Comparison

Mie信 vs Time Capsule

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

Head to head
About

Mie信

Features
Read full description

跟朋友说,怕添麻烦。 跟家里人说,怕被追问。 一个人憋着,更累。 MIE信让你把现在的心情发出来,等一句「我懂」。 不用讲清楚来龙去脉,也不用写得漂亮。 【说出来】 把此刻写下来就行。不一定要有大事。话堵在胸口的时候,发出去,就会轻一点。 【被接住】 有人回你一句「我懂」或「抱抱」。不急着给建议,先听你说。不想解释,就不解释。 【想说再聊】 还想倒倒苦水,就接着说。不想说了,随时停。没有人能拽住你。 你不会遇见熟人围观,也不会被通讯录推给认识的人。别人看到的是昵称和头像,不是手机号,也不是真实姓名。 适合失眠的夜里、下班路上,或任何「想说却不好意思发给熟人」的时候。 请注意:MIE信不是心理咨询,不能代替医生或咨询师。如果很难受、想到伤害自己,请马上联系专业机构或急救电话。

About

Time Capsule

Write letters to your future self, attach photos and voice notes, and schedule their delivery. The app keeps your messages private until the chosen date, offering a unique way to reflect on your past.

Highlights
  • Write letters to your future self
  • Schedule delivery dates
  • Attach photos and voice notes
  • Tag mood and set reminders
  • Secure with Face ID/Touch ID
  • View mood mix and writing rhythm
Features
Read full description

Time Plane is a letter to your future self. Write how you feel, fold it into a plane, and choose the day it returns. When that day comes, it lands—and you open it to meet who you were. Letters in flight stay sealed. Nothing in the text is shown early. Arrived planes open with a short unsealing ritual. Your letters, photos, and voice notes live only on this iPhone. There is no account and no iCloud sync. If you switch phones or delete the app, they cannot be recovered—back up anything that matters. You can: • Write to your future self and return in 3 days, 7 days, a month, a year, or on a custom date • Tag your mood and get a reminder on the return day • Attach a photo and record up to 30 seconds of audio (after unlock) • See mood mix and writing rhythm in Mood Sky (after unlock) • Lock the app with Face ID, Touch ID, or your device passcode Send 5 letters for free. Deleted letters do not restore a slot. Unlock unlimited hangar space, photos, voice notes, and Mood Sky with an in-app upgrade. Purchases go through Apple; manage subscriptions in Settings. No ads. No tracking. Privacy Policy: https://920088819.github.io/paper-plane-privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mie信4 screens
Time Capsule4 screens

Verdict

The call

The clearest difference is update cadence: Time Capsule at daily against Mie信's every 6 days. Mie信's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement 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.

UpkeepUpdate frequency

Mie信 ships an update every 6 days, Time Capsule daily. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 7 level
Mie信 versus Time Capsule: the parameters behind the verdict, then further details
ParameterMie信Time Capsule
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 6 daysDaily — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size22 MB4 MB
Age rating17+4+
Developer昆明咩信科技有限公司缓缓 刘

In-app purchases

None

Mie信

No in-app purchases

None

Time Capsule

No in-app purchases

Questions

Is Mie信 free?
Mie信 is free to download, with no in-app purchases.
Is Time Capsule free?
Time Capsule is free to download, with no in-app purchases.
Do Mie信 or Time Capsule have ads?
Neither Mie信 nor Time Capsule shows ads.
Which is updated more often, Mie信 or Time Capsule?
Mie信 ships an update every 6 days, and Time Capsule daily. Most recently, Mie信 was updated on November 8, 2026 and Time Capsule on November 6, 2026.

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