Comparison

Just One vs Cumulus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Just One

Features
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"Just One" is a beautifully crafted companion designed to help you understand and control your smoking habits without the guilt or complexity of traditional trackers. Designed with a philosophy of "Honest Reflection," Just One moves beyond simple counting. It analyzes your daily patterns, assigns a performance grade (S to D), and helps you visualize not just how much you smoke, but how much you save—both in money and health impact. Key Features: Premium Experience: A satisfying "Liquid Glass" interface with immersive haptic feedback that makes every interaction feel real. Privacy First: Your data belongs to you. Built with SwiftData and CloudKit, everything stays on your device or your private iCloud. No servers, no tracking, no accounts. Smart Grading: Receive a daily "Smoking Grade" (S, A, B, C, D) based on your goals. It’s like a credit score for your lung health. Dynamic Insights: See real-time calculations of money spent and tar/nicotine intake. Intelligent Notifications: Forget generic reminders. Just One analyzes yesterday’s data to send you personalized encouragement or gentle warnings. Weekly Reports: Detailed breakdowns of your weekly progress to help you spot trends and cut back effectively. Take control, one tap at a time.

About

Cumulus

Features
Read full description

Build your skills one block at a time with Cumulus. Cumulus is a simple, beautiful time tracker designed to help you build and measure progress on any skill. Whether you're learning guitar, studying a new language, coding, or practicing meditation—Cumulus helps you stay consistent and see your growth over time. Key Features: • Simple Time Tracking — Tap to start, tap to stop. Your sessions are automatically saved. • Organize Your Skills — Create categories and nest skills like building blocks. Track "Music" with sub-skills like "Guitar" and "Piano." • Visual Progress — See colorful charts showing how you spend your time across all your skills. • 100% Private — All data stays on your device. No accounts, no cloud, no tracking. • Clean Design — A focused, distraction-free interface that gets out of your way. Start stacking up your skills today with Cumulus.

Screenshots

Just One4 screens
Cumulus4 screens

Verdict

The call

Just One and Cumulus are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Just One versus Cumulus: the parameters behind the verdict, then further details
ParameterJust OneCumulus
PriceFreeFree
Update frequency—Every 2 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better18.5
Further details — not scored
Size12 MB11 MB
Age rating17+4+
Developer子威 毛ADAM CLAYTON HOLWERDA

In-app purchases

None

Just One

No in-app purchases

None

Cumulus

No in-app purchases

Questions

Is Just One free?
Just One is free to download, with no in-app purchases.
Is Cumulus free?
Cumulus is free to download, with no in-app purchases.
Do Just One or Cumulus have ads?
Neither Just One nor Cumulus shows ads.

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