, do one job well and respect your files. Every app here is designed, built and supported by one person, so your feedback goes straight to someone who can act on it.”
The independent developer behind Good tools
