# 1Kilo vs RJSC

1Kilo and RJSC are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

1Kilo ships an update every 7 months, RJSC every 4 months. The most recent releases landed on November 9, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | 1Kilo | RJSC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Size | 40 MB | 43 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WTF Enterprises LLC](https://appshunter.io/developer/1888576014) | [RJSC, LLC](https://appshunter.io/developer/6788862099) |

## What reviewers say

### 1Kilo

[App page](https://appshunter.io/ios/app/1kilo/id6761279538)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### RJSC

[App page](https://appshunter.io/ios/app/rjsc/id6788862097)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 1Kilo free?

1Kilo is free to download, with no in-app purchases.

### Is RJSC free?

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

### Do 1Kilo or RJSC have ads?

Neither 1Kilo nor RJSC shows ads.

### Which is updated more often, 1Kilo or RJSC?

1Kilo ships an update every 7 months, and RJSC every 4 months. Most recently, 1Kilo was updated on November 9, 2026 and RJSC on November 13, 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.*