# CS Programmer vs Lumi

The clearest difference is in-app purchases: CS Programmer at none against Lumi's 1. CS Programmer also leads on update cadence (every 5 weeks vs every 54 months) and iOS requirement (14.7 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. Lumi sells 1 one-off in-app purchase. CS Programmer asks for nothing beyond the download.

CS Programmer ships an update every 5 weeks, Lumi every 54 months. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | CS Programmer | Lumi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 54 months |
| Size | 23 MB | 2 MB |
| Requires iOS | **14.7** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Control Solutions](https://appshunter.io/developer/1185981343) | [Kazumasa Matsushita](https://appshunter.io/developer/1569771331) |

## What reviewers say

### CS Programmer

[App page](https://appshunter.io/ios/app/cs-programmer/id1520073880)

**Features:** Vision Pro support

**In-app purchases:** none


### Lumi

[App page](https://appshunter.io/ios/app/lumi-det/id1569771329)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support max 10 devices | $2.99 | one-time |


## Frequently asked questions

### Is CS Programmer free?

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

### Is Lumi free?

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

### Do CS Programmer or Lumi have ads?

Neither CS Programmer nor Lumi shows ads.

### Which is updated more often, CS Programmer or Lumi?

CS Programmer ships an update every 5 weeks, and Lumi every 54 months. Most recently, CS Programmer was updated on October 6, 2026 and Lumi on October 11, 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.*