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iPhone app

Constant

75 Day Challenge. A checklist to tick off every day, your progress photos and your numbers, all the way to the last day.

Coming soon to the App Store App Store page (live at launch) Version française

01

The challenge

75 days, at your level: Strict, Medium, Soft, or Custom, which also lets you go for 100 days.

02

Today's list

Every day, you tick off your workouts, diet, alcohol, water, reading and progress photo. An evening reminder, if you want one.

03

Tracking

A calendar of your challenge, before/after photos and a gallery, your numbers, and a 9:16 card to share.

The Strict level

Two 45-minute workouts a day, one of them outdoors; a diet you stick to; no alcohol; 3.8 litres of water; 10 pages of reading; one progress photo. Medium and Soft ask for less, and Custom lets you set the challenge yourself.

Your data stays with you

Constant works with no account and no ads, and does not track what you do in the app. Your challenge is stored on your iPhone and in your iCloud; your photos stay on your iPhone. We never have access to any of it. Apple Health is optional. Details are in the privacy policy.

Pricing

A 7-day free trial with every feature, no credit card and no commitment. When the trial ends, nothing is charged and nothing is erased.

Free, for as long as you like: the counter, today's list, catching up on a day, the evening reminder, and ticking off your daily photo by hand.

Paid features: the camera with overlay, the gallery, before/after, Apple Health, the share card, the Custom level (including the 100 day challenge), detailed numbers and history.

Yearly — €19.99 a year, about €1.67 a month. Renews automatically.

Weekly — €2.99 a week. Renews automatically.

75 Day Pass — €9.99, paid once. No subscription, no renewal: 90 days of access from the day you buy it.

Prices in France, VAT included. The exact price is the one shown by the App Store in your country, before you buy. See the terms of use.

Good to know

Constant is a personal tracking tool, not a medical service. A demanding fitness or diet challenge is not right for everyone: check with a doctor before you start. You remain solely responsible for how you train and eat.

Support

Questions, or a problem with a purchase? Email lameutedgt@gmail.com. We reply within two business days, in English or in French.

© 2026 La Meute Digitale — 25 rue de Ponthieu, 75008 Paris, France · SIRET 910 471 598 00029
Publisher of the PaceFuel, Ulvoo, Intact and Constant apps · Hosting: Netlify, Inc.
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