zaCalc2 vs hpstr
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.
hpstr
Find local happy hours, events, and shows at various venues. Explore different neighborhoods to discover new spots and activities.
- Discover happy hours
- Find local events
- Locate shows
- Explore neighborhoods
- Discover new spots
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discover happy hours, events, and shows at great spots in different neighborhoods
Screenshots
Verdict
The clearest difference is rating: hpstr at 5.0 against zaCalc2's 4.7. hpstr also leads on update cadence (every 2 months vs every 4 months). zaCalc2's advantage is device support (4 vs 2) and iOS requirement (15.6 vs 17). On price, review sentiment, ratings volume 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.
hpstr holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
zaCalc2 ships an update every 4 months, hpstr every 2 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.
| Parameter | zaCalc2 | hpstr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17 |
| Further details — not scored | ||
| Size | 6 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | STEVEN HOLL | Bahram Atefi |
Customer experience
zaCalc2
hpstr
In-app purchases
zaCalc2
No in-app purchases
hpstr
No in-app purchases
Questions
Is zaCalc2 free?
Is hpstr free?
Which has better reviews, zaCalc2 or hpstr?
Do zaCalc2 or hpstr have ads?
Which is updated more often, zaCalc2 or hpstr?
Other comparisons
