Letterbox vs ReadAura
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Letterbox
Send personalized digital "Open When" letters to friends and loved ones. Customize letters with colors, fonts, and images to create unique messages for any occasion. Perfect for long-distance relationships and thoughtful gestures.
- Send personalized digital letters
- Customize letter colors and fonts
- Attach images to letters
- Create "Open When" themed letters
- Suitable for friends and partners
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Letterbox lets you send cute letter boxes to your friends and/or partner. You can customize letters by choosing their colors and fonts or by attaching an image. Use letterbox to make "Open When" letters for your loved ones. You can also pair with your partner to continue sending each other letters and getting more func couples features 3> Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
ReadAura
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ReadAura helps you build a consistent reading habit. Add books, log the current page in seconds, keep your reading streak alive, and watch your 28-day heatmap fill up as you read. ReadAura is built for readers who want progress without social noise: - private book library; - fast current-page logging; - flexible library search, filters, and sorting; - System, Light, or Dark appearance; - optional ISBNs for your books; - portable export of your books, reading history, and available covers; - current and best reading streaks; - 28-day reading activity heatmap; - simple reading statistics; - local reading reminders; - optional book covers or clean placeholders; - no account required; - offline-first by design; - streak protection for one eligible missed reading day; - possible duplicate-book suggestions before adding another copy; - add books already in progress and decide whether existing pages count toward today; - celebrations for finished books and new personal streak records; - Aura Plus: browse weekly, monthly, and yearly reports, explore long-term reading habits and detailed 28-day activity, see your most-read author, and estimate finish dates from your recent pace; - Free: add up to 10 books. Aura Plus: unlimited books and personal reading insights. ReadAura is not a social network or a heavy book catalog. It is a simple, beautiful reading tracker for people who want to read more often and see their progress.
Screenshots
Verdict
The clearest difference is update cadence: ReadAura at every 10 days against Letterbox's every 6 months. ReadAura also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17). On price, ads and in-app purchases 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. Letterbox sells 3 one-off in-app purchases and ReadAura sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Letterbox ships an update every 6 months, ReadAura every 10 days. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.
| Parameter | Letterbox | ReadAura |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 6 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17 | 15.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 135 MB |
| Age rating | 4+ | 4+ |
| Developer | Sajjad Alhusseini | Oleh Vasylyshyn |
In-app purchases
Letterbox
- Special Box$1.99
- Cute Box$3.99
- Love Box$5.99
ReadAura
- ReadAura Plus Monthly$2.991 Month
- ReadAura Plus Yearly$24.991 Year









