# Undiet vs SimpleRX

The clearest difference is iOS requirement: Undiet at 15.1 against SimpleRX's 26.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Undiet sells 2 in-app purchases, starting at $5.99 per month and SimpleRX sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Undiet ships an update weekly, SimpleRX every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Undiet | SimpleRX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simplerx-medication-tracker/id6784418806/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | — | Free |
| Size | 43 MB | 13 MB |
| Requires iOS | **15.1** | 26.5 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Krnic](https://appshunter.io/developer/1803578555) | [Luke Heyne](https://appshunter.io/developer/6782407650) |

## What reviewers say

### Undiet

[App page](https://appshunter.io/ios/app/undiet-weight-journey-tracker/id1490849895)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Undiet Plus Monthly | $5.99 | per month |
| Undiet Plus Yearly | $34.99 | per year |


### SimpleRX

[App page](https://appshunter.io/ios/app/simplerx-medication-tracker/id6784418806)

This app helps users manage their medications with automatic reminders and refill alerts. It also offers features for caregivers to monitor adherence and provides crucial medical information for emergencies.

**Highlights:** Medication tracking and reminders, Barcode scanning for prescriptions, Refill alerts, Caregiver monitoring, Drug interaction checker, Medical ID card, Printable EMS Quick Reference Card

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock SimpleRX | $2.99 | one-time |


## Frequently asked questions

### Is Undiet free?

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

### Is SimpleRX free?

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

### Do Undiet or SimpleRX have ads?

Neither Undiet nor SimpleRX shows ads.

### Which is updated more often, Undiet or SimpleRX?

Undiet ships an update weekly, and SimpleRX every 5 days. Most recently, Undiet was updated on November 3, 2026 and SimpleRX on October 31, 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.*