Calc vs Zero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calc
This app offers a high-precision scientific calculator with over 50 digits of accuracy. It supports advanced mathematical functions, complex arithmetic, and programmable features for derivatives, integrals, and root finding.
- High-precision calculations (50+ digits)
- Extensive mathematical functions
- Programmable features
- Complex arithmetic
- Graphing capabilities
- Derivative and integral calculation
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Calc-50 is a high-precision scientific graphing RPN calculator. It carries over 50 digits of accuracy and has a large number of mathematical functions, including trig and hyperbolic functions and their inverses, and math special functions such as gamma, beta, psi, exponential integral, sine, cosine, and log integrals, Bessel functions, and more. It is programmable, with functions that take user functions and find derivatives, integrals, function max/min, and roots. Calc-50 also provides complex arithmetic and elementary functions.
Zero
This tool helps calculate the optimal strategy allocation for two players in a zero-sum game. Input your strategies, and it will determine the frequency each should be used for sports, politics, or military scenarios.
- Zero-sum game strategy calculation
- Optimal allocation determination
- Supports sports, politics, military
- Frequency of strategy employment
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This is a zero-sum game calculator. It is used to help determine the proper allocation of a finite list of strategies for two players in a zero-sum game (e.g. sports games, political campaigns, military operations). You provide the inputs, and the calculator will determine how often each strategy should be employed.
Screenshots
Verdict
The clearest difference is review sentiment: Zero at 100% against Calc's 50%. Zero also leads on rating (5.0 vs 3.7). Calc's advantage is update cadence (every 10 months vs every 22 months). On price, ratings volume, ads 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.
Zero holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 50% of Calc's written reviews are positive against 100% of Zero's.
Calc ships an update every 10 months, Zero every 22 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Calc | Zero |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 10 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 38 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | David Smith | Troy McCurry |
Customer experience
Calc
Zero
In-app purchases
Calc
No in-app purchases
Zero
No in-app purchases
