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App Store/ 2026

Proof

Affirmations for people who don't believe affirmations.

Proof showing a daily belief, a saved moment, and the evidence history
From a believable sentence to lived evidence
Team
One person. Design, implementation, and copy.
AI
Apple Foundation Models, running on the phone.
Accounts
None. Your words never leave your iPhone.
Analytics
Off by default.

The problem

Most affirmation apps hand you a sentence someone else wrote. If you don't believe the words, repeating them doesn't help. It feels like lying to yourself, so you stop.

Proof starts from the other end. It keeps the belief you want and changes the words until you can say them honestly.

About

Write what you wish you believed. Something bold, like “I am a morning person.”

Proof reshapes it into a sentence you can accept today, using Apple's Foundation Models on the phone itself. “I tend to feel more alert in the early hours.” Smaller claim, same direction.

Then you prove it. Once a day, you save one small piece of real evidence. Proof calls these receipts and counts them in tally marks, the same marks as the app icon.

At 3, 7, and 15 receipts, the sentence evolves back toward the bold original. Instead of repeating words until they sound true, you collect reasons to believe them.

The transformation

Four seconds: the wish becomes a sentence you can accept.

Private by design

The words never leave the phone.

What people write in Proof is close to a diary. So there are no accounts and no server. The rewriting happens on the iPhone, with Apple's on-device models.

Analytics are off unless you turn them on. Widgets and notifications can hide your words, because a belief you are not ready to say out loud is still yours.

The icon

Tally marks. Every receipt is one more mark.

Screens

Today's belief
Saving a receipt
A belief evolving

How it works

01

Write the bold version

Start with what you wish you believed, even if you can't say it with a straight face yet.

02

Accept a smaller sentence

Proof reshapes it until it feels honest today. You can edit every word.

03

Bring one receipt a day

Save one small piece of evidence from your real day. Woke up before the alarm once? That counts.

04

Let the sentence grow back

At 3, 7, and 15 receipts, the wording steps back toward the bold version. By then it has your history behind it.

This week's update

Proof is live on the App Store.

The home screen now holds all three working beliefs at once, each with its tally of receipts. Sharing now centers on the transformation itself: you can save your own before-and-after as a 60 fps video, straight to Photos.

Design mockup: the new home screen
Design mockup: the redesigned share screen

Get it

Proof is on the App Store for iPhone. The whole practice runs on the phone, and your words stay there.

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