Comparison

Letterbox vs ReadAura

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

Head to head
About

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.

Highlights
  • Send personalized digital letters
  • Customize letter colors and fonts
  • Attach images to letters
  • Create "Open When" themed letters
  • Suitable for friends and partners
Features
Read full description

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/

About

ReadAura

Features
Read full description

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

Letterbox4 screens
ReadAura4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 6 level
Letterbox versus ReadAura: the parameters behind the verdict, then further details
ParameterLetterboxReadAura
PriceFreeFree
Rating4.5 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 6 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS1715.0 — better
Further details — not scored
Size21 MB135 MB
Age rating4+4+
DeveloperSajjad AlhusseiniOleh Vasylyshyn

In-app purchases

3 purchases

Letterbox

One-time3
  • Special Box$1.99
  • Cute Box$3.99
  • Love Box$5.99
2 purchases

ReadAura

Subscriptions2
  • ReadAura Plus Monthly$2.991 Month
  • ReadAura Plus Yearly$24.991 Year

Questions

Is Letterbox free?
Letterbox is free to download, with in-app purchases available.
Is ReadAura free?
ReadAura is free to download, with in-app purchases available.
Do Letterbox or ReadAura have ads?
Neither Letterbox nor ReadAura shows ads.
Which is updated more often, Letterbox or ReadAura?
Letterbox ships an update every 6 months, and ReadAura every 10 days. Most recently, Letterbox was updated on October 13, 2026 and ReadAura on October 8, 2026.

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