Comparison

Just Start vs Du Contracts

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

Head to head
About

Just Start

This app helps you overcome procrastination by providing a simple, focused timer. It features a virtual companion, unlimited categories, and historical statistics to track your progress. Connect with others through a unique 'starlight' feature that shows past user efforts.

Highlights
  • Minimalist timer interface
  • Virtual companion for focus
  • Unlimited custom categories
  • Full history and trend charts
  • Starlight mode for shared effort visualization
  • Pro features unlocked for free
Features
Read full description

【About Just Start】 We believe that "Starting" is the greatest action of all. Just Start is not just a timer; it’s your launchpad to beat procrastination. We stripped away the clutter so you can do one thing the moment you open the app: Act Now. 【Why Just Start?】 1. A Companion from the Stars: Laika Remember Laika, the first dog in space? She didn't disappear; she traveled to your phone. When you focus, Laika waits by your side on the screen. Whether you're studying late or working early, she is there. It’s not just a timer; it’s a warm, silent guardianship. 2. Pro Features Unlocked (Yes, Free) We believe your growth data belongs to you. No paywalls for self-reflection. 3. Unlimited Categories: Coding, Reading, Meditation—create as many tags as you need. Free. 4. Full History Stats: Your every minute counts. Access all history records, duration stats, and trend charts without paying a cent. Visualize your achievements. 5. Starlight Mode: A Connection Across Time Focusing can feel lonely, but not here. When you start the timer, you will see the glimmering starlight left by others who have traveled this path before you. Just like looking at the night sky, these lights are echoes of past efforts from people around the world. It’s a subtle "cloud companionship" that tells you: someone else has worked hard right here, just like you.

About

Du Contracts

This app helps you build self-trust by creating time-bound "I Will" or "I Won't" commitments. Unfulfilled contracts are visible for a week, serving as a reminder to follow through on your promises to yourself.

Highlights
  • Create "I Will" or "I Won't" contracts
  • 24-hour contract expiration
  • Automatic failure tracking
  • Visible failure reminders
  • Build self-trust and accountability
Features
Read full description

The relationship you have with yourself is the most important one you’ll ever build. When you promise yourself you’ll call your doctor, do the dishes, or hit the gym—you owe it to yourself to follow through. At your core, you are two people constantly interacting with one another: the one who decides, and the one who acts. That’s Du! — the dialogue between you and yourself. Introducing Du Contracts. This app lets you create simple “I Will” or “I Won’t” contracts with a 24-hour expiration. Within that window, you either complete or fail your contract. If you don’t update it in time, it automatically moves to your Failure Folder. Failures stay visible on your home page for at least seven days—a gentle but firm reminder of your unfinished commitments. Hold yourself accountable. Build trust with yourself. Start your first Du Contract today.

Screenshots

Just Start4 screens
Du Contracts3 screens

Verdict

The call

The clearest difference is update cadence: Du Contracts at every 3 days against Just Start's weekly. Du Contracts also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.2). On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Just Start against 5.0 for Du Contracts. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Just Start ships an update weekly, Du Contracts every 3 days. The most recent releases landed on October 6, 2026 and October 20, 2026 respectively.

Scorecard3 real differences · 6 level
Just Start versus Du Contracts: the parameters behind the verdict, then further details
ParameterJust StartDu Contracts
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Number of ratings12 — better
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.213.0 — better
Further details — not scored
Size7 MB19 MB
Age rating4+4+
Developer江涛 丁Dylan Kramer

Customer experience

Just Start

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Du Contracts

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Just Start

No in-app purchases

None

Du Contracts

No in-app purchases

Questions

Is Just Start free?
Just Start is free to download, with no in-app purchases.
Is Du Contracts free?
Du Contracts is free to download, with no in-app purchases.
Which has better reviews, Just Start or Du Contracts?
Just Start and Du Contracts are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do Just Start or Du Contracts have ads?
Neither Just Start nor Du Contracts shows ads.
Which is updated more often, Just Start or Du Contracts?
Just Start ships an update weekly, and Du Contracts every 3 days. Most recently, Just Start was updated on October 6, 2026 and Du Contracts on October 20, 2026.

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