Continuum vs Deny
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Continuum
This minimalist habit tracker uses a visual 66-day grid to help you build lasting habits. Stay motivated with milestone celebrations and smart reminders, all within a distraction-free design. Syncs seamlessly across devices.
- Visual 66-day habit grid
- Milestone celebrations
- Smart custom reminders
- iCloud sync across devices
- Distraction-free dark theme
- Home Screen widget
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Miss a day. Nothing resets. Continuum is the habit tracker for consistency, not perfection: one number per habit, the share of days you actually showed up over the last 66. It's free. There's nothing to sign up for and nothing to buy. THE NUMBER Streaks are brittle. One bad Tuesday and six weeks read 0, which is usually the day people quit. I built this app around streaks for a year, freezes included, and it was the wrong number to put in front of anyone who was mostly doing fine — the person who misses one Tuesday in six weeks is exactly the one a reset loses. Here a missed day is a dip: a point or two once a habit is a couple of months old, more while it's new. Show up tomorrow and it climbs back. The count starts on your first day. A habit you began last week isn't scored against the weeks before it existed. GETTING MORE CONSISTENT Every number has a triangle beside it: how far it moved this week. The stats screen draws your last 12 weeks as bars, one per week, so you can see whether you're getting better — which matters more than whether you're perfect, because almost nobody is. NEVER MISS TWICE It's James Clear's rule. Missing once is normal; the trick is not letting one miss turn into two. With reminders on, a missed day gets one quiet nudge the next evening. Mark it and the card says you're back on it. 66 DAYS, MOST OF THEM In a UCL study (Lally et al., 2010), daily habits took a median of 66 days to become automatic — 18 for some people, 254 for others — and one missed day didn't materially slow it down. A 2024 review of 20 studies says to plan on two to five months. So a habit here is formed after 66 days with at least 80% of them done. The 80% is my line for "most days"; neither paper sets one. THE GRID Every habit gets a 66-day grid, one square per day. Your number is exactly the filled squares over the squares so far. MARKING DONE Press and hold. Haptics build under your thumb and release when the day registers (hard to do by accident). Forgot yesterday? Tap once, then hold. WIDGETS Home screen and lock screen, percentage included. On the home screen, mark a habit done without opening the app. THE REST A year heatmap per habit. Share cards. iCloud sync across your devices. Dark, monospaced, deliberately plain. There's no social feed, and nothing resets.
Deny
This app helps you regain focus by blocking distracting applications. It requires a friend's approval to unlock apps, fostering accountability and making screen time limits stick. Take back your attention with a collaborative approach to digital well-being.
- Block distracting apps and sites
- Schedule app blocking
- Daily time limits for apps
- Friend approval required for unlocks
- Temporary unlock with countdown
- Collaborative progress tracking
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Deny locks the apps that waste your time — and puts a friend in charge of the key. Most screen-time apps fail for one reason: the moment you want back in, you just tap "ignore limit." Deny removes that escape hatch. Block your most distracting apps, and when you want to unlock them, you have to ask a friend to approve it. HOW IT WORKS • Build block groups — pick the apps and sites to lock, on a schedule or a daily time limit. • Stay locked. Blocked apps are shielded by iOS, so there's no sneaking past them. • Allow temporary unlocks — give yourself a set number of minutes, with a live countdown showing exactly when apps re-lock. • Bring in friends. Connect with an invite code, then ask a friend for screen time. They approve or deny — you stay accountable. • See each other's progress and keep one another honest. WHY DENY • Friends make it stick. Accountability beats willpower. • Honest by design — no one-tap "ignore." • Private. Your data is yours; we never sell it or use it for ads. Deny uses Apple's Screen Time (Family Controls) features to block apps on your own device. Take back your attention — together.
Screenshots
Verdict
The clearest difference is ratings volume: Continuum at 6 against Deny's 1. On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Continuum against 5.0 for Deny. That said, the two scores are not equally well evidenced: Continuum has 6 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Continuum | Deny |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 2 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryan Frigo | StepAI K.K. |
Customer experience
Continuum
Deny
In-app purchases
Continuum
No in-app purchases
Deny
No in-app purchases









