# Quantum Zenith vs Discount Calculator Buddy

The clearest difference is iOS requirement: Quantum Zenith at 13.0 against Discount Calculator Buddy's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Quantum Zenith ships an update fortnightly, Discount Calculator Buddy every 2 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Quantum Zenith | Discount Calculator Buddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/quantum-zenith/id1613047597/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Free | — |
| Size | 62 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cyberspace Limited](https://appshunter.io/developer/1076614707) | [Alperen Sarısan](https://appshunter.io/developer/1593303024) |

## What reviewers say

### Quantum Zenith

[App page](https://appshunter.io/ios/app/quantum-zenith/id1613047597)

Manage and build your investment portfolio with access to diverse financial products. Explore options like mutual funds, stock trading, and savings bonds to grow your wealth.

**Highlights:** Investment account management, Mutual funds, Stock trading, FBN Savings Bond, Trust Funds

**Features:** macOS Compatibility

**In-app purchases:** none


### Discount Calculator Buddy

[App page](https://appshunter.io/ios/app/discount-calculator-buddy/id6737142967)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quantum Zenith free?

Quantum Zenith is free to download, with no in-app purchases.

### Is Discount Calculator Buddy free?

Discount Calculator Buddy is free to download, with no in-app purchases.

### Do Quantum Zenith or Discount Calculator Buddy have ads?

Neither Quantum Zenith nor Discount Calculator Buddy shows ads.

### Which is updated more often, Quantum Zenith or Discount Calculator Buddy?

Quantum Zenith ships an update fortnightly, and Discount Calculator Buddy every 2 weeks. Most recently, Quantum Zenith was updated on October 30, 2026 and Discount Calculator Buddy on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*