# BRISTOL vs PROG_CALC

The clearest difference is in-app purchases: PROG_CALC at none against BRISTOL's 1. PROG_CALC also leads on update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BRISTOL sells 1 one-off in-app purchase. PROG_CALC asks for nothing beyond the download.

BRISTOL ships an update monthly, PROG_CALC every 2 weeks. The most recent releases landed on October 25, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BRISTOL | PROG_CALC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/prog-calc/id1640426491/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 3 MB | 78 MB |
| Requires iOS | 14.7 | **13** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Britton](https://appshunter.io/developer/1509732288) | [嘉欣 胡](https://appshunter.io/developer/1640395440) |

## What reviewers say

### BRISTOL

[App page](https://appshunter.io/ios/app/bristol-calculator/id1509732291)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| bristol calculator storage | $3.99 | one-time |


### PROG_CALC

[App page](https://appshunter.io/ios/app/prog-calc/id1640426491)

This app offers a programmable calculator with two distinct modes for daily computing and advanced mathematical functions. It supports system conversions between binary, octal, decimal, and hexadecimal, and allows for variable storage and code sharing.

**Highlights:** Basic and advanced calculation modes, Syntax parser, Variable storage and editing, Binary, octal, decimal, hexadecimal conversion, Built-in code examples, Code sharing via QR code or file

**In-app purchases:** none


## Frequently asked questions

### Is BRISTOL free?

BRISTOL is free to download, with in-app purchases available.

### Is PROG_CALC free?

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

### Do BRISTOL or PROG_CALC have ads?

Neither BRISTOL nor PROG_CALC shows ads.

### Which is updated more often, BRISTOL or PROG_CALC?

BRISTOL ships an update monthly, and PROG_CALC every 2 weeks. Most recently, BRISTOL was updated on October 25, 2026 and PROG_CALC on November 3, 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.*