Comparison

week vs MuudWave

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

Head to head
About

week

Features
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This is an app for recording your daily life. Features of week: 1. You don't need to record every day; you can record your thoughts at your own pace. Of course, it is also possible to make multiple notes in a single day. We have prioritized usability so you can record your thoughts as soon as they come to mind. 2. On Sundays, you can look back on the past week. By reviewing the records you have accumulated, you can cherish your discoveries, important events, and even ordinary days. 3. It's not just about recording; we have included various functions to look back on past entries (with more being actively added!). Features include viewing a single random record, seeing your most used emojis, and identifying weeks where you recorded the most, among others. 4. We have paid close attention to ensure it is comfortable to use in dark mode. It switches automatically in sync with your system settings. 5. Your journal text and goals are stored on your device and are not sent to the developer, advertising services or analytics services. To improve the app and display ads, we collect and use information such as device information, app usage, in-app purchases and how the app is functioning. See the Privacy Policy for details. Since you can use the app offline, you don't have to suppress the urge to take notes, whether you are in airplane mode on a flight or using the incredibly slow Wi-Fi on a Shinkansen bullet train. 6. I like designs that are simple and easy to use, yet calm and playful. Please install the app and experience the design for yourself. Before using the application, please be sure to read the following. By installing the app, you are deemed to have agreed to these terms. Terms of Use: https://www.apple.com/legal/internet-services/itunes/us/terms.html Privacy Policy: https://drive.google.com/file/d/1mVGyMKKtu-DF2D9O2AsIMT8YcfHlvW7W/view?usp=sharing

About

MuudWave

This app helps you understand your emotional patterns by tracking daily mood changes and visualizing their progression. It records relative mood shifts compared to the previous day, addressing limitations of absolute mood scales.

Highlights
  • Daily mood logging
  • Relative mood tracking
  • Emotional progression visualization
  • Understanding emotional shifts
  • Free to use
Features
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ใ“ใฎใ‚ขใƒ—ใƒชใฏใ€ๆฏŽๆ—ฅใฎๆฐ—ๅˆ†ใฎๅค‰ๅŒ–ใ‚’่จ˜้Œฒใ—ใ€ใใฎๆŽจ็งปใ‚’ๅฏ่ฆ–ๅŒ–ใ™ใ‚‹ใ“ใจใงใ€่‡ช่บซใฎๆ„Ÿๆƒ…ใฎๅ‹•ใใ‚’็†่งฃใ™ใ‚‹ใŸใ‚ใฎใƒ„ใƒผใƒซใงใ™ใ€‚ๅ‰ๆ—ฅใจๆฏ”ในใฆไปŠๆ—ฅใฎๆฐ—ๅˆ†ใŒใฉใ†ๅค‰ๅŒ–ใ—ใŸใ‹ใ‚’่จ˜้Œฒใ™ใ‚‹ใ“ใจใงใ€้•ทๆœŸ็š„ใชๅฟƒใฎๅ‹•ใใ‚’ๆŠŠๆกใ™ใ‚‹ใ“ใจใŒใงใใพใ™ใ€‚ ใ‚ˆใใ‚ใ‚‹ๆ„Ÿๆƒ…่จ˜้Œฒใ‚ขใƒ—ใƒชใฏใ€ไปŠใฎๆ„Ÿๆƒ…ใ‚’5ๆฎต้šŽ๏ผˆใจใฆใ‚‚่‰ฏใ„ใ€œ่‰ฏใ„ใ€œๆ™ฎ้€šใ€œๆ‚ชใ„ใ€œใจใฆใ‚‚ๆ‚ชใ„๏ผ‰ใชใฉใฎ็ตถๅฏพ็š„ใชๅ€คใง่จ˜้Œฒใ—ใฆใ„ใใพใ™ใ€‚ใใ‚Œใซใฏใ„ใใคใ‹ใฎๅ•้กŒใŒใ‚ใ‚Šใพใ™ใ€‚ ใƒปไปŠใฎๆฐ—ๅˆ†ใ‚’็ตถๅฏพ็š„ใชใ‚‚ใฎใจใ—ใฆ่จ˜้Œฒใ™ใ‚‹ใฎใŒ่‹ฆๆ‰‹ใชไบบใŒใ„ใ‚‹๏ผˆๆ„Ÿๆƒ…ใ‚’ๅฎข่ฆณ็š„ใซๆ‰ใˆใฅใ‚‰ใ„ไบบใŒใ„ใ‚‹๏ผ‰ ใƒปๆ˜จๆ—ฅใŒๆ„Ÿๆƒ…ใฎใƒ”ใƒผใ‚ฏใ ใฃใŸใจๆ€ใฃใŸใฎใซใ€ไปŠๆ—ฅใฏใใ‚Œใ‚’ไธŠๅ›žใ‚‹ๅฅฝ่ชฟใ ใฃใŸๅ ดๅˆใ€5ๆฎต้šŽใ‚ˆใ‚Šใ‚‚ไธŠใ‚’้ธใณใŸใ„ใŒใ€ใใ‚Œใฏไธๅฏ่ƒฝ ใƒปๆฐ—ๅˆ†ใŒๆ˜Žใ‚‹ใ„ใ“ใจใŒๅฟ…ใšใ—ใ‚‚่‰ฏใ„ใจใฏ้™ใ‚‰ใชใ„ไบบใ‚‚ใ„ใ‚‹ใŒใ€ๆ—ขๅญ˜ใ‚ขใƒ—ใƒชใงใฏใใ‚Œใ‚’่€ƒๆ…ฎใ—ใฆใ„ใชใ„ ใ€Œใ“ใ‚Œใ ใ‘่‰ฏใ„ใ€ใ€Œใ“ใ‚Œใ ใ‘ๆ‚ชใ„ใ€ใจใ„ใ†็ตถๅฏพๅ€คใงใฏใชใใ€ๅ‰ๆ—ฅใจใฎๆฏ”่ผƒใง็›ธๅฏพๅ€คใ‚’่จ˜้Œฒใ—ใฆใ„ใใ“ใจใซใ‚ˆใ‚Šใ€ใใ‚Œใ‚‰ใฎๅ•้กŒใ‚’่งฃๆฑบใงใใ‚‹ใจ่€ƒใˆใฆใ„ใพใ™ใ€‚ ๆ–ฐใ—ใ„่ฉฆใฟใ‚’ใ—ใฆใ„ใ‚‹ใฎใงใ€็š†ใ•ใ‚“ใฎใ”ๆ„่ฆ‹ใ‚’ใ†ใ‹ใŒใ„ใŸใใ€ใพใšใฏ็„กๆ–™ใงๅ…ฌ้–‹ใ—ใฆใŠใ‚Šใพใ™ใ€‚

Screenshots

week3 screens
MuudWave3 screens

Verdict

The call

The clearest difference is in-app purchases: MuudWave at none against week's 2. MuudWave also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. week sells 2 in-app purchases, starting at $1.99 per month. MuudWave asks for nothing beyond the download.

UpkeepUpdate frequency

week ships an update every 2 weeks, MuudWave every 2 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard3 real differences ยท 5 level
week versus MuudWave: the parameters behind the verdict, then further details
ParameterweekMuudWave
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 2 weeksEvery 2 days โ€” better
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
Monetizationโ€”Free
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.4 โ€” better17.5
Further details โ€” not scored
Size11 MB3 MB
Age rating4+4+
DeveloperTaito HiranoMasao Narumi

In-app purchases

2 purchases

week

Subscriptions2
  • Premium - monthly7 Days trial$1.991 Month
  • Premium - yearly$19.991 Year
None

MuudWave

No in-app purchases

Questions

Is week free?
week is free to download, with in-app purchases available.
Is MuudWave free?
MuudWave is free to download, with no in-app purchases.
Do week or MuudWave have ads?
week shows ads; MuudWave does not.
Which is updated more often, week or MuudWave?
week ships an update every 2 weeks, and MuudWave every 2 days. Most recently, week was updated on October 25, 2026 and MuudWave on October 24, 2026.

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