Mail Princess vs LETTRIX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mail Princess
Send checks, letters, postcards, and faxes directly from your mobile device. This app allows you to mail documents and checks as easily as sending an email, streamlining your business and personal correspondence.
- Send checks by mail from phone
- Mail letters and postcards
- Fax documents
- Automated mailing and faxing
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Automated Check and Document Mailing & Faxing. Send checks by mail. Just like a check from your bank account, but from your phone. Also, take pics and send letter, postcards, or fax.
LETTRIX
Create and send personalized letters and postcards from your device. The service prints, stamps, and mails your custom messages to any US destination, with options for scheduling future delivery.
- Create custom letters and postcards
- Add photos and signatures
- Print and mail to US destinations
- Schedule future mailings
- Multiple templates available
- Saved recipient lists
- Upload documents/images
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LETTRIX allows you to create a letter or postcard from within the app, then LETTRIX prints and sends it to any US destination. You can send letter, postcard etc with fully customized (i.e you can add your own photos and signature ) ,which will be sent printed and sent to your desired location. User can create from anywhere in the world, and we send it from the USA today or whenever you schedule it to go in the mail! When LETTRIX can help you... • An email just doesn't do the trick! • You don't have time to prepare a letter or run to the post office/box • You want to send a custom postcard to one or more friends or family members • You want to mail a hard copy of a document or image via our UPLOAD function. Our US team prints, stuffs (letters) in an envelope, buys stamps, applies the stamps to the letter or postcard, and places it in the US mail! You also have the option to schedule your item to be sent at a future date via our scheduler. Create and send letter and beautiful postcards to your friends, family or anyone else you would like to make feel special.Send a letter to your child on their 5th birthday, 4 years from now! Send your children a birthday note by writing it now while its on your mind, and scheduling it for mailing for his or her birthday in the future. Letters: Choose from our various templates, write your letter, add your recipients, and we do the rest! You can even send the same letter to multiple recipients! Postcards: Create custom postcards with your photo's, then we print, stamp and mail them from our US location via USPS. And just like letters, you can send your postcards to multiple recipients all at the same time! We remove the hassle of mailing! No more searching for where to buy stamps. No more searching for a mailbox. Do it all from your smartphone or tablet! Key features of Lettrix App: • Postcards are printed on thick, 4x6 photo paper • Letters are printed on superior business quality white, flat paper (not linen) with a matching envelope • Your real signature on every item • Delivered in the US from anywhere in the world! • Dropped in the mail the same or next day • Sign letters and postcards with your finger! • Saved recipient list for sending quickly • Multiple templates to fit the message! • Save drafts • Access your history of items sent
Screenshots
Verdict
The clearest difference is rating: Mail Princess at 3.3 against LETTRIX's 2.8. Mail Princess also leads on review sentiment (71% vs 50%) and iOS requirement (11.0 vs 14.0). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.
Mail Princess holds the better App Store score, 3.3 against 2.8. Both are backed by a comparable volume of ratings — 7 and 13 respectively. Written reviews point the same way: 71% of Mail Princess's written reviews are positive against 50% of LETTRIX's.
Mail Princess ships an update every 3 months, LETTRIX every 2 months. Both last shipped on November 2, 2026.
| Parameter | Mail Princess | LETTRIX |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (7 ratings) — better | 2.8 (13 ratings) |
| Positive reviews | 71.4% of reviews — better | 50.0% of reviews |
| Number of ratings | 7 | 13 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 18 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Agency Enterprise, LLC | Neovix, Inc. |
Customer experience
Mail Princess
LETTRIX
In-app purchases
Mail Princess
No in-app purchases
LETTRIX
No in-app purchases






