Time Capsule vs Letterseal
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Time Capsule
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Send a message to your future self or loved ones. Time Capsule lets you create meaningful messages that unlock at a specific date and time in the future. Whether it's a reminder, a promise, or words of encouragement, preserve your thoughts and feelings for tomorrow. KEY FEATURES: - Schedule messages for any future date and time - Send capsules to friends and family - Beautiful, intuitive interface - Secure and private - your messages are encrypted - Get notified when capsules are ready to open - Share memories and moments across time PERFECT FOR: - Birthday wishes sent months in advance - New Year's resolutions to open next year - Anniversary messages for loved ones - Future reminders to yourself - Preserving special moments Download Time Capsule today and start creating memories for tomorrow.
Letterseal
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Write a letter to the person you'll become. Seal it in wax. Then let time do the rest. Letterseal is a time capsule for your words. Write to your future self, choose the day it opens and press the seal. Until that day, all you see is the envelope and a countdown. NEW IN 3.0 ⢠Real wax seals, envelopes and paper: choose your paper and wax color, and press your initials into the seal (Unlimited) ⢠Send a sealed letter to someone you love. It opens in their Letterseal only on the date you chose ⢠Video letters up to 3 minutes and voice letters up to 5 minutes (Unlimited) ⢠"This year's letter": write it in December or January, open it on New Year's Day a year from now HOW IT WORKS 1. Write on paper that feels like paper. Add photos, and with Unlimited your voice or a short video. 2. Choose a date: next month, your next birthday, ten years from now. Or let Letterseal hide a surprise date. 3. Seal it. Press the wax, and the letter stays closed until its day. 4. Open it. On the day, break the seal and read what you once hoped, feared and promised. LETTERS FOR SOMEONE ELSE Write to your child for their 18th birthday, to a friend for next summer, to your partner for your anniversary. Letterseal sends the sealed letter as a file by AirDrop, Messages or Mail. When they open it in Letterseal, it waits, sealed, until the date. They need Letterseal (free) to open it. MADE FOR THE WAIT ⢠56 writing prompts, including New Year and "for someone" themes ⢠Home Screen and Lock Screen widgets, including a new large widget ⢠A Live Activity in the final 8 hours, and a live seconds countdown on the last day ⢠Reply to your past self, or write ahead to your next self ⢠Export any opened letter as a keepsake PDF PRIVATE BY DESIGN No account. No cloud. No ads. No tracking. Your letters stay on your iPhone and the developer collects no data. Lock the app with Face ID and keep an encrypted backup file wherever you like. FREE, OR UNLIMITED ONCE Letterseal is free to download. The free version keeps up to 5 sealed letters at a time, with 2 papers, 2 wax colors, up to 2 photos per letter and one surprise date. Letters for someone else (words and photos) are free and don't count toward the 5. "This year's letter" is free too. Letterseal Unlimited is a one-time purchase, not a subscription. It unlocks unlimited sealed letters, all 6 papers and 8 wax colors plus your initials pressed into the seal, video letters (up to 3 minutes) and voice letters (up to 5 minutes), up to 6 photos per letter and unlimited surprise dates. AN HONEST NOTE Letterseal keeps a letter closed until its date. That is the whole ritual. It is a sealed envelope, not a bank vault: please don't use it for passwords or anything that must stay hidden from someone holding your unlocked iPhone. If you truly need to, you can open a letter early, but only on purpose.
Screenshots
Verdict
The clearest difference is in-app purchases: Time Capsule at none against Letterseal's 1. Time Capsule also leads on update cadence (every 3 days vs every 5 weeks) and device support (3 vs 1). Letterseal's advantage is ads (none vs shown). On price there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Letterseal sells 1 one-off in-app purchase. Time Capsule asks for nothing beyond the download.
Time Capsule ships an update every 3 days, Letterseal every 5 weeks. Both last shipped on October 28, 2026.
| Parameter | Time Capsule | Letterseal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days ā better | Every 5 weeks |
| Ads | Yes | No ā better |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, iPod ā better | iPhone |
| Requires iOS | 13.0 ā better | 17.0 |
| Further details ā not scored | ||
| Size | 25 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Subin Jo | MURATHAN ORAN |
In-app purchases
Time Capsule
No in-app purchases
Letterseal
- Letterseal Unlimited$5.99









