Comparison

Unletter vs C

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

Head to head
About

Unletter

Features
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Unletter lets you seal today's feelings into a "special envelope" and deliver them to the future. โ–  Write a letter and seal it Add photos or your voice to your message, then seal the envelope with wax. Once you pick an open day, no one can see inside until that day arrives. โ–  A note you can see before opening Keep the contents hidden, but leave a short note about the promise โ€” when, where, with whom, and on what occasion to open it. The note is always visible before opening, a gentle reminder of the day to come. โ–  A one-of-a-kind wax seal Every time you seal a letter, a wax seal is born that is never the same twice in color or shape. A special seal for your letter alone. โ–  When the day comes One year, five years, ten years later โ€” a notification arrives on the day you chose. Break the seal, open the envelope, and meet your letter again in the future. โ–  Collect them in your Letterbox Your letters line up in the "Letterbox." Browse the shelf of envelopes, or gather your one-of-a-kind wax seals in the "Seal Collection" โ€” a quiet little collection that grows with you. โ–  For moments like these - To your future self: today's dreams and worries - To someone dear: words for an anniversary - For milestones: coming of age, graduation, a wedding โ–  Leave your voice (Pro) Some feelings words can't carry โ€” say them out loud. Hearing your own voice, or a loved one's, in the future is a gift like no other. โ–  Kept safe, always Your letters are stored safely in your iCloud and synced across devices signed in with the same Apple ID. Even when you change phones, your letters to the future carry over. Your data stays in your private space and is never sent or shared with third parties. Today's heart, sent to the future.

About

C

Features
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Keep your day as a voice. C-1440 is a fully on-device personal voice journal. Press the record button the moment something strikes you and just talk. The day's small voice fragments are kept as a single record. โ–  Push to talk One thought onto today's tape with push-to-talk. Record instantly from the Action Button, Lock Screen, or Control Center. Apple Watch recording supported. โ–  On-device transcription Clips become text on the spot. Search your past records by keyword. โ–  Your past becomes a tape shelf Each day's record becomes a single tape. Add photos, labels, and stickers to make it your own. Export and share as video or audio. โ–  Reflection digests Replay your week, month, or year as one tape. "One year ago today" resurfaces gently. โ–  Yours to take anywhere Your records are your asset. Export everything as an open-format zip โ€” no lock-in. โ–  Privacy first Runs fully on device. No data collection, no tracking, no account required. Backups live only in your own iCloud Drive.

Screenshots

Unletter4 screens
C4 screens

Verdict

The call

The clearest difference is in-app purchases: C at none against Unletter's 1. Unletter's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support 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. Unletter sells 1 one-off in-app purchase. C asks for nothing beyond the download.

Scorecard2 real differences ยท 4 level
Unletter versus C: the parameters behind the verdict, then further details
ParameterUnletterC
PriceFreeFree
Update frequencyโ€”Every 9 days
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone, Apple Watch โ€” better
Requires iOS17.0 โ€” better26.0
Further details โ€” not scored
Size1 MB5 MB
Age rating4+4+
Developeryusuke yoshidaHANDSUM.INC

In-app purchases

1 purchases

Unletter

One-time1
  • Unletter Pro$3.99
None

C

No in-app purchases

Questions

Is Unletter free?
Unletter is free to download, with in-app purchases available.
Is C free?
C is free to download, with no in-app purchases.
Do Unletter or C have ads?
Neither Unletter nor C shows ads.

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