Comparison

Keepstone vs LockCapsule

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

Head to head
About

Keepstone

Features
Read full description

Keepstone is your private offline diary for photos, voice notes and letters to your future self. Capture a moment now, seal it until a date you choose, and return to it when the time comes. WRITE IN YOUR OWN WAY Create memories with rich text, up to 10 photos, and voice notes. Organize entries with tags and choose the themes and typography that make your diary feel like yours. LET TIME KEEP A SECRET Seal a memory or letter until a date you choose. Its content stays hidden in the app until that date, while its title helps you recognize it in the Vault. Previously sealed memories show their unlock date once opened. Protect access to the Vault with Face ID or Touch ID on supported devices. BACK UP AND SHARE Export your diary as an encrypted, password-protected .kstone file. Keep a copy somewhere safe or share an individual memory with someone you trust. Imported shared memories remain read-only, and sealed copies keep their opening date. YOUR JOURNAL, ON YOUR DEVICE No account is needed for journaling. Your memories are stored locally, and writing and reading work offline. Keepstone does not automatically sync your diary between devices. Export a backup before changing devices or uninstalling the app, and keep its password safe. OPTIONAL SUPPORTER FEATURES A one-time Supporter purchase unlocks additional themes, typography, detailed journal statistics, and PDF export for open memories. Voice recordings remain playable in Keepstone and are not embedded in PDFs. No subscription is required. Available in English, Spanish, French, Japanese, Simplified Chinese, and Portuguese.

About

LockCapsule

Features
Read full description

Some memories are too good to scroll past and forget. Lock Capsule lets you seal your photos in a digital time capsule and rediscover them exactly when you choose: next summer, in five years, or a decade from now. Pick your favorite moments, lock them away, and let time do the rest. When the countdown ends, we'll send you a notification and your capsule is ready to open. FEATURES: • Create a capsule in seconds: give it a name, write a note, and add your photos. • Choose how many memories to seal and pick your own cover photo. • Set the exact day it unlocks, from a few months to 25 years away. • Get notified the moment your capsule is ready to open. • Relive your memories and share them as a beautiful image. • Keep everything organized in your vault with Filling, Sealed, and Opened sections. • Your memories stay on your device. No account, no cloud, no ads. PERFECT FOR: • Birthdays, anniversaries, and celebrations • Messages to your future self • Travel photos you want to relive later • Milestones such as graduations, new babies, and big moves • Couples and friends who want to preserve shared memories HOW IT WORKS: 1. Create a new capsule and give it a name. 2. Add your photos and a personal note. 3. Choose when you want it to unlock. 4. Seal it and wait until it's time to open.

Screenshots

Keepstone4 screens
LockCapsule4 screens

Verdict

The call

The clearest difference is in-app purchases: LockCapsule at none against Keepstone's 1. Keepstone's advantage is update cadence (weekly vs every 3 months) and device support (3 vs 1). On price, ads and iOS requirement 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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Keepstone sells 1 one-off in-app purchase. LockCapsule asks for nothing beyond the download.

UpkeepUpdate frequency

Keepstone ships an update weekly, LockCapsule every 3 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Keepstone versus LockCapsule: the parameters behind the verdict, then further details
ParameterKeepstoneLockCapsule
PriceFreeFree
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size21 MB50 MB
Age rating4+4+
DeveloperPablo SilvaBurak Can INCE

In-app purchases

1 purchases

Keepstone

One-time1
  • Keepstone Supporter$0.99
None

LockCapsule

No in-app purchases

Questions

Is Keepstone free?
Keepstone is free to download, with in-app purchases available.
Is LockCapsule free?
LockCapsule is free to download, with no in-app purchases.
Do Keepstone or LockCapsule have ads?
Neither Keepstone nor LockCapsule shows ads.
Which is updated more often, Keepstone or LockCapsule?
Keepstone ships an update weekly, and LockCapsule every 3 months. Most recently, Keepstone was updated on November 5, 2026 and LockCapsule on October 31, 2026.

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