Comparison

One Timer vs Dopa

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

Head to head
About

One Timer

Easily manage multiple timers simultaneously for everyday tasks like cooking or interval training. Quickly start timers with a single tap and customize their appearance with a wide range of colors. The app offers a premium plan for an ad-free experience and unlimited custom timers.

Highlights
  • Simultaneous multi-timer functionality
  • One-tap timer launch
  • Customizable color settings (RGB)
  • Background notifications
  • HIIT and Pomodoro timer support
  • Stopwatch for work hours
Features
Read full description

One Timer is a simple timer created by a developer who really wanted it. You want to time your family's instant noodles for 3 minutes and 5 minutes at the same time, but you can't do it quickly. You want to boil eggs for 8 and a half minutes while measuring pasta for 6 minutes, but you can't do it. You want to open the app and start it immediately with one tap. We've solved those everyday problems for you and me. --- This tool is useful in scenarios like below --- - As a timer for HIIT (High-Intensity Interval Training) - As a Pomodoro timer for study sessions - As a stopwatch to calculate working hours for freelance or contract work - For managing stamina in multiple social-network game apps --- Customizable Color Settings --- You can set the background and text colors using RGB values, allowing for free changes to any color. This feature enables you to boost motivation by changing to your favorite colors. --- How to use --- - Tap the desired time from the list on the left to start the timer. - You can quickly add another timer without switching screens by long-pressing the list. - For example, you can start multiple timers simultaneously by long-pressing 3 minutes and 5 minutes. - Notification when it goes into the background. --- PREMIUM Plan --- - No Ads - Unlimited Custom Timers --- Links --- https://40yd.app/one_timer_terms https://40yd.app/one_timer_policy

About

Dopa

Features
Read full description

Dopa-writing helps you break the habit of endlessly opening social media, short videos, and games. Pause, write out your thoughts and feelings, and make room for a clearer mind. You don't have to give up your phone all at once. Start by putting the noise in your head into words. Stress, worry, frustration, unfinished thoughts. Write them as they are, for yourself rather than an audience. If you don't want to keep them, let them go without saving. Getting that noise out of your head can give you room to think. A clearer mind makes space for new ideas. When inspiration strikes while you write, capture it immediately with Flash Ideas. Dopa-writing is about more than simply restricting your phone. Turn a device you reach for without thinking into a tool for understanding yourself, thinking deeply, and finding inspiration. Build a new relationship with your phone, one writing session at a time. MAIN FEATURES * Dopa-writing Write down thoughts and feelings as they come, and quiet the mental noise. Shift from endless input to expressing what's already on your mind. * Release Let go of writing you don't want to keep, without adding it to your saved records. * Flash Ideas Capture ideas that appear while you write without interrupting your train of thought. Make space for inspiration as you let go of mental clutter. * App Blocking Use Screen Time to interrupt automatic access to selected apps. Take regular breaks from mindless scrolling and write about what's drawing you back to your phone. * 3 + 1 Intervention Levels Choose Beginner, Intermediate, or Advanced, plus Ultra for complete blocking. Adjust the intensity to suit your goals and gradually change your relationship with your phone. * Reflection Review your character counts, writing time, and how often you interrupted your scrolling. * Dopa Persimmon Grow your own Dopa Persimmon as you keep writing. It grows with your character count, bears fruit, and then...? * Japanese and English Support PRIVACY What you write in Dopa-writing is not sent to external servers. You don't have to post it on social media or share it with anyone. This is a private space to freely express your thoughts, feelings, and whatever is on your mind. PRO The free version includes the core writing experience and app blocking. Dopa-writing Pro unlocks the full experience, including: * More apps you can restrict * Intermediate and Advanced intervention levels * Detailed schedules by day and time * Unlimited Flash Ideas * Instant switching between journaling and Dopa-writing Get more tools to move beyond mindless scrolling and use your phone with intention. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

One Timer3 screens
Dopa4 screens

Verdict

The call

The clearest difference is iOS requirement: One Timer at 17.6 against Dopa's 26.5. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. One Timer sells 4 in-app purchases, starting at $1.99 per month and Dopa sells 1 in-app purchase, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 9 level
One Timer versus Dopa: the parameters behind the verdict, then further details
ParameterOne TimerDopa
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS17.6 — better26.5
Further details — not scored
Size42 MB50 MB
Age rating4+4+
DeveloperDAIKI YUASAakihiro oga

In-app purchases

4 purchases

One Timer

Subscriptions1
  • PREMIUM$1.991 Month
One-time3
  • Buy me a coffee$1.99
  • Buy me a burger$3.99
  • PREMIUM$9.99
1 purchases

Dopa

Subscriptions1
  • Pro Annual14 Days trial$29.991 Year

Questions

Is One Timer free?
One Timer is free to download, with in-app purchases available.
Is Dopa free?
Dopa is free to download, with in-app purchases available.
Do One Timer or Dopa have ads?
Neither One Timer nor Dopa shows ads.
Which is updated more often, One Timer or Dopa?
One Timer ships an update every 4 days, and Dopa every 4 days. Most recently, One Timer was updated on October 22, 2026 and Dopa on October 14, 2026.

Other comparisons