Formulize vs Promo Buddy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Formulize
Create and manage personalized calculation formulas with this intuitive app. It supports basic arithmetic, custom formulas, and dynamic variables, making complex math accessible for students and professionals alike.
- Custom formula creation and saving
- Basic arithmetic operations
- Intuitive user interface
- Dynamic variable input
- Operator precedence support
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Formulize is a user-friendly calculator app designed to help you create and manage custom formulas with ease. Whether you’re a student, professional, or just need a reliable tool for your everyday calculations, Formulize makes complex math simple. Key Features: • Custom Formulas: Easily design and save your own formulas for quick access. • Basic Calculations: Handle fundamental arithmetic operations with support for addition, subtraction, multiplication, and division. • Intuitive Interface: Enjoy a clean, easy-to-use interface that simplifies the process of creating and managing your formulas. • Variable Support: Input variables to make your calculations dynamic and flexible. • Operator Precedence: Ensure accurate results with built-in support for operator precedence.
Promo Buddy
Easily calculate discounts on purchases by entering the original price and applying one or two discounts. See your final price and savings instantly in your preferred currency, whether it's your device's default or one chosen for travel. Shop smarter and save time with this fast, lightweight tool.
- Calculate discounts
- Apply one or two discounts
- View final price
- Track savings
- Select preferred currency
- Automatic device currency detection
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What will you actually pay? Promo Buddy calculates the final price after one or two discounts, with optional tax. Check an offer in seconds before you buy. From clearance racks to online sales, skip the mental math. Enter the original price, apply a discount and see your final price and savings at a glance. CALCULATE ANY DISCOUNT Choose a quick 10%, 20%, 30% or 50% discount, or enter your own percentage. Adjust the numbers to check another offer in seconds. STACK TWO DISCOUNTS An extra 20% off an already reduced item? Add a second discount and let Promo Buddy apply the reductions one after the other to calculate your final price and savings. INCLUDE TAX Enter your tax rate to see the final price, discounts and tax included. YOUR CURRENCY, READY TO GO Promo Buddy automatically selects a currency based on your device’s region. Choose another whenever you like and save your favorites for quick access. MADE FOR QUICK PRICE CHECKS A clear layout, handy percentage shortcuts and an easy-to-read result keep the focus on the numbers you need. No account or sign-up required. Add Promo Buddy to Control Center to quickly open the calculator while you shop. REMOVE ADS, ONCE Use Promo Buddy with ads, or remove them with a one-time in-app purchase. No subscription. Check the price. See the savings. Decide if it’s worth it.
Screenshots
Verdict
The clearest difference is rating: Promo Buddy at 5.0 against Formulize's 4.5. Promo Buddy also leads on monetization model (ad-supported vs free with in-app purchases). Formulize's advantage is ads (none vs shown). On price, ratings volume, in-app purchases 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
Both are free to download. Formulize sells 1 one-off in-app purchase and Promo Buddy sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Promo Buddy holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
| Parameter | Formulize | Promo Buddy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | — | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.5 — better | 17.6 |
| Further details — not scored | ||
| Size | 30 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Morten Gregersen | Chloe Agostini |
Customer experience
Formulize
Promo Buddy
In-app purchases
Formulize
- Formulize Pro$2.99
Promo Buddy
- Remove Ads$1.99









