According to the Official UK App Store Weekly Charts for the week ending February 5, the Tom's Love Letters app positioned second in the list of free iPhone apps, and fourth on the iPad list.
The app, developed by Out Fit 7, features talking cat Tom and his feline love interest Angela. Users can send off a postcard to their Valentine featuring the cute cats.
Ahead of Valentines Day on February 14, another app posted number 10 on the iPad free chart from MagicSolver, showcasing the "best 14 free apps for your love".
Imangi Studios' popular game Temple Run retained the top spot on the free iPhone apps, and also unseated Apple's iTunes U app from the top of the free iPad chart.
1. Temple Run - Imangi Studios , LLC.
2. Tom's Love Letters - Out Fit 7 Inc.
3. Top Gear: Stunt School HD - BBC Worldwide.
4. Sliding Tiles - Grabarchuk Puzzles, Kft.
5. LEGO App 4+ - The LEGO Group.
6. BBC iPlayer - Media Applications Technologies Ltd.
7. Skype for iPad - Skype Software Sarl.
8. Sky Sports News for iPad - BSkyB.
9. ITV Player - ITV.
10. Valentines Day 2012: The Best 14 Free Apps For Your Love - MagicSolver.com Ltd.
1. Kingdom Rush - Armour Games
2. Inspire Pro - Paint, Draw & Sketch - KiwiPixel
3. NFL Flick Quarterback HD - Full Fat
4. Pages - Apple
5. Weather+ - International Travel Weather Calculator
6. Football Manager Handheld 2012 - Sega
7. The Night Sky - iCandi Apps
8. Catchphrase for iPad - Deluxe Digital Studios London
9. Weather Live - Apalon
10. Reckless Racing 2 - Polarbit
1. Temple Run - Imangi Studios
2. Ski On Neon - Esoteric Development
3. Sliding Tiles - Grabarchuk Puzzles
4. Tom's Love Letters - Out Fit 7
5. The Secret Of Grisly Manor - Fire Maple Games
6. Monster Galaxy: The Zodiac Islands - Gala Interactive
7. Top Gear: Stunt School - BBC Worldwide
8. GlassPong - SIGMA Communications Inc
9. Bling My Screen - Tick Tock Apps
10. BBC iPlayer - Media Applications Technologies
1. WhatsApp Messenger - WhatsApp
2. The Lost City - Fire Maple Games
3. Celebalike - Ventutec
4. Fruit Ninja - Halfbrick Studios
5. Theory Test - Driving Test Success - Focus Multimedia
6. Hatchi - Portable Pixels
7. NFL Flick Quarterback - Full Fat
8. Keep Calm and Carry On - Back Bay Bytes
9. Angry Birds - ClickGamer.com
10. The Night Sky - iCandi Apps