Nostash vs Future Letter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nostash
This extension allows Safari users to sign Nostr events directly within their browser. It adheres to the NIP-07 specification, enabling secure interactions with the Nostr network. Compatible with Mac, iPhone, and iPad.
- Nostr signing functionality
- NIP-07 specification compliance
- Safari browser extension
- Secure event signing
- Cross-device compatibility
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Nostash is a Nostr signing extension for Safari that follows the NIP-07 specification.
Future Letter
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Time SMS lets you write messages today and deliver them in the future. Send a normal SMS notification with a private link, so recipients can open the full message page when the time arrives. Use it for love notes, birthday wishes, anniversary memories, personal reminders, future letters, and moments you do not want to forget. You can create future messages with text and rich content such as images, voice, video, and documents. Choose the delivery time and time zone, preview the message, and schedule it with points. Perfect for: Future letters to yourself Birthday and anniversary wishes Long-distance love messages Private reminders Memories, photos, voice, and video Important dates and personal moments Time SMS is designed for private, meaningful delayed messages, delivered at the right time. Time SMS uses points for scheduling future messages. Points are consumable in-app purchases and are deducted only when a message is successfully scheduled.
Screenshots
Verdict
The clearest difference is in-app purchases: Nostash at none against Future Letter's 3. Nostash also leads on update cadence (weekly vs monthly). Future Letter's advantage is iOS requirement (13.0 vs 18.0). On price, ads and device support 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
Both are free to download. Future Letter sells 3 one-off in-app purchases. Nostash asks for nothing beyond the download.
Nostash ships an update weekly, Future Letter monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Nostash | Future Letter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Terry Yiu | 锡球 刘 |
In-app purchases
Nostash
No in-app purchases
Future Letter
- Recharge 5 Points$0.99
- Recharge 18 Points$2.99
- Recharge 50 Points$7.99
