SIMSON CASE vs Letter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SIMSON CASE
Connect your phone case to customize dynamic watch faces. Design unique animated watch faces to express your style.
- Connect phone case
- DIY dynamic watch faces
- Customize animated designs
- Personalize watch face style
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与手机壳连接,可diy各种动态表盘。
Letter
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Briefo: Letter Write, Post Mail makes it simple to create a letter digitally and send physical mail worldwide. Write and customize your document, choose a template, add a signature, select print and delivery options, and track your order from one place. Whether you want to send a personal letter, card, document, or other written correspondence, Briefo combines a practical letter editor with physical postal delivery. Prepare your mail without printing pages, preparing an envelope, or visiting a mailbox yourself. WRITE AND CUSTOMIZE YOUR LETTER Create a letter with the editor and customize your text before sending. Choose a template, prepare a multi-page letter, add page numbers when needed, or save your work as a draft and return later. Templates can help with common personal and everyday correspondence, including cancellation notices, complaints, requests, authorizations, formal notices, and personal letters across Europe and other destinations worldwide. ADD YOUR SIGNATURE Personalize your correspondence by uploading your signature as an image or drawing a hand signature directly for your letter. SEND PHYSICAL MAIL WORLDWIDE Briefo turns the letter you prepare digitally into physical mail for delivery to your selected destination. Save sender and recipient details to make preparing future letters more convenient. Briefo can be used for personal mail and correspondence addressed to military or army recipients, as well as jail, prison, or inmate correspondence where applicable. Institutions and destinations may have their own incoming mail rules, and Briefo does not guarantee acceptance or delivery by a particular recipient or institution. TRACK YOUR ORDER Use the postal tracker to track your order and receive order notifications. Keep sent letters organized and view your letter list inside the app. Features: * Write and customize letters * Select a letter template * Create multi-page letters and add page numbers * Upload a signature image or draw a hand signature * Choose black-and-white or color printing * Select available delivery and layout options * Save letters as drafts * Save recipients and senders * Track orders with the postal tracker * Receive order notifications * Export letters as PDF * Sync across devices * Send physical mail worldwide FREE ACCESS Free users can view their letter list and create and save recipient, sender, and signature information. PREMIUM ACCESS Sending physical letters requires sufficient credits. Credits can be purchased through in-app purchases. The required credits for each letter are calculated instantly based on that order, including page count, destination, delivery options, and layout options. You can see the calculated credit requirement before sending. IMPORTANT DISCLAIMER Briefo is a service for preparing and sending physical correspondence. Delivery and acceptance may depend on the destination, postal services, recipient, institution, and applicable mail rules. References to military, army, jail, prison, or inmate mail describe possible correspondence use cases and do not imply affiliation with or endorsement by any government, military, correctional institution, postal authority, or other third party. Privacy Policy: getbriefo.com/en/privacy Terms of Use: getbriefo.com/en/terms Support: support@getbriefo.com
Screenshots
Verdict
The clearest difference is in-app purchases: SIMSON CASE at none against Letter's 6. SIMSON CASE also leads on iOS requirement (12.0 vs 16.4). On price, update cadence, 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. Letter sells 6 one-off in-app purchases. SIMSON CASE asks for nothing beyond the download.
SIMSON CASE ships an update weekly, Letter every 5 days. The most recent releases landed on September 29, 2026 and September 28, 2026 respectively.
| Parameter | SIMSON CASE | Letter |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (7 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 228 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen United Power Technology Co., Ltd. | VUNYO |
In-app purchases
SIMSON CASE
No in-app purchases
Letter
- Credit$1.99
- Credit$4.99
- Credit$6.99
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- Credit$9.99
- Credit$19.99
- Credit$49.99









