Comparison

Write a letter vs IsiSafe

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

Head to head
About

Write a letter

Create professional letters quickly and easily. Save them as PDFs for emailing, printing, or sharing. Customize your letters with formatting, templates, and fonts to match your style.

Highlights
  • Professional letter creation
  • PDF export
  • Email, print, and share options
  • Customizable templates
  • Text formatting
  • Signature integration
  • Sender address management
Features
Read full description

With this app you can write professional letters in just a few minutes. Your letter is saved as a PDF and can be sent by email, printed, or shared via AirDrop at any time. With your signature if you wish. It's that simple: create a sender, enter the recipient, write the letter, done. Design your letters entirely to your own style. The editor supports text formatting such as Bold, Underline and more, so you can highlight important content precisely. Choose between a classic and modern template or create your own letter template with the template generator. Three built-in fonts as well as all fonts installed on your device are available for display. A4 and US Letter are supported. You can save any number of sender addresses, for example private and business, and simply select the right one when writing. Feedback and suggestions for improvement are always welcome. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

IsiSafe

Read full description

IsiSafe is your private vault for everything that truly needs protection: passwords, logins, bank and account data, confidential notes, and more. Neatly organized, lightning-fast to find – and secured through modern on-device encryption. Why IsiSafe? • Instantly clear: Bank, login, or note – all in tidy type blocks. • Custom organization: Name sections freely and sort them via drag & drop. • Work fast: Double-tap to edit, swipe to favorite or delete. • Secure unlock: Optional Face ID / Touch ID. • Local encryption: Exports can be end-to-end encrypted if desired. • Offline & private: No account required, no cloud dependency. Highlights • Smart lists: “All” and “Favorites” automatically sorted by type (Bank → Login → Note). • Custom sections: Name areas freely (e.g. “Insurance”, “Family”, “Work”) and sort manually. • Quick copy: One tap copies values (with IBAN/phone format clean-up). • Pro mode: For power users – delete without confirmation if enabled. • Export/Import: Secure backups as JSON; optionally encrypted (.json.enc). • Share/Print: Export selected entries as plain text – ideal for emergency folders. • No subscription: One-time purchase, lifetime use. Security & Privacy • All sensitive data is stored locally. • Optional biometric lock (Face ID / Touch ID). • Exports can be strongly encrypted (AES-GCM). • No hidden telemetry – you stay in control. Pricing • 10-day free trial. • Then full version via one-time in-app purchase. • Purchases can be restored anytime. Support Questions or feedback? Open the user manual in-app under Settings → Help.

Screenshots

Write a letter4 screens
IsiSafe3 screens

Verdict

The call

The clearest difference is price: Write a letter at Free against IsiSafe's $1.99. IsiSafe's advantage is in-app purchases (none vs 3) and update cadence (every 4 days vs every 3 months). On 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

CostPrice · In-app purchases · Ads · Monetization

Write a letter is free to download; IsiSafe costs $1.99 up front. Write a letter sells 3 in-app purchases, starting at $2.99 per month. IsiSafe asks for nothing beyond the download.

UpkeepUpdate frequency

Write a letter ships an update every 3 months, IsiSafe every 4 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
Write a letter versus IsiSafe: the parameters behind the verdict, then further details
ParameterWrite a letterIsiSafe
PriceFree — better$1.99
Rating3.6 (19 ratings) — better—
Positive reviews26.4% of reviews—
Number of ratings19 — better—
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017.6 — better
Further details — not scored
Size40 MB7 MB
Age rating4+4+
DeveloperJan-Hendrik DamerauKlaus Gutsch

In-app purchases

3 purchases

Write a letter

Subscriptions2
  • Monthly Premium$2.991 Month
  • Annual Premium$22.991 Year
One-time1
  • Lifetime Premium$39.99
None

IsiSafe

No in-app purchases

Questions

Is Write a letter free?
Write a letter is free to download, with in-app purchases available.
Is IsiSafe free?
IsiSafe costs $1.99, with no in-app purchases.
Do Write a letter or IsiSafe have ads?
Neither Write a letter nor IsiSafe shows ads.
Which is updated more often, Write a letter or IsiSafe?
Write a letter ships an update every 3 months, and IsiSafe every 4 days. Most recently, Write a letter was updated on October 10, 2026 and IsiSafe on October 7, 2026.

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