Comparison

Milki vs Opening Bell

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

Head to head
About

Milki

This app helps you overcome procrastination by tracking your study and work sessions using the Pomodoro technique. Set custom daily targets for activities and visualize your progress with powerful charts to stay motivated and achieve your goals.

Highlights
  • Customizable daily targets
  • Actual vs. Target progress charts
  • Pomodoro technique focus timer
  • Activity tracking and metrics
  • Multi-device sync
  • Status levels and leaderboards
Features
Read full description

Study timer with custom targets that will end your procrastination forever! Pomodoro time tracking with targets is your answer to getting more done. How much does it suck pulling an all nighter because you left your study to the last minute. Or the disappointment of your side project losing momentum. With Milki, you can set variable daily targets for each activity and track against them over a defined period e.g. 2 weeks or 2 months. The Actual vs. Target (worm) chart is incredibly powerful at keeping you on track, you can visually track your performance over the period. No other focus timer app does this, so I had to create one that did haha. Milki also uses the Pomodoro productivity hack of 25 minute intervals. With the combination of the Pomodoro technique & Actual vs. Target tracking, you will be shocked at the improvement for your study, work or side projects. CUSTOM TARGETS • Set variable daily targets for each activity e.g. Study or Side Project. • Actual vs. Target chart, the ultimate way to stay on track. • See how you are tracking against your targets over the defined period. FOCUS TIMER • Perform focus timer intervals. • Utilizes the Pomodoro Technique. • Short & long breaks between sessions. SYNC MULTIPLE DEVICES • One account for all your devices. ACTIVITIES • Create activities like Study, Work, Side Project, Life Admin or Chem 101. • Quickly switch between activities. • Charts and metrics for each activity. CLEAN & BEAUTIFUL DESIGN • Incredible design & animations. • Miki is seriously cute. CHARTS • Actual vs. Target charts, track your performance over time. • Charts for each activity, quickly switch between tasks / activities. • Daily, weekly, monthly charts for each activity e.g. Physics 101. STATUS LEVELS • As you do more sessions, you will climb the status levels and unlock more features! • Status Levels including NOOB, BRONZE, SILVER, GOLD & PLATINUM. • Gain access to exclusive features and benefits at each status level increase. LEADERBOARD • Streak leaderboard. • Daily, weekly, monthly & lifetime leaderboards! FEATURE REQUESTS • Email me directly if you have feature requests, at hello@milki.app LANGUAGES • English • Turkish • French • German • Italian • Brazilian Portuguese • Malay SAY HI My name is Chris, I developed Milki & I’m from Brisbane, Australia. I’m actively building features for Milki! Let me know if you have feature requests or suggestions. I will reply to your email ridiculously fast (if I am awake, Australia time zone). Email: hello@milki.app MILKI PRO • Sync multiple devices. • Customize session time. • Customize alarm sounds. • Customize long breaks. • Combined weekly & monthly charts. Milki offers auto-renewing subscriptions: • $11.99 billed annually. The subscription will automatically renew unless it is canceled more than 24 hours in advance of the period. Your account will be charged the subscription price within 24 hours of the period ending. To manage your active subscriptions, go to App Store settings. You can only get the introductory price once. The price above is in USD, prices may vary between countries & with local exchange rates. To read our policies, go to: • Terms & Conditions: https://www.milki.app/terms • Privacy Policy: https://www.milki.app/privacy-policy

About

Opening Bell

This app gamifies habit tracking by treating habits like stocks. Log your activities to increase their 'price,' and review your weekly performance with market-style earnings reports. It offers unique comeback bonuses and trading halts for missed habits.

Highlights
  • Habits as stock tickers
  • Price increases with logging
  • Weekly earnings reports
  • Comeback bonuses
  • Trading halts for misses
  • Customizable guidance
  • Social exchanges
Features
Read full description

Your habits trade like stocks. Log one and the price rises, miss it and it falls, and every Sunday the market posts earnings on your week. Most habit trackers give you a streak and take it away. This one gives you a price, and it pays most for coming back. HOW IT WORKS 1. List your habits as tickers. $GYM, $ZZZ, $BOOK, or your own. Each one opens at $10. 2. Log them as you go. A logged day lifts the price, a missed day takes 0.5% at the close. 3. Sunday, the market posts earnings. Your week is scored against the guidance you set, ticker by ticker. WHAT MAKES IT DIFFERENT • Comebacks pay double. After two misses, your next session moves the price twice as far. • Three misses in a row halts the ticker until Monday. Not a guilt trip, a trading halt, with a screen that asks what got in the way. • Arm a circuit breaker and a third miss holds the price instead of halting it, so the week keeps trading. • Guidance is a promise you make to yourself, not a target the app picks. Beat it, meet it, or miss it. THE EARNINGS CALL Every week closes with a call. Put your own call on the record before the numbers print, read the print ticker by ticker, take the desk's questions, and set guidance for next week. It plays as a pixel-art trading floor, or as plain type if you prefer. Your answers stay on your device. THE TAPE • One index for your whole fund, weighted the way you set. • A page for every habit: the tape as a line or as candles, a rating from this week's numbers, and your streaks. • An archive of past calls. • A home screen widget with your price, today's move and the tape. • Light and dark, following your system or held either way. SHAREHOLDERS AND EXCHANGES • Send a link and a friend becomes a shareholder. They see your fund and the listings you leave open. Mark a listing private and it never leaves your book. • Open an exchange: a group of funds quoted as one index. The group chat, with a price on it. Joining is free for everyone. • The Street shows how everyone holding a habit is doing, in aggregate only, and only once ten or more people hold it. Opt out in Settings. • Block or report anyone. Blocking is silent. YOUR ACCOUNT • No sign-up to start. Sign in with Apple or Google to keep your fund and carry it to a new phone. • Export your data any time. Delete your account and history from Settings. • No ads, ever. OPENING BELL PLUS The free plan tracks 5 habits, opens the last 12 weeks of calls, gets 1 circuit breaker a month, and creates 1 exchange. Plus is optional and adds: • Up to 30 habits • Every week in the archive • Circuit breakers without a monthly cap • Up to 10 exchanges you create • The Lock Screen ticker: a Live Activity on the Lock Screen and in the Dynamic Island, and the medium home screen widget • Your statement as a CSV export • Trading floor palettes: Terminal, Paper and Blue chip, light or dark • An analyst note written by AI each week, only if you allow it Plus is $2.99 a month, or $19.99 a year with a 7-day free trial. Prices are in US dollars and vary by country. Payment is charged to your Apple ID when you confirm the purchase, or when the free trial ends. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period, and renewal is charged within the 24 hours before the period ends. Manage or cancel any time in Settings, Opening Bell Plus, Manage subscription, or in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fredfermin02.github.io/openingbell-legal/privacy/ Prices in Opening Bell are a score computed from your own check-ins. There is no real money, no real trading, and no brokerage. Opening Bell does not give investment advice.

Screenshots

Milki4 screens
Opening Bell4 screens

Verdict

The call

The clearest difference is ratings volume: Milki at 107 against Opening Bell's 4. Milki also leads on device support (3 vs 1). Opening Bell's advantage is update cadence (every 4 days vs fortnightly). On price, rating, review sentiment 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. Milki sells 3 in-app purchases, starting at $11.99 per year and Opening Bell sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Milki against 5.0 for Opening Bell. That said, the two scores are not equally well evidenced: Milki has 107 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 97% of Milki's written reviews are positive against 100% of Opening Bell's.

UpkeepUpdate frequency

Milki ships an update fortnightly, Opening Bell every 4 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Milki versus Opening Bell: the parameters behind the verdict, then further details
ParameterMilkiOpening Bell
PriceFreeFree
Rating4.9 (107 ratings)5.0 (4 ratings) — better
Positive reviews97.3% of reviews100.0% of reviews — better
Number of ratings107 — better4
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size95 MB64 MB
Age rating4+12+
DeveloperChristopher ODonnellFrederick Fermin

Customer experience

Milki

All ratings108 ratings
Positive96.3%
Neutral1.9%
Negative1.9%
Written reviews333 reviews
Positive97.3%
Neutral1.5%
Negative1.2%

Opening Bell

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Milki

Reported bugs

2 issues
  • Occasional issues with timer counting
  • Pomodoro history not updating correctly for some users

Requested features

5 requests
  • Add widgets for easier access
  • Ability to adjust pomodoro and break times without paying
  • More detailed statistics and analytics
  • Ability to share progress with friends or classmates
  • Integration with other productivity/study apps

Opening Bell

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Milki

Subscriptions3
  • Miki Pro Subscription1 Year trial$11.991 Year
  • Miki Pro Subscription1 Year trial$29.991 Year
  • Miki Pro Subscription1 Year trial$59.991 Year
2 purchases

Opening Bell

Subscriptions2
  • Opening Bell Plus, Monthly$2.991 Month
  • Opening Bell Plus, Annual7 Days trial$19.991 Year

Questions

Is Milki free?
Milki is free to download, with in-app purchases available.
Is Opening Bell free?
Opening Bell is free to download, with in-app purchases available.
Which has better reviews, Milki or Opening Bell?
Opening Bell is rated higher. Milki averages 4.9 out of 5 from 107 ratings, while Opening Bell averages 5.0 from 4 ratings.
Do Milki or Opening Bell have ads?
Neither Milki nor Opening Bell shows ads.
Which is updated more often, Milki or Opening Bell?
Milki ships an update fortnightly, and Opening Bell every 4 days. Most recently, Milki was updated on October 24, 2026 and Opening Bell on October 24, 2026.

Other comparisons