Memo Calculator vs Purrer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Memo Calculator
This app seamlessly integrates a memo pad with a calculator, allowing for automatic calculations as you type. Store arithmetic expressions, utilize parentheses mode, and easily reorder memo lines. It's designed for versatile use in managing finances, shopping lists, and more.
- Integrated memo pad and calculator
- Automatic calculation of totals
- Store light arithmetic expressions
- Parentheses mode for complex calculations
- Reorder memo lines by long-pressing
- Multiple color modes
Read full descriptionHide full description
Memo Calculator is a useful application that combines a memo pad and a calculation function. A UI similar to notepad and input numbers will automatically calculate the total. It is possible to store light arithmetic expressions, If you jump one line and type on the next line, you can automatically use parentheses mode. You can also move the memo line by long-pressing the left side, so you can manage it conveniently. - Memo and calculation function - Store light arithmetic expressions - Parentheses mode - move memo row - Various color modes Business, Shopping, Travel Expenses, Budget, Household Book, Finance, Accounting, Pocketbook, Shopping It can be used for memo and data management, and for various purposes. thank you Think Human Designed by SuperDG
Purrer
A virtual cat petting app designed for relaxation and stress relief. Choose your favorite cat breed and enjoy calming purrs and petting anywhere, anytime. It's a hypoallergenic pocket companion for moments of calm.
- Virtual cat petting
- Choose cat breeds
- Relaxation and stress relief
- Pocket-sized companion
- Use anywhere
Read full descriptionHide full description
Pet, purr, and relax… no hairballs Purrer is a virtual cat petting app, a simple way to relax and wind down with pets and purrs anywhere you go. A moment of calm while traveling, at work, school, or waiting on hold. Choose your favorite cat breed and pet your purring pocket pet. Carry your hypoallergenic pocket cat wherever you go. • Choose your favorite cat breed and pet until calm • Use Purrer anywhere, between tasks or before sleep for a quick reset1 • Petting and purring cue a natural relaxation response, a physiological counter to stress2 • Pet, purr, and unwind3 with your virtual pocket cat • All purrs, no scratches, no litterbox
Screenshots
Verdict
The clearest difference is ads: Purrer at none against Memo Calculator's shown. Purrer also leads on monetization model (free vs ad-supported). Memo Calculator's advantage is ratings volume (16 vs 2). On price, rating, update cadence 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Memo Calculator against 5.0 for Purrer. That said, the two scores are not equally well evidenced: Memo Calculator has 16 ratings behind it against 2, so its average is the more settled of the two.
Memo Calculator ships an update weekly, Purrer every 5 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | Memo Calculator | Purrer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (16 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 16 — better | 2 |
| Update frequency | Weekly | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | SuperDG Inc. | Reason Interactive |
Customer experience
Memo Calculator
Purrer
In-app purchases
Memo Calculator
No in-app purchases
Purrer
No in-app purchases









