# Weight Diary vs Kilo

The clearest difference is in-app purchases: Kilo at none against Weight Diary's 1. Kilo also leads on update cadence (weekly vs every 5 months). Weight Diary's advantage is iOS requirement (15.6 vs 26.1). On price, ads and device support there is nothing between them.

Both are free to download. Weight Diary sells 1 in-app purchase, starting at $0.99 per month. Kilo asks for nothing beyond the download.

Weight Diary ships an update every 5 months, Kilo weekly. The most recent releases landed on September 13, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Weight Diary | Kilo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Size | 24 MB | 15 MB |
| Requires iOS | **15.6** | 26.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Juno Kim](https://appshunter.io/developer/1790513505) | [Jinhyeong Kim](https://appshunter.io/developer/1845287283) |

## What reviewers say

### Weight Diary

[App page](https://appshunter.io/ios/app/weight-diary-weight-tracker/id6740751760)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |


### Kilo

[App page](https://appshunter.io/ios/app/kilo/id6760478157)

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

**In-app purchases:** none


## Frequently asked questions

### Is Weight Diary free?

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

### Is Kilo free?

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

### Do Weight Diary or Kilo have ads?

Neither Weight Diary nor Kilo shows ads.

### Which is updated more often, Weight Diary or Kilo?

Weight Diary ships an update every 5 months, and Kilo weekly. Most recently, Weight Diary was updated on September 13, 2026 and Kilo on September 7, 2026.

---

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