zaCalc2 vs Perfect Roaster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
zaCalc2
This app assists in calculating precise pizza dough ratios, including sourdough or yeast amounts. It offers advanced features like yeast regression formulas based on fermentation time and temperature, and scales toppings for any pizza size. Users can also customize their own recipes and ratios.
- Pizza dough ratio calculation
- Sourdough/yeast amount calculation
- Yeast regression formulas
- Topping scaling by weight
- Customizable recipes and ratios
- Apple Watch support
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zaCalc is an app to help calculate ratios for pizza dough and making pizzas, including the amount of sourdough or yeast to use. Though there are other pizza or dough calculators, this app uses yeast regression formulas to guide you with the right amount of yeast to use, based on the time you have to ferment the dough and the temperature of your room. It also supports the Apple Watch, so that if you need to lookup amounts you won't get flour all over your phone. It also can scale the optimal toppings, based on weight, to whatever size pizza you plan to make. Finally, you can customize the recipes and ratios if you have some that you prefer.
Perfect Roaster
Effortlessly roast various meats on your stovetop with minimal supervision. Select your meat type and desired doneness, and receive an alarm for perfectly cooked results.
- Roast various meat types
- Select preferred doneness
- Automated cooking alarms
- Stovetop roasting guidance
- Minimal supervision required
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The Perfect Roaster’s app lets you roast all type of meats over your kitchen stove with only few clicks and almost no supervision! Select the type of meat you want to roast (beef, chicken, pork, lamb, duck, etc), your preferred doneness, and voilà! The app will set an alarm for the juiciest and crispiest roast you can get at home!
Screenshots
Verdict
The clearest difference is rating: Perfect Roaster at 5.0 against zaCalc2's 4.7. zaCalc2's advantage is update cadence (every 4 months vs every 11 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model 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.
Perfect Roaster holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
zaCalc2 ships an update every 4 months, Perfect Roaster every 11 months. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.
| Parameter | zaCalc2 | Perfect Roaster |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 4 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 6 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | STEVEN HOLL | Cristobal Grana Samanez |
Customer experience
zaCalc2
Perfect Roaster
In-app purchases
zaCalc2
No in-app purchases
Perfect Roaster
No in-app purchases
Questions
Is zaCalc2 free?
Is Perfect Roaster free?
Which has better reviews, zaCalc2 or Perfect Roaster?
Do zaCalc2 or Perfect Roaster have ads?
Which is updated more often, zaCalc2 or Perfect Roaster?
Other comparisons
